/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 15:59:53,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 15:59:53,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 15:59:53,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 15:59:53,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 15:59:53,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 15:59:53,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 15:59:53,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-08 15:59:53,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 15:59:53,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 15:59:53,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 15:59:53,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 15:59:53,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 15:59:53,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 15:59:53,819 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 15:59:53,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 15:59:53,819 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 15:59:53,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 15:59:53,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 15:59:53,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 15:59:53,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 15:59:53,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 15:59:53,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 15:59:53,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 15:59:53,822 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 15:59:53,822 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 15:59:53,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 15:59:53,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 15:59:53,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 15:59:53,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 15:59:53,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 15:59:53,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 15:59:53,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:59:53,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 15:59:53,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 15:59:53,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 15:59:53,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 15:59:53,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 15:59:53,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 15:59:53,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 15:59:53,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 15:59:54,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 15:59:54,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 15:59:54,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 15:59:54,312 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 15:59:54,315 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 15:59:54,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-10-08 15:59:54,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f568e01db/5aa44ec23a88429fba910226b1811572/FLAG250fa4598 [2021-10-08 15:59:55,034 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 15:59:55,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-10-08 15:59:55,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f568e01db/5aa44ec23a88429fba910226b1811572/FLAG250fa4598 [2021-10-08 15:59:55,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f568e01db/5aa44ec23a88429fba910226b1811572 [2021-10-08 15:59:55,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 15:59:55,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 15:59:55,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 15:59:55,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 15:59:55,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 15:59:55,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588d90e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55, skipping insertion in model container [2021-10-08 15:59:55,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 15:59:55,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 15:59:55,777 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2139,2152] [2021-10-08 15:59:55,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:59:55,820 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 15:59:55,843 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2139,2152] [2021-10-08 15:59:55,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 15:59:55,880 INFO L208 MainTranslator]: Completed translation [2021-10-08 15:59:55,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55 WrapperNode [2021-10-08 15:59:55,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 15:59:55,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 15:59:55,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 15:59:55,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 15:59:55,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 15:59:55,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 15:59:55,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 15:59:55,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 15:59:55,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:55,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:56,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 15:59:56,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 15:59:56,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 15:59:56,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 15:59:56,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (1/1) ... [2021-10-08 15:59:56,019 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 15:59:56,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 15:59:56,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 15:59:56,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 15:59:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 15:59:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 15:59:56,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 15:59:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 15:59:56,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 15:59:56,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 15:59:56,142 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 15:59:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 15:59:56,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 15:59:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 15:59:56,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 15:59:56,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 15:59:56,146 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 15:59:56,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 15:59:56,820 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-08 15:59:56,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:59:56 BoogieIcfgContainer [2021-10-08 15:59:56,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 15:59:56,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 15:59:56,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 15:59:56,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 15:59:56,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 03:59:55" (1/3) ... [2021-10-08 15:59:56,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3764535d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:59:56, skipping insertion in model container [2021-10-08 15:59:56,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 03:59:55" (2/3) ... [2021-10-08 15:59:56,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3764535d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 03:59:56, skipping insertion in model container [2021-10-08 15:59:56,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 03:59:56" (3/3) ... [2021-10-08 15:59:56,835 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2021-10-08 15:59:56,843 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 15:59:56,843 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 15:59:56,843 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-08 15:59:56,843 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 15:59:56,893 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,894 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,895 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,895 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,896 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,896 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,897 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,897 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,897 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,897 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,898 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,898 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,898 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,898 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,900 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,901 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,901 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,901 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,902 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,902 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,902 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,902 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,902 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,903 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,903 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,903 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,903 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,903 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,904 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,904 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,904 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,904 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,904 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,906 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,906 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,906 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,907 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,907 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,907 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,908 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,908 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,909 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,909 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,909 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,909 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,910 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,910 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,910 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,910 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,911 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,911 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,912 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,912 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,912 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,913 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,913 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,913 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,913 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,914 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,914 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,914 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,914 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,914 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,915 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,915 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,915 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,915 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,916 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,916 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,916 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,917 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,920 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,920 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,921 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,921 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,921 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,921 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,922 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,922 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,925 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,925 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,926 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,926 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,926 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,926 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,927 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,930 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,930 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,931 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,931 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,931 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,931 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,931 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,932 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,932 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,932 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,932 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,932 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,933 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,933 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,933 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,933 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,934 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,934 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,934 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,934 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,934 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,935 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,940 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,941 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,946 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,946 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,950 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,951 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,951 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,952 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,952 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,958 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,958 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,958 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,958 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,959 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,959 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,966 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,966 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,967 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,967 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,967 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,968 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,969 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,973 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,973 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,974 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,975 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,977 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,978 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,978 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,978 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,979 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,979 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,979 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,979 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,980 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,982 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,982 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,982 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,983 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,983 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,983 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,983 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,984 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,987 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,988 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,989 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,992 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,993 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,993 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,993 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,993 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,993 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,994 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,994 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,994 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,994 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,995 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,996 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,996 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,996 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,997 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:56,997 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,000 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,000 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,001 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,001 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,001 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,001 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,002 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,002 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,002 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,003 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,003 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,003 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,003 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,004 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,005 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,008 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,008 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,009 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,009 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,009 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,009 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,010 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,010 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,010 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,010 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,011 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,017 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,017 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,018 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,018 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,018 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,018 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,018 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,019 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,019 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,019 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,019 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,020 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,020 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,020 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,020 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,021 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,021 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,021 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,021 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,021 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,022 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,022 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,025 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,026 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,026 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,026 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,026 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,026 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,027 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,027 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,027 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,027 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,027 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,028 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,028 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,028 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,028 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,030 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,032 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,032 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,032 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,032 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,035 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,035 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,035 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,035 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,035 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,039 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,040 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,040 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,040 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,041 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,041 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,041 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,041 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,041 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,042 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,042 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,042 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#t~short22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,042 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,042 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,043 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,048 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,048 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,049 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,049 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,049 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,049 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,050 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,050 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,051 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,051 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#t~short21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 15:59:57,059 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 15:59:57,136 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 15:59:57,151 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 15:59:57,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-08 15:59:57,180 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 15:59:57,194 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 206 transitions, 428 flow [2021-10-08 15:59:57,198 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 206 transitions, 428 flow [2021-10-08 15:59:57,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 196 places, 206 transitions, 428 flow [2021-10-08 15:59:57,374 INFO L129 PetriNetUnfolder]: 17/204 cut-off events. [2021-10-08 15:59:57,374 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 15:59:57,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 204 events. 17/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 405 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2021-10-08 15:59:57,401 INFO L116 LiptonReduction]: Number of co-enabled transitions 8732 [2021-10-08 16:00:09,318 INFO L131 LiptonReduction]: Checked pairs total: 10594 [2021-10-08 16:00:09,318 INFO L133 LiptonReduction]: Total number of compositions: 258 [2021-10-08 16:00:09,330 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 40 transitions, 96 flow [2021-10-08 16:00:09,364 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 363 states, 281 states have (on average 3.1209964412811386) internal successors, (877), 362 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 281 states have (on average 3.1209964412811386) internal successors, (877), 362 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:00:09,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:09,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:00:09,377 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash 28604, now seen corresponding path program 1 times [2021-10-08 16:00:09,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:09,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004118304] [2021-10-08 16:00:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:09,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:09,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:09,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004118304] [2021-10-08 16:00:09,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004118304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:09,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:09,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:00:09,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630606860] [2021-10-08 16:00:09,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:09,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:09,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:09,623 INFO L87 Difference]: Start difference. First operand has 363 states, 281 states have (on average 3.1209964412811386) internal successors, (877), 362 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:09,711 INFO L93 Difference]: Finished difference Result 523 states and 1259 transitions. [2021-10-08 16:00:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:09,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:00:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:09,744 INFO L225 Difference]: With dead ends: 523 [2021-10-08 16:00:09,744 INFO L226 Difference]: Without dead ends: 523 [2021-10-08 16:00:09,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-10-08 16:00:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 264. [2021-10-08 16:00:09,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 214 states have (on average 2.957943925233645) internal successors, (633), 263 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 633 transitions. [2021-10-08 16:00:09,844 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 633 transitions. Word has length 2 [2021-10-08 16:00:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:09,845 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 633 transitions. [2021-10-08 16:00:09,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 633 transitions. [2021-10-08 16:00:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:00:09,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:09,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:00:09,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:00:09,847 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:09,848 INFO L82 PathProgramCache]: Analyzing trace with hash 887583, now seen corresponding path program 1 times [2021-10-08 16:00:09,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:09,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546257053] [2021-10-08 16:00:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:09,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:09,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:09,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546257053] [2021-10-08 16:00:09,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546257053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:09,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273260748] [2021-10-08 16:00:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:09,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:09,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:09,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:09,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 16:00:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:10,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:00:10,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:10,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273260748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:10,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:10,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-08 16:00:10,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719283904] [2021-10-08 16:00:10,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:10,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:10,071 INFO L87 Difference]: Start difference. First operand 264 states and 633 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:10,098 INFO L93 Difference]: Finished difference Result 522 states and 1258 transitions. [2021-10-08 16:00:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:00:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:10,103 INFO L225 Difference]: With dead ends: 522 [2021-10-08 16:00:10,103 INFO L226 Difference]: Without dead ends: 522 [2021-10-08 16:00:10,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-10-08 16:00:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 263. [2021-10-08 16:00:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 214 states have (on average 2.953271028037383) internal successors, (632), 262 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 632 transitions. [2021-10-08 16:00:10,121 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 632 transitions. Word has length 3 [2021-10-08 16:00:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:10,122 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 632 transitions. [2021-10-08 16:00:10,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,122 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 632 transitions. [2021-10-08 16:00:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 16:00:10,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:10,123 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 16:00:10,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:10,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:10,337 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:10,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash 887553, now seen corresponding path program 1 times [2021-10-08 16:00:10,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:10,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884366423] [2021-10-08 16:00:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:10,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:10,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:10,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884366423] [2021-10-08 16:00:10,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884366423] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:10,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101737013] [2021-10-08 16:00:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:10,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:10,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:10,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:10,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-08 16:00:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:00:10,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:10,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101737013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:10,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:10,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:00:10,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284115737] [2021-10-08 16:00:10,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:00:10,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:00:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:10,477 INFO L87 Difference]: Start difference. First operand 263 states and 632 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:10,509 INFO L93 Difference]: Finished difference Result 782 states and 1886 transitions. [2021-10-08 16:00:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:10,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 16:00:10,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:10,516 INFO L225 Difference]: With dead ends: 782 [2021-10-08 16:00:10,517 INFO L226 Difference]: Without dead ends: 782 [2021-10-08 16:00:10,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-10-08 16:00:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 264. [2021-10-08 16:00:10,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 215 states have (on average 2.9488372093023254) internal successors, (634), 263 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 634 transitions. [2021-10-08 16:00:10,534 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 634 transitions. Word has length 3 [2021-10-08 16:00:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:10,535 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 634 transitions. [2021-10-08 16:00:10,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 634 transitions. [2021-10-08 16:00:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:00:10,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:10,536 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:00:10,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:10,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:10,751 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash 27515902, now seen corresponding path program 2 times [2021-10-08 16:00:10,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:10,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49043733] [2021-10-08 16:00:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:10,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:10,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:10,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49043733] [2021-10-08 16:00:10,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49043733] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:10,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085223432] [2021-10-08 16:00:10,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:10,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:10,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:10,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-08 16:00:10,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:00:10,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:10,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:00:10,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:00:10,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085223432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:10,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:00:10,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-08 16:00:10,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209591410] [2021-10-08 16:00:10,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:10,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:00:10,924 INFO L87 Difference]: Start difference. First operand 264 states and 634 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:10,931 INFO L93 Difference]: Finished difference Result 263 states and 633 transitions. [2021-10-08 16:00:10,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:10,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 16:00:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:10,934 INFO L225 Difference]: With dead ends: 263 [2021-10-08 16:00:10,934 INFO L226 Difference]: Without dead ends: 263 [2021-10-08 16:00:10,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:00:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-08 16:00:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2021-10-08 16:00:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 213 states have (on average 2.9530516431924885) internal successors, (629), 260 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 629 transitions. [2021-10-08 16:00:10,945 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 629 transitions. Word has length 4 [2021-10-08 16:00:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:10,945 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 629 transitions. [2021-10-08 16:00:10,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:10,946 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 629 transitions. [2021-10-08 16:00:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:00:10,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:10,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:00:10,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:11,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:11,161 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash 851873173, now seen corresponding path program 1 times [2021-10-08 16:00:11,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:11,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257747006] [2021-10-08 16:00:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:11,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:11,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:11,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257747006] [2021-10-08 16:00:11,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257747006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:11,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:11,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:00:11,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329834388] [2021-10-08 16:00:11,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:11,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:11,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:11,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:11,250 INFO L87 Difference]: Start difference. First operand 261 states and 629 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:11,310 INFO L93 Difference]: Finished difference Result 363 states and 933 transitions. [2021-10-08 16:00:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:11,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:00:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:11,314 INFO L225 Difference]: With dead ends: 363 [2021-10-08 16:00:11,315 INFO L226 Difference]: Without dead ends: 363 [2021-10-08 16:00:11,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:11,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-10-08 16:00:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 319. [2021-10-08 16:00:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 271 states have (on average 3.040590405904059) internal successors, (824), 318 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 824 transitions. [2021-10-08 16:00:11,329 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 824 transitions. Word has length 5 [2021-10-08 16:00:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:11,329 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 824 transitions. [2021-10-08 16:00:11,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 824 transitions. [2021-10-08 16:00:11,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:00:11,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:11,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:00:11,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 16:00:11,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:11,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:11,331 INFO L82 PathProgramCache]: Analyzing trace with hash 638257671, now seen corresponding path program 1 times [2021-10-08 16:00:11,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:11,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983450] [2021-10-08 16:00:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:11,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:11,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:11,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983450] [2021-10-08 16:00:11,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983450] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:11,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:11,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:00:11,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787077783] [2021-10-08 16:00:11,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:00:11,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:11,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:00:11,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:11,390 INFO L87 Difference]: Start difference. First operand 319 states and 824 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:11,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:11,494 INFO L93 Difference]: Finished difference Result 427 states and 1069 transitions. [2021-10-08 16:00:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:00:11,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:00:11,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:11,499 INFO L225 Difference]: With dead ends: 427 [2021-10-08 16:00:11,500 INFO L226 Difference]: Without dead ends: 419 [2021-10-08 16:00:11,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:00:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-10-08 16:00:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 365. [2021-10-08 16:00:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 317 states have (on average 2.9747634069400632) internal successors, (943), 364 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 943 transitions. [2021-10-08 16:00:11,516 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 943 transitions. Word has length 6 [2021-10-08 16:00:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:11,517 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 943 transitions. [2021-10-08 16:00:11,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 943 transitions. [2021-10-08 16:00:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:00:11,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:11,518 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:11,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 16:00:11,518 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:11,519 INFO L82 PathProgramCache]: Analyzing trace with hash -645547030, now seen corresponding path program 1 times [2021-10-08 16:00:11,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:11,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689050646] [2021-10-08 16:00:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:11,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:11,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:11,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689050646] [2021-10-08 16:00:11,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689050646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:11,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655383759] [2021-10-08 16:00:11,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:11,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:11,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:11,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:11,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-08 16:00:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:11,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:00:11,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:11,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:00:11,869 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:11,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:00:11,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-10-08 16:00:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:11,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655383759] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:11,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:11,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:00:11,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724281378] [2021-10-08 16:00:11,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:00:11,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:00:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:00:11,929 INFO L87 Difference]: Start difference. First operand 365 states and 943 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:12,297 INFO L93 Difference]: Finished difference Result 452 states and 1214 transitions. [2021-10-08 16:00:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:00:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:00:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:12,302 INFO L225 Difference]: With dead ends: 452 [2021-10-08 16:00:12,302 INFO L226 Difference]: Without dead ends: 452 [2021-10-08 16:00:12,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 238.1ms TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:00:12,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-08 16:00:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 387. [2021-10-08 16:00:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 339 states have (on average 3.023598820058997) internal successors, (1025), 386 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1025 transitions. [2021-10-08 16:00:12,322 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1025 transitions. Word has length 7 [2021-10-08 16:00:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:12,322 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 1025 transitions. [2021-10-08 16:00:12,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1025 transitions. [2021-10-08 16:00:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:00:12,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:12,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:12,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:12,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:12,539 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:12,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash -645546959, now seen corresponding path program 1 times [2021-10-08 16:00:12,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:12,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012560788] [2021-10-08 16:00:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:12,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:12,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:12,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012560788] [2021-10-08 16:00:12,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012560788] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:12,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534122956] [2021-10-08 16:00:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:12,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:12,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:12,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-08 16:00:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:12,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:00:12,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:12,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:00:12,825 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:12,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:00:12,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-08 16:00:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:12,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534122956] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:12,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:12,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:00:12,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719040684] [2021-10-08 16:00:12,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:00:12,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:00:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:00:12,876 INFO L87 Difference]: Start difference. First operand 387 states and 1025 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:13,247 INFO L93 Difference]: Finished difference Result 451 states and 1189 transitions. [2021-10-08 16:00:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:00:13,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:00:13,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:13,253 INFO L225 Difference]: With dead ends: 451 [2021-10-08 16:00:13,253 INFO L226 Difference]: Without dead ends: 451 [2021-10-08 16:00:13,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 227.8ms TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:00:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-10-08 16:00:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 386. [2021-10-08 16:00:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 338 states have (on average 2.9585798816568047) internal successors, (1000), 385 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1000 transitions. [2021-10-08 16:00:13,269 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1000 transitions. Word has length 7 [2021-10-08 16:00:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:13,269 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1000 transitions. [2021-10-08 16:00:13,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1000 transitions. [2021-10-08 16:00:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:00:13,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:13,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:13,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:13,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:13,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:13,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1679657226, now seen corresponding path program 1 times [2021-10-08 16:00:13,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:13,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916685530] [2021-10-08 16:00:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:13,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:13,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:13,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916685530] [2021-10-08 16:00:13,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916685530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:13,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:13,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:00:13,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036348297] [2021-10-08 16:00:13,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:00:13,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:13,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:00:13,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:13,596 INFO L87 Difference]: Start difference. First operand 386 states and 1000 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:13,658 INFO L93 Difference]: Finished difference Result 364 states and 920 transitions. [2021-10-08 16:00:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:00:13,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:00:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:13,663 INFO L225 Difference]: With dead ends: 364 [2021-10-08 16:00:13,663 INFO L226 Difference]: Without dead ends: 341 [2021-10-08 16:00:13,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:00:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-08 16:00:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-10-08 16:00:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 293 states have (on average 3.0102389078498293) internal successors, (882), 340 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 882 transitions. [2021-10-08 16:00:13,679 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 882 transitions. Word has length 7 [2021-10-08 16:00:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:13,679 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 882 transitions. [2021-10-08 16:00:13,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 882 transitions. [2021-10-08 16:00:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:00:13,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:13,681 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:13,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 16:00:13,681 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:13,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:13,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1463047373, now seen corresponding path program 1 times [2021-10-08 16:00:13,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:13,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326633113] [2021-10-08 16:00:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:13,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:13,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:13,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326633113] [2021-10-08 16:00:13,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326633113] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:13,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746162] [2021-10-08 16:00:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:13,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:13,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:13,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:13,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-08 16:00:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:13,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:00:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:13,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:13,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 152 [2021-10-08 16:00:14,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:00:14,057 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:14,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:00:14,126 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:14,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:00:14,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-10-08 16:00:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:14,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:14,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:14,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:00:14,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346084093] [2021-10-08 16:00:14,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:00:14,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:00:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:00:14,161 INFO L87 Difference]: Start difference. First operand 341 states and 882 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:14,560 INFO L93 Difference]: Finished difference Result 476 states and 1196 transitions. [2021-10-08 16:00:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:00:14,560 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:00:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:14,565 INFO L225 Difference]: With dead ends: 476 [2021-10-08 16:00:14,565 INFO L226 Difference]: Without dead ends: 476 [2021-10-08 16:00:14,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 295.1ms TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-08 16:00:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 390. [2021-10-08 16:00:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 342 states have (on average 3.0964912280701755) internal successors, (1059), 389 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1059 transitions. [2021-10-08 16:00:14,581 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1059 transitions. Word has length 8 [2021-10-08 16:00:14,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:14,581 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 1059 transitions. [2021-10-08 16:00:14,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1059 transitions. [2021-10-08 16:00:14,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:00:14,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:14,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:14,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:14,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-08 16:00:14,796 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:14,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:14,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1463047444, now seen corresponding path program 1 times [2021-10-08 16:00:14,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:14,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873700485] [2021-10-08 16:00:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:14,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:14,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:14,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873700485] [2021-10-08 16:00:14,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873700485] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:14,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150607539] [2021-10-08 16:00:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:14,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:14,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:14,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:14,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-08 16:00:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:15,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:00:15,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:15,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:15,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:00:15,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:00:15,141 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:15,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:00:15,204 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:15,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:00:15,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-08 16:00:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:15,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150607539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:15,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:15,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:00:15,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920440751] [2021-10-08 16:00:15,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:00:15,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:00:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:00:15,236 INFO L87 Difference]: Start difference. First operand 390 states and 1059 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:15,613 INFO L93 Difference]: Finished difference Result 453 states and 1133 transitions. [2021-10-08 16:00:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:00:15,614 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:00:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:15,618 INFO L225 Difference]: With dead ends: 453 [2021-10-08 16:00:15,618 INFO L226 Difference]: Without dead ends: 453 [2021-10-08 16:00:15,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 274.5ms TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-10-08 16:00:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 362. [2021-10-08 16:00:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 314 states have (on average 3.0573248407643314) internal successors, (960), 361 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 960 transitions. [2021-10-08 16:00:15,655 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 960 transitions. Word has length 8 [2021-10-08 16:00:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:15,655 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 960 transitions. [2021-10-08 16:00:15,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 960 transitions. [2021-10-08 16:00:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:00:15,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:15,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:15,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:15,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:15,869 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:15,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1472070003, now seen corresponding path program 1 times [2021-10-08 16:00:15,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:15,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896529538] [2021-10-08 16:00:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:15,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:15,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:15,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896529538] [2021-10-08 16:00:15,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896529538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:15,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096833555] [2021-10-08 16:00:15,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:15,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:15,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:15,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:15,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-08 16:00:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:16,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:00:16,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:16,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:16,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:00:16,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-08 16:00:16,185 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:16,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:00:16,221 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:16,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:00:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:16,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096833555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:16,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:16,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:00:16,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955018664] [2021-10-08 16:00:16,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:00:16,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:16,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:00:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:00:16,256 INFO L87 Difference]: Start difference. First operand 362 states and 960 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:16,494 INFO L93 Difference]: Finished difference Result 498 states and 1269 transitions. [2021-10-08 16:00:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:00:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:00:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:16,500 INFO L225 Difference]: With dead ends: 498 [2021-10-08 16:00:16,500 INFO L226 Difference]: Without dead ends: 498 [2021-10-08 16:00:16,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 190.6ms TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:00:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-08 16:00:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 406. [2021-10-08 16:00:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 358 states have (on average 3.1675977653631286) internal successors, (1134), 405 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:16,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1134 transitions. [2021-10-08 16:00:16,516 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1134 transitions. Word has length 8 [2021-10-08 16:00:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:16,517 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 1134 transitions. [2021-10-08 16:00:16,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1134 transitions. [2021-10-08 16:00:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:00:16,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:16,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:16,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:16,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-08 16:00:16,734 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:16,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1472070035, now seen corresponding path program 1 times [2021-10-08 16:00:16,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:16,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330806138] [2021-10-08 16:00:16,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:16,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:16,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:16,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330806138] [2021-10-08 16:00:16,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330806138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:16,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001018463] [2021-10-08 16:00:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:16,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:16,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:16,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:16,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 16:00:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:16,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:00:16,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:16,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:16,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2021-10-08 16:00:17,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:00:17,054 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:17,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:00:17,092 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:17,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:00:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:17,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001018463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:17,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:17,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:00:17,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479650397] [2021-10-08 16:00:17,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:00:17,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:00:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:00:17,129 INFO L87 Difference]: Start difference. First operand 406 states and 1134 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:17,365 INFO L93 Difference]: Finished difference Result 468 states and 1189 transitions. [2021-10-08 16:00:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:00:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:00:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:17,374 INFO L225 Difference]: With dead ends: 468 [2021-10-08 16:00:17,374 INFO L226 Difference]: Without dead ends: 468 [2021-10-08 16:00:17,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 193.3ms TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:00:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-08 16:00:17,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 402. [2021-10-08 16:00:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 354 states have (on average 3.0847457627118646) internal successors, (1092), 401 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1092 transitions. [2021-10-08 16:00:17,393 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1092 transitions. Word has length 8 [2021-10-08 16:00:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:17,393 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1092 transitions. [2021-10-08 16:00:17,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1092 transitions. [2021-10-08 16:00:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:00:17,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:17,397 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:17,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:17,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:17,612 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1895299379, now seen corresponding path program 1 times [2021-10-08 16:00:17,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:17,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881395646] [2021-10-08 16:00:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:17,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:17,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:17,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881395646] [2021-10-08 16:00:17,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881395646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:17,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872332985] [2021-10-08 16:00:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:17,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:17,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:17,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:17,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 16:00:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:17,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:00:17,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:17,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872332985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:17,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:17,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:00:17,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680043188] [2021-10-08 16:00:17,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:00:17,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:00:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:00:17,906 INFO L87 Difference]: Start difference. First operand 402 states and 1092 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:18,179 INFO L93 Difference]: Finished difference Result 666 states and 1713 transitions. [2021-10-08 16:00:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:00:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:00:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:18,185 INFO L225 Difference]: With dead ends: 666 [2021-10-08 16:00:18,185 INFO L226 Difference]: Without dead ends: 656 [2021-10-08 16:00:18,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 89.4ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-10-08 16:00:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 528. [2021-10-08 16:00:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 480 states have (on average 3.0458333333333334) internal successors, (1462), 527 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1462 transitions. [2021-10-08 16:00:18,207 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1462 transitions. Word has length 9 [2021-10-08 16:00:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:18,208 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1462 transitions. [2021-10-08 16:00:18,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1462 transitions. [2021-10-08 16:00:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:00:18,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:18,209 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:18,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:18,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-08 16:00:18,423 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:18,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1037375990, now seen corresponding path program 2 times [2021-10-08 16:00:18,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:18,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219300104] [2021-10-08 16:00:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:18,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:00:18,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:18,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219300104] [2021-10-08 16:00:18,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219300104] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:18,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:18,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:00:18,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565765315] [2021-10-08 16:00:18,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:00:18,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:18,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:00:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:18,457 INFO L87 Difference]: Start difference. First operand 528 states and 1462 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:18,485 INFO L93 Difference]: Finished difference Result 464 states and 1232 transitions. [2021-10-08 16:00:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:00:18,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:00:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:18,490 INFO L225 Difference]: With dead ends: 464 [2021-10-08 16:00:18,491 INFO L226 Difference]: Without dead ends: 464 [2021-10-08 16:00:18,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:00:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-08 16:00:18,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-10-08 16:00:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 429 states have (on average 2.871794871794872) internal successors, (1232), 463 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1232 transitions. [2021-10-08 16:00:18,509 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1232 transitions. Word has length 10 [2021-10-08 16:00:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:18,509 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1232 transitions. [2021-10-08 16:00:18,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1232 transitions. [2021-10-08 16:00:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:00:18,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:18,510 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:18,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 16:00:18,511 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:18,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:18,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1037375989, now seen corresponding path program 1 times [2021-10-08 16:00:18,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:18,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728964185] [2021-10-08 16:00:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:18,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:00:18,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:18,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728964185] [2021-10-08 16:00:18,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728964185] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:00:18,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:00:18,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-08 16:00:18,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771750949] [2021-10-08 16:00:18,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:00:18,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:18,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:00:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:00:18,550 INFO L87 Difference]: Start difference. First operand 464 states and 1232 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:18,593 INFO L93 Difference]: Finished difference Result 432 states and 1073 transitions. [2021-10-08 16:00:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:00:18,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:00:18,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:18,598 INFO L225 Difference]: With dead ends: 432 [2021-10-08 16:00:18,598 INFO L226 Difference]: Without dead ends: 428 [2021-10-08 16:00:18,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:00:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-08 16:00:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 386. [2021-10-08 16:00:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 362 states have (on average 2.74585635359116) internal successors, (994), 385 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 994 transitions. [2021-10-08 16:00:18,618 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 994 transitions. Word has length 10 [2021-10-08 16:00:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:18,618 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 994 transitions. [2021-10-08 16:00:18,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 994 transitions. [2021-10-08 16:00:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:00:18,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:18,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:18,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-08 16:00:18,623 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:18,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1615088159, now seen corresponding path program 1 times [2021-10-08 16:00:18,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:18,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042159295] [2021-10-08 16:00:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:18,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:18,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:18,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042159295] [2021-10-08 16:00:18,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042159295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:18,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324332357] [2021-10-08 16:00:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:18,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:18,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:18,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:18,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-08 16:00:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:18,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:00:18,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:18,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324332357] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:18,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:18,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:00:18,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270196600] [2021-10-08 16:00:18,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:00:18,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:18,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:00:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:00:18,896 INFO L87 Difference]: Start difference. First operand 386 states and 994 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:18,999 INFO L93 Difference]: Finished difference Result 354 states and 875 transitions. [2021-10-08 16:00:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:00:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:00:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:19,003 INFO L225 Difference]: With dead ends: 354 [2021-10-08 16:00:19,004 INFO L226 Difference]: Without dead ends: 285 [2021-10-08 16:00:19,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-10-08 16:00:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-10-08 16:00:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 261 states have (on average 2.78544061302682) internal successors, (727), 284 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 727 transitions. [2021-10-08 16:00:19,016 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 727 transitions. Word has length 10 [2021-10-08 16:00:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:19,017 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 727 transitions. [2021-10-08 16:00:19,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:19,017 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 727 transitions. [2021-10-08 16:00:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:00:19,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:19,018 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:19,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:19,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:19,232 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2093891534, now seen corresponding path program 1 times [2021-10-08 16:00:19,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:19,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011904038] [2021-10-08 16:00:19,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:19,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:19,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:19,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011904038] [2021-10-08 16:00:19,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011904038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:19,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165489521] [2021-10-08 16:00:19,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:19,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:19,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:19,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:19,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-08 16:00:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:19,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:00:19,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:19,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:00:19,699 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:19,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:00:19,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-10-08 16:00:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:19,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165489521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:19,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:19,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-08 16:00:19,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343447152] [2021-10-08 16:00:19,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:00:19,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:00:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:00:19,767 INFO L87 Difference]: Start difference. First operand 285 states and 727 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:20,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:20,053 INFO L93 Difference]: Finished difference Result 333 states and 909 transitions. [2021-10-08 16:00:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:00:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:00:20,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:20,066 INFO L225 Difference]: With dead ends: 333 [2021-10-08 16:00:20,066 INFO L226 Difference]: Without dead ends: 333 [2021-10-08 16:00:20,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 191.9ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:00:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-10-08 16:00:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 309. [2021-10-08 16:00:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 285 states have (on average 2.8421052631578947) internal successors, (810), 308 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 810 transitions. [2021-10-08 16:00:20,078 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 810 transitions. Word has length 11 [2021-10-08 16:00:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:20,078 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 810 transitions. [2021-10-08 16:00:20,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 810 transitions. [2021-10-08 16:00:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:00:20,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:20,079 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:20,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:20,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 16:00:20,294 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:20,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2093891463, now seen corresponding path program 1 times [2021-10-08 16:00:20,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:20,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909000682] [2021-10-08 16:00:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:20,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:20,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:20,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909000682] [2021-10-08 16:00:20,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909000682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:20,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599754261] [2021-10-08 16:00:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:20,490 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:20,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:20,493 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:20,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-08 16:00:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:20,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:00:20,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:20,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:00:20,729 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:20,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:00:20,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-08 16:00:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:20,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599754261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:20,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:20,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-08 16:00:20,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172224473] [2021-10-08 16:00:20,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:00:20,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:00:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:00:20,795 INFO L87 Difference]: Start difference. First operand 309 states and 810 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:21,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:21,021 INFO L93 Difference]: Finished difference Result 332 states and 886 transitions. [2021-10-08 16:00:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:00:21,022 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:00:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:21,027 INFO L225 Difference]: With dead ends: 332 [2021-10-08 16:00:21,028 INFO L226 Difference]: Without dead ends: 332 [2021-10-08 16:00:21,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 194.7ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:00:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-08 16:00:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 309. [2021-10-08 16:00:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 285 states have (on average 2.7649122807017545) internal successors, (788), 308 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 788 transitions. [2021-10-08 16:00:21,040 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 788 transitions. Word has length 11 [2021-10-08 16:00:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:21,040 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 788 transitions. [2021-10-08 16:00:21,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 788 transitions. [2021-10-08 16:00:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:00:21,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:21,042 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:21,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:21,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:21,257 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:21,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1854057854, now seen corresponding path program 2 times [2021-10-08 16:00:21,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:21,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504793013] [2021-10-08 16:00:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:21,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:21,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:21,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504793013] [2021-10-08 16:00:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504793013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:21,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243884936] [2021-10-08 16:00:21,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:21,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:21,484 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:21,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-08 16:00:21,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:00:21,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:21,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:00:21,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:21,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:21,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 113 [2021-10-08 16:00:21,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:00:21,838 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:21,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:00:21,912 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:21,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:00:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:22,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243884936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:22,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:22,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 16:00:22,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104529281] [2021-10-08 16:00:22,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:00:22,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:00:22,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:00:22,079 INFO L87 Difference]: Start difference. First operand 309 states and 788 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:23,057 INFO L93 Difference]: Finished difference Result 739 states and 1864 transitions. [2021-10-08 16:00:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:00:23,058 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:00:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:23,064 INFO L225 Difference]: With dead ends: 739 [2021-10-08 16:00:23,064 INFO L226 Difference]: Without dead ends: 739 [2021-10-08 16:00:23,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 765.9ms TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:00:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2021-10-08 16:00:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 507. [2021-10-08 16:00:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 483 states have (on average 2.906832298136646) internal successors, (1404), 506 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1404 transitions. [2021-10-08 16:00:23,090 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1404 transitions. Word has length 11 [2021-10-08 16:00:23,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:23,091 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1404 transitions. [2021-10-08 16:00:23,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1404 transitions. [2021-10-08 16:00:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:00:23,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:23,092 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:23,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:23,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:23,307 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:23,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:23,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1854057822, now seen corresponding path program 1 times [2021-10-08 16:00:23,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:23,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862160880] [2021-10-08 16:00:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:23,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:23,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:23,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862160880] [2021-10-08 16:00:23,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862160880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:23,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873752802] [2021-10-08 16:00:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:23,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:23,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:23,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-08 16:00:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:23,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:00:23,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:23,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:23,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:00:23,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:00:23,785 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:23,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:00:23,822 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:23,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:00:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:23,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873752802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:23,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:23,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-08 16:00:23,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317521068] [2021-10-08 16:00:23,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:00:23,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:23,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:00:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:00:23,882 INFO L87 Difference]: Start difference. First operand 507 states and 1404 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:24,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:24,074 INFO L93 Difference]: Finished difference Result 639 states and 1685 transitions. [2021-10-08 16:00:24,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:00:24,075 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:00:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:24,081 INFO L225 Difference]: With dead ends: 639 [2021-10-08 16:00:24,081 INFO L226 Difference]: Without dead ends: 639 [2021-10-08 16:00:24,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 165.7ms TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:00:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-10-08 16:00:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2021-10-08 16:00:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 539 states have (on average 2.8608534322820036) internal successors, (1542), 562 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1542 transitions. [2021-10-08 16:00:24,103 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1542 transitions. Word has length 11 [2021-10-08 16:00:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:24,103 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 1542 transitions. [2021-10-08 16:00:24,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1542 transitions. [2021-10-08 16:00:24,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:00:24,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:24,104 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:24,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:24,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:24,320 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:24,321 INFO L82 PathProgramCache]: Analyzing trace with hash -486535891, now seen corresponding path program 1 times [2021-10-08 16:00:24,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:24,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044138547] [2021-10-08 16:00:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:24,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:24,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:24,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044138547] [2021-10-08 16:00:24,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044138547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:24,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251734748] [2021-10-08 16:00:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:24,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:24,492 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:24,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-08 16:00:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:24,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:00:24,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:24,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-10-08 16:00:24,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:00:24,848 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:24,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:00:24,930 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:24,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:00:24,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-10-08 16:00:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:24,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251734748] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:24,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:24,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-08 16:00:24,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534206139] [2021-10-08 16:00:24,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:00:24,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:00:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:00:24,971 INFO L87 Difference]: Start difference. First operand 563 states and 1542 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:25,355 INFO L93 Difference]: Finished difference Result 859 states and 2256 transitions. [2021-10-08 16:00:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:00:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:00:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:25,363 INFO L225 Difference]: With dead ends: 859 [2021-10-08 16:00:25,363 INFO L226 Difference]: Without dead ends: 859 [2021-10-08 16:00:25,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 261.0ms TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-10-08 16:00:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 677. [2021-10-08 16:00:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 653 states have (on average 2.9617151607963246) internal successors, (1934), 676 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1934 transitions. [2021-10-08 16:00:25,388 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1934 transitions. Word has length 12 [2021-10-08 16:00:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:25,389 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 1934 transitions. [2021-10-08 16:00:25,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1934 transitions. [2021-10-08 16:00:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:00:25,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:25,390 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:25,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:25,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-08 16:00:25,606 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash -486535820, now seen corresponding path program 1 times [2021-10-08 16:00:25,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:25,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317286324] [2021-10-08 16:00:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:25,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:25,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:25,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317286324] [2021-10-08 16:00:25,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317286324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:25,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724372669] [2021-10-08 16:00:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:25,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:25,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:25,788 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:25,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-08 16:00:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:25,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:00:25,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:25,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 160 [2021-10-08 16:00:26,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:00:26,104 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:26,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:00:26,164 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:00:26,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:00:26,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-10-08 16:00:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:26,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724372669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:26,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:26,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-10-08 16:00:26,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716355385] [2021-10-08 16:00:26,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:00:26,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:00:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:00:26,203 INFO L87 Difference]: Start difference. First operand 677 states and 1934 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:26,521 INFO L93 Difference]: Finished difference Result 821 states and 2150 transitions. [2021-10-08 16:00:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:00:26,522 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:00:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:26,529 INFO L225 Difference]: With dead ends: 821 [2021-10-08 16:00:26,529 INFO L226 Difference]: Without dead ends: 821 [2021-10-08 16:00:26,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:00:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-10-08 16:00:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 639. [2021-10-08 16:00:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 615 states have (on average 2.910569105691057) internal successors, (1790), 638 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1790 transitions. [2021-10-08 16:00:26,552 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1790 transitions. Word has length 12 [2021-10-08 16:00:26,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:26,553 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 1790 transitions. [2021-10-08 16:00:26,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1790 transitions. [2021-10-08 16:00:26,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:00:26,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:26,555 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:26,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:26,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:26,769 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:26,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:26,769 INFO L82 PathProgramCache]: Analyzing trace with hash 661885838, now seen corresponding path program 2 times [2021-10-08 16:00:26,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:26,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561879331] [2021-10-08 16:00:26,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:26,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:26,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:26,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561879331] [2021-10-08 16:00:26,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561879331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:26,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241800689] [2021-10-08 16:00:26,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:26,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:26,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:26,884 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:26,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-08 16:00:27,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:00:27,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:27,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:00:27,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:27,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241800689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:27,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:27,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 16:00:27,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098398712] [2021-10-08 16:00:27,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:27,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:27,202 INFO L87 Difference]: Start difference. First operand 639 states and 1790 transitions. Second operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:27,396 INFO L93 Difference]: Finished difference Result 723 states and 1852 transitions. [2021-10-08 16:00:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:00:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:00:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:27,402 INFO L225 Difference]: With dead ends: 723 [2021-10-08 16:00:27,403 INFO L226 Difference]: Without dead ends: 697 [2021-10-08 16:00:27,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:00:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-10-08 16:00:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 613. [2021-10-08 16:00:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 589 states have (on average 2.7911714770797964) internal successors, (1644), 612 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1644 transitions. [2021-10-08 16:00:27,424 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1644 transitions. Word has length 13 [2021-10-08 16:00:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:27,425 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 1644 transitions. [2021-10-08 16:00:27,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1644 transitions. [2021-10-08 16:00:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:27,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:27,426 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:27,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:27,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:27,641 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:27,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:27,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1131056171, now seen corresponding path program 3 times [2021-10-08 16:00:27,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:27,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755511855] [2021-10-08 16:00:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:27,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:27,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:27,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755511855] [2021-10-08 16:00:27,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755511855] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:27,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683418652] [2021-10-08 16:00:27,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:00:27,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:27,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:27,841 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:27,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-08 16:00:28,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:00:28,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:28,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:00:28,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:28,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:28,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-08 16:00:28,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:00:28,284 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:28,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:00:28,363 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:28,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:00:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:28,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683418652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:28,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:28,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 16:00:28,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380229253] [2021-10-08 16:00:28,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:00:28,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:00:28,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:00:28,602 INFO L87 Difference]: Start difference. First operand 613 states and 1644 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:30,296 INFO L93 Difference]: Finished difference Result 1373 states and 3497 transitions. [2021-10-08 16:00:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:00:30,297 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:30,308 INFO L225 Difference]: With dead ends: 1373 [2021-10-08 16:00:30,308 INFO L226 Difference]: Without dead ends: 1373 [2021-10-08 16:00:30,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1268.2ms TimeCoverageRelationStatistics Valid=222, Invalid=1184, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:00:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2021-10-08 16:00:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 901. [2021-10-08 16:00:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 877 states have (on average 2.945267958950969) internal successors, (2583), 900 states have internal predecessors, (2583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2583 transitions. [2021-10-08 16:00:30,358 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2583 transitions. Word has length 14 [2021-10-08 16:00:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:30,359 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 2583 transitions. [2021-10-08 16:00:30,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2583 transitions. [2021-10-08 16:00:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:30,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:30,361 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:30,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:30,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-08 16:00:30,575 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1131056203, now seen corresponding path program 3 times [2021-10-08 16:00:30,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:30,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826695398] [2021-10-08 16:00:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:30,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:30,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:30,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826695398] [2021-10-08 16:00:30,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826695398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:30,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930301818] [2021-10-08 16:00:30,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:00:30,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:30,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:30,814 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:30,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-08 16:00:31,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:00:31,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:31,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-08 16:00:31,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:31,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:00:31,204 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:31,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:00:31,273 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:31,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:00:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:31,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930301818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:31,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:31,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 16:00:31,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624931491] [2021-10-08 16:00:31,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:00:31,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:00:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:00:31,403 INFO L87 Difference]: Start difference. First operand 901 states and 2583 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:32,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:32,163 INFO L93 Difference]: Finished difference Result 1109 states and 2996 transitions. [2021-10-08 16:00:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:00:32,164 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:32,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:32,172 INFO L225 Difference]: With dead ends: 1109 [2021-10-08 16:00:32,172 INFO L226 Difference]: Without dead ends: 1109 [2021-10-08 16:00:32,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 646.0ms TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:00:32,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-10-08 16:00:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 997. [2021-10-08 16:00:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 973 states have (on average 2.906474820143885) internal successors, (2828), 996 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 2828 transitions. [2021-10-08 16:00:32,205 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 2828 transitions. Word has length 14 [2021-10-08 16:00:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:32,205 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 2828 transitions. [2021-10-08 16:00:32,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 2828 transitions. [2021-10-08 16:00:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:00:32,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:32,207 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-08 16:00:32,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:32,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-08 16:00:32,422 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:32,423 INFO L82 PathProgramCache]: Analyzing trace with hash 985591431, now seen corresponding path program 2 times [2021-10-08 16:00:32,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:32,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834159615] [2021-10-08 16:00:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:32,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:32,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:32,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834159615] [2021-10-08 16:00:32,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834159615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:32,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138154426] [2021-10-08 16:00:32,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:32,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:32,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:32,514 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:32,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-08 16:00:32,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:00:32,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:32,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:00:32,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:32,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138154426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:32,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:32,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 16:00:32,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738843677] [2021-10-08 16:00:32,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:00:32,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:32,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:00:32,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:00:32,864 INFO L87 Difference]: Start difference. First operand 997 states and 2828 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:32,994 INFO L93 Difference]: Finished difference Result 929 states and 2608 transitions. [2021-10-08 16:00:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:00:32,995 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:00:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:33,009 INFO L225 Difference]: With dead ends: 929 [2021-10-08 16:00:33,009 INFO L226 Difference]: Without dead ends: 800 [2021-10-08 16:00:33,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-10-08 16:00:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2021-10-08 16:00:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 776 states have (on average 2.9561855670103094) internal successors, (2294), 799 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 2294 transitions. [2021-10-08 16:00:33,033 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 2294 transitions. Word has length 14 [2021-10-08 16:00:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:33,034 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 2294 transitions. [2021-10-08 16:00:33,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 2294 transitions. [2021-10-08 16:00:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:00:33,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:33,035 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-10-08 16:00:33,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:33,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 16:00:33,250 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1649996438, now seen corresponding path program 3 times [2021-10-08 16:00:33,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:33,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723205526] [2021-10-08 16:00:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:33,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:33,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:33,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723205526] [2021-10-08 16:00:33,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723205526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:33,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59424979] [2021-10-08 16:00:33,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:00:33,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:33,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:33,444 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:33,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 16:00:33,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:00:33,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:33,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:00:33,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:33,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:00:33,875 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:33,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:00:34,165 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:00:34,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:00:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:34,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59424979] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:34,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:34,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 16:00:34,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671214394] [2021-10-08 16:00:34,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:00:34,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:34,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:00:34,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:34,172 INFO L87 Difference]: Start difference. First operand 800 states and 2294 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:35,427 INFO L93 Difference]: Finished difference Result 907 states and 2730 transitions. [2021-10-08 16:00:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:00:35,427 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:00:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:35,432 INFO L225 Difference]: With dead ends: 907 [2021-10-08 16:00:35,433 INFO L226 Difference]: Without dead ends: 907 [2021-10-08 16:00:35,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1024.5ms TimeCoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:00:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-10-08 16:00:35,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 848. [2021-10-08 16:00:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 824 states have (on average 3.0109223300970873) internal successors, (2481), 847 states have internal predecessors, (2481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 2481 transitions. [2021-10-08 16:00:35,460 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 2481 transitions. Word has length 15 [2021-10-08 16:00:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:35,461 INFO L470 AbstractCegarLoop]: Abstraction has 848 states and 2481 transitions. [2021-10-08 16:00:35,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:35,461 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 2481 transitions. [2021-10-08 16:00:35,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:00:35,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:35,463 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-10-08 16:00:35,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:35,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 16:00:35,678 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:35,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:35,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1649996367, now seen corresponding path program 2 times [2021-10-08 16:00:35,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:35,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463009336] [2021-10-08 16:00:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:35,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:35,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:35,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463009336] [2021-10-08 16:00:35,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463009336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:35,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749713351] [2021-10-08 16:00:35,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:35,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:35,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:35,838 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:35,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-08 16:00:36,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:00:36,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:36,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:00:36,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:36,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:00:36,223 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:36,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:00:36,535 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:00:36,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:00:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:36,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749713351] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:36,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:36,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 16:00:36,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991750059] [2021-10-08 16:00:36,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:00:36,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:00:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:36,542 INFO L87 Difference]: Start difference. First operand 848 states and 2481 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:37,687 INFO L93 Difference]: Finished difference Result 905 states and 2678 transitions. [2021-10-08 16:00:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:00:37,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:00:37,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:37,693 INFO L225 Difference]: With dead ends: 905 [2021-10-08 16:00:37,693 INFO L226 Difference]: Without dead ends: 905 [2021-10-08 16:00:37,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 928.2ms TimeCoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:00:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2021-10-08 16:00:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 847. [2021-10-08 16:00:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 823 states have (on average 2.9526123936816524) internal successors, (2430), 846 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2430 transitions. [2021-10-08 16:00:37,718 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2430 transitions. Word has length 15 [2021-10-08 16:00:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:37,719 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 2430 transitions. [2021-10-08 16:00:37,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:37,719 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2430 transitions. [2021-10-08 16:00:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:00:37,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:37,720 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:37,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:37,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 16:00:37,936 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:37,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:37,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1028323625, now seen corresponding path program 2 times [2021-10-08 16:00:37,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:37,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147336406] [2021-10-08 16:00:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:37,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:38,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:38,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147336406] [2021-10-08 16:00:38,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147336406] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:38,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179595521] [2021-10-08 16:00:38,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:38,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:38,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:38,145 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:38,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 16:00:38,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:00:38,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:38,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:00:38,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:38,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:38,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:00:38,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:00:38,611 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:38,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:00:38,822 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:38,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:00:39,002 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:00:39,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:00:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:39,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179595521] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:39,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:39,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 16:00:39,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097608111] [2021-10-08 16:00:39,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:00:39,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:39,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:00:39,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:00:39,009 INFO L87 Difference]: Start difference. First operand 847 states and 2430 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:40,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:40,712 INFO L93 Difference]: Finished difference Result 1398 states and 3558 transitions. [2021-10-08 16:00:40,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:00:40,712 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:00:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:40,724 INFO L225 Difference]: With dead ends: 1398 [2021-10-08 16:00:40,725 INFO L226 Difference]: Without dead ends: 1398 [2021-10-08 16:00:40,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1220.6ms TimeCoverageRelationStatistics Valid=205, Invalid=1201, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:00:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2021-10-08 16:00:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 933. [2021-10-08 16:00:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 909 states have (on average 2.911991199119912) internal successors, (2647), 932 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 2647 transitions. [2021-10-08 16:00:40,762 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 2647 transitions. Word has length 16 [2021-10-08 16:00:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:40,764 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 2647 transitions. [2021-10-08 16:00:40,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:40,764 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 2647 transitions. [2021-10-08 16:00:40,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:00:40,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:40,766 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:40,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-10-08 16:00:40,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:40,981 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1028323696, now seen corresponding path program 2 times [2021-10-08 16:00:40,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:40,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399868593] [2021-10-08 16:00:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:40,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:41,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:41,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399868593] [2021-10-08 16:00:41,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399868593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:41,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502100692] [2021-10-08 16:00:41,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:00:41,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:41,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:41,244 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:41,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-08 16:00:41,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:00:41,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:41,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-08 16:00:41,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:41,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2021-10-08 16:00:41,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:00:41,722 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:41,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:00:41,820 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:41,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:00:41,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:00:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:41,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502100692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:41,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:41,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 16:00:41,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511918736] [2021-10-08 16:00:41,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:00:41,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:00:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:00:41,927 INFO L87 Difference]: Start difference. First operand 933 states and 2647 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:42,786 INFO L93 Difference]: Finished difference Result 1342 states and 3498 transitions. [2021-10-08 16:00:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:00:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:00:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:42,790 INFO L225 Difference]: With dead ends: 1342 [2021-10-08 16:00:42,790 INFO L226 Difference]: Without dead ends: 1342 [2021-10-08 16:00:42,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 680.6ms TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:00:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-10-08 16:00:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1012. [2021-10-08 16:00:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 988 states have (on average 2.888663967611336) internal successors, (2854), 1011 states have internal predecessors, (2854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2854 transitions. [2021-10-08 16:00:42,827 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 2854 transitions. Word has length 16 [2021-10-08 16:00:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:42,828 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 2854 transitions. [2021-10-08 16:00:42,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 2854 transitions. [2021-10-08 16:00:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:00:42,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:42,830 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:42,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:43,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:43,045 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:43,046 INFO L82 PathProgramCache]: Analyzing trace with hash 318310135, now seen corresponding path program 4 times [2021-10-08 16:00:43,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:43,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376152294] [2021-10-08 16:00:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:43,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:43,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:43,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376152294] [2021-10-08 16:00:43,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376152294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:43,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981893881] [2021-10-08 16:00:43,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:00:43,140 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:43,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:43,141 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:43,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-08 16:00:43,426 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:00:43,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:43,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:00:43,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:43,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981893881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:43,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:43,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 16:00:43,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292994769] [2021-10-08 16:00:43,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:00:43,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:00:43,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:43,622 INFO L87 Difference]: Start difference. First operand 1012 states and 2854 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:43,911 INFO L93 Difference]: Finished difference Result 1020 states and 2689 transitions. [2021-10-08 16:00:43,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:00:43,913 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:00:43,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:43,917 INFO L225 Difference]: With dead ends: 1020 [2021-10-08 16:00:43,918 INFO L226 Difference]: Without dead ends: 986 [2021-10-08 16:00:43,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 261.8ms TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:00:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-10-08 16:00:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 886. [2021-10-08 16:00:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 862 states have (on average 2.8039443155452437) internal successors, (2417), 885 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 2417 transitions. [2021-10-08 16:00:43,973 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 2417 transitions. Word has length 16 [2021-10-08 16:00:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:43,973 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 2417 transitions. [2021-10-08 16:00:43,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 2417 transitions. [2021-10-08 16:00:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:00:43,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:43,975 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:44,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-08 16:00:44,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:44,189 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:44,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1549072634, now seen corresponding path program 4 times [2021-10-08 16:00:44,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:44,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531304252] [2021-10-08 16:00:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:44,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:44,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:44,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531304252] [2021-10-08 16:00:44,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531304252] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:44,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845626644] [2021-10-08 16:00:44,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:00:44,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:44,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:44,444 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:44,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-08 16:00:44,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:00:44,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:44,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:00:44,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:44,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 143 [2021-10-08 16:00:44,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:00:44,929 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:44,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:00:44,975 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:44,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:00:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:45,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845626644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:45,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:45,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 16:00:45,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916633621] [2021-10-08 16:00:45,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:00:45,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:00:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:00:45,132 INFO L87 Difference]: Start difference. First operand 886 states and 2417 transitions. Second operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:45,835 INFO L93 Difference]: Finished difference Result 1140 states and 2957 transitions. [2021-10-08 16:00:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:00:45,836 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:00:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:45,839 INFO L225 Difference]: With dead ends: 1140 [2021-10-08 16:00:45,839 INFO L226 Difference]: Without dead ends: 1140 [2021-10-08 16:00:45,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 537.3ms TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:00:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-10-08 16:00:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 962. [2021-10-08 16:00:45,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 938 states have (on average 2.866737739872068) internal successors, (2689), 961 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2689 transitions. [2021-10-08 16:00:45,869 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2689 transitions. Word has length 17 [2021-10-08 16:00:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:45,870 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 2689 transitions. [2021-10-08 16:00:45,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2689 transitions. [2021-10-08 16:00:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:00:45,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:45,871 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:45,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:46,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-08 16:00:46,083 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:46,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1549072666, now seen corresponding path program 5 times [2021-10-08 16:00:46,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:46,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859799466] [2021-10-08 16:00:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:46,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:46,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:46,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859799466] [2021-10-08 16:00:46,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859799466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:46,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024376781] [2021-10-08 16:00:46,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:00:46,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:46,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:46,362 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:46,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-08 16:00:46,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:00:46,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:46,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:00:46,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:46,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:00:46,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:00:46,877 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:46,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:00:46,930 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:46,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:00:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:47,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024376781] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:47,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:47,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 16:00:47,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476616862] [2021-10-08 16:00:47,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:00:47,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:47,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:00:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:00:47,109 INFO L87 Difference]: Start difference. First operand 962 states and 2689 transitions. Second operand has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:47,792 INFO L93 Difference]: Finished difference Result 1102 states and 2857 transitions. [2021-10-08 16:00:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:00:47,793 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:00:47,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:47,797 INFO L225 Difference]: With dead ends: 1102 [2021-10-08 16:00:47,797 INFO L226 Difference]: Without dead ends: 1102 [2021-10-08 16:00:47,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 626.3ms TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:00:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2021-10-08 16:00:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 962. [2021-10-08 16:00:47,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 938 states have (on average 2.826226012793177) internal successors, (2651), 961 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 2651 transitions. [2021-10-08 16:00:47,826 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 2651 transitions. Word has length 17 [2021-10-08 16:00:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:47,827 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 2651 transitions. [2021-10-08 16:00:47,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 2651 transitions. [2021-10-08 16:00:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:00:47,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:47,829 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2021-10-08 16:00:47,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:48,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-08 16:00:48,043 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:48,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1788089422, now seen corresponding path program 4 times [2021-10-08 16:00:48,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:48,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73284816] [2021-10-08 16:00:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:48,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:48,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:48,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73284816] [2021-10-08 16:00:48,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73284816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:48,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68837797] [2021-10-08 16:00:48,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:00:48,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:48,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:48,293 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:48,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-08 16:00:48,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:00:48,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:48,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:00:48,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:48,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 171 [2021-10-08 16:00:48,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:00:48,769 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:00:48,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:00:48,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:00:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:48,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68837797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:48,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:48,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 16:00:48,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453544375] [2021-10-08 16:00:48,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:00:48,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:00:48,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:00:48,974 INFO L87 Difference]: Start difference. First operand 962 states and 2651 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:49,818 INFO L93 Difference]: Finished difference Result 1040 states and 2945 transitions. [2021-10-08 16:00:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:00:49,819 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:00:49,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:49,822 INFO L225 Difference]: With dead ends: 1040 [2021-10-08 16:00:49,822 INFO L226 Difference]: Without dead ends: 1040 [2021-10-08 16:00:49,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 567.5ms TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:00:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-10-08 16:00:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 998. [2021-10-08 16:00:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 974 states have (on average 2.8562628336755647) internal successors, (2782), 997 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 2782 transitions. [2021-10-08 16:00:49,851 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 2782 transitions. Word has length 19 [2021-10-08 16:00:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:49,851 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 2782 transitions. [2021-10-08 16:00:49,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2782 transitions. [2021-10-08 16:00:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:00:49,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:49,853 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2021-10-08 16:00:49,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-10-08 16:00:50,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:50,067 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:50,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1788089351, now seen corresponding path program 3 times [2021-10-08 16:00:50,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:50,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920762528] [2021-10-08 16:00:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:50,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:50,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:50,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920762528] [2021-10-08 16:00:50,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920762528] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:50,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792010773] [2021-10-08 16:00:50,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:00:50,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:50,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:50,277 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:50,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-08 16:00:50,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:00:50,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:50,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:00:50,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:50,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:00:50,921 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:50,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:00:51,298 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:00:51,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:00:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:51,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792010773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:51,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:51,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 16:00:51,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353741633] [2021-10-08 16:00:51,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:00:51,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:51,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:00:51,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:00:51,305 INFO L87 Difference]: Start difference. First operand 998 states and 2782 transitions. Second operand has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:53,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:53,936 INFO L93 Difference]: Finished difference Result 1116 states and 3152 transitions. [2021-10-08 16:00:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:00:53,937 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:00:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:53,941 INFO L225 Difference]: With dead ends: 1116 [2021-10-08 16:00:53,942 INFO L226 Difference]: Without dead ends: 1116 [2021-10-08 16:00:53,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2008.1ms TimeCoverageRelationStatistics Valid=348, Invalid=2304, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:00:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-10-08 16:00:53,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1049. [2021-10-08 16:00:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1025 states have (on average 2.841951219512195) internal successors, (2913), 1048 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 2913 transitions. [2021-10-08 16:00:53,974 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 2913 transitions. Word has length 19 [2021-10-08 16:00:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:53,974 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 2913 transitions. [2021-10-08 16:00:53,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 2913 transitions. [2021-10-08 16:00:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:00:53,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:53,981 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:54,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:54,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-08 16:00:54,195 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:54,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1694794778, now seen corresponding path program 5 times [2021-10-08 16:00:54,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:54,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921813454] [2021-10-08 16:00:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:54,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:54,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:54,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921813454] [2021-10-08 16:00:54,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921813454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:54,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439937907] [2021-10-08 16:00:54,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:00:54,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:54,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:54,342 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:54,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-08 16:00:54,693 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 16:00:54,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:54,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:00:54,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:54,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439937907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:54,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:54,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 16:00:54,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556683865] [2021-10-08 16:00:54,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:00:54,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:00:54,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:00:54,972 INFO L87 Difference]: Start difference. First operand 1049 states and 2913 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:55,524 INFO L93 Difference]: Finished difference Result 1749 states and 4546 transitions. [2021-10-08 16:00:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:00:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:00:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:55,537 INFO L225 Difference]: With dead ends: 1749 [2021-10-08 16:00:55,537 INFO L226 Difference]: Without dead ends: 1707 [2021-10-08 16:00:55,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 529.6ms TimeCoverageRelationStatistics Valid=400, Invalid=1322, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:00:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-08 16:00:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1391. [2021-10-08 16:00:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1367 states have (on average 2.8522311631309436) internal successors, (3899), 1390 states have internal predecessors, (3899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 3899 transitions. [2021-10-08 16:00:55,584 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 3899 transitions. Word has length 19 [2021-10-08 16:00:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:55,585 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 3899 transitions. [2021-10-08 16:00:55,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 3899 transitions. [2021-10-08 16:00:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:00:55,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:55,587 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:55,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:00:55,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-08 16:00:55,801 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:55,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1209336201, now seen corresponding path program 3 times [2021-10-08 16:00:55,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:55,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736448961] [2021-10-08 16:00:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:55,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:55,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:55,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736448961] [2021-10-08 16:00:55,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736448961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:55,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962129728] [2021-10-08 16:00:55,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:00:55,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:55,935 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:55,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-08 16:00:56,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:00:56,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:56,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:00:56,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:56,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962129728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:56,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:56,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-08 16:00:56,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757918878] [2021-10-08 16:00:56,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:00:56,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:00:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:00:56,501 INFO L87 Difference]: Start difference. First operand 1391 states and 3899 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:00:56,689 INFO L93 Difference]: Finished difference Result 1325 states and 3674 transitions. [2021-10-08 16:00:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:00:56,689 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:00:56,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:00:56,692 INFO L225 Difference]: With dead ends: 1325 [2021-10-08 16:00:56,692 INFO L226 Difference]: Without dead ends: 1104 [2021-10-08 16:00:56,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 214.3ms TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:00:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-10-08 16:00:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1104. [2021-10-08 16:00:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1080 states have (on average 2.8787037037037035) internal successors, (3109), 1103 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 3109 transitions. [2021-10-08 16:00:56,722 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 3109 transitions. Word has length 19 [2021-10-08 16:00:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:00:56,722 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 3109 transitions. [2021-10-08 16:00:56,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:00:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 3109 transitions. [2021-10-08 16:00:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:00:56,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:00:56,724 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:00:56,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-08 16:00:56,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-08 16:00:56,938 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:00:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:00:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2110927587, now seen corresponding path program 6 times [2021-10-08 16:00:56,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:00:56,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393133218] [2021-10-08 16:00:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:00:56,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:00:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:00:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:57,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:00:57,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393133218] [2021-10-08 16:00:57,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393133218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:57,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293953500] [2021-10-08 16:00:57,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:00:57,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:00:57,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:00:57,287 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:00:57,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-08 16:00:57,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 16:00:57,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:00:57,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:00:57,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:00:57,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:00:57,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2021-10-08 16:00:57,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:00:58,069 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:58,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:00:58,152 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:00:58,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:00:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:00:58,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293953500] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:00:58,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:00:58,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-08 16:00:58,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014690949] [2021-10-08 16:00:58,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:00:58,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:00:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:00:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:00:58,596 INFO L87 Difference]: Start difference. First operand 1104 states and 3109 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:01,328 INFO L93 Difference]: Finished difference Result 2450 states and 6305 transitions. [2021-10-08 16:01:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:01:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:01:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:01,334 INFO L225 Difference]: With dead ends: 2450 [2021-10-08 16:01:01,334 INFO L226 Difference]: Without dead ends: 2450 [2021-10-08 16:01:01,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2218.6ms TimeCoverageRelationStatistics Valid=356, Invalid=2506, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:01:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2021-10-08 16:01:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 1626. [2021-10-08 16:01:01,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1602 states have (on average 2.9931335830212236) internal successors, (4795), 1625 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 4795 transitions. [2021-10-08 16:01:01,390 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 4795 transitions. Word has length 20 [2021-10-08 16:01:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:01,390 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 4795 transitions. [2021-10-08 16:01:01,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 4795 transitions. [2021-10-08 16:01:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:01:01,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:01,399 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:01,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-08 16:01:01,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-08 16:01:01,614 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:01,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2110927619, now seen corresponding path program 6 times [2021-10-08 16:01:01,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:01,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511602683] [2021-10-08 16:01:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:01,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:01,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:01,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511602683] [2021-10-08 16:01:01,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511602683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:01,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743822140] [2021-10-08 16:01:01,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:01:01,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:01,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:01,960 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:01,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-08 16:01:02,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 16:01:02,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:02,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:01:02,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:02,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:01:02,715 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:02,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:01:02,800 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:02,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:01:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:03,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743822140] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:03,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:03,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-08 16:01:03,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958234430] [2021-10-08 16:01:03,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:01:03,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:03,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:01:03,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:01:03,239 INFO L87 Difference]: Start difference. First operand 1626 states and 4795 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:06,326 INFO L93 Difference]: Finished difference Result 2410 states and 6120 transitions. [2021-10-08 16:01:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:01:06,326 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:01:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:06,331 INFO L225 Difference]: With dead ends: 2410 [2021-10-08 16:01:06,331 INFO L226 Difference]: Without dead ends: 2410 [2021-10-08 16:01:06,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 2457.9ms TimeCoverageRelationStatistics Valid=355, Invalid=2507, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:01:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-10-08 16:01:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1626. [2021-10-08 16:01:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1602 states have (on average 2.9431960049937578) internal successors, (4715), 1625 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 4715 transitions. [2021-10-08 16:01:06,387 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 4715 transitions. Word has length 20 [2021-10-08 16:01:06,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:06,387 INFO L470 AbstractCegarLoop]: Abstraction has 1626 states and 4715 transitions. [2021-10-08 16:01:06,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 4715 transitions. [2021-10-08 16:01:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:01:06,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:06,390 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:06,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:06,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-08 16:01:06,604 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1698581203, now seen corresponding path program 3 times [2021-10-08 16:01:06,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:06,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169890627] [2021-10-08 16:01:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:06,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:06,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:06,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169890627] [2021-10-08 16:01:06,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169890627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:06,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546153333] [2021-10-08 16:01:06,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:01:06,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:06,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:06,882 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:06,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-08 16:01:07,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 16:01:07,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:07,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:01:07,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:07,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:01:07,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:01:07,553 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:07,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:01:07,759 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:07,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:01:08,062 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:01:08,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:01:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:08,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546153333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:08,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:08,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 16:01:08,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408188423] [2021-10-08 16:01:08,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:01:08,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:01:08,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:01:08,070 INFO L87 Difference]: Start difference. First operand 1626 states and 4715 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:10,358 INFO L93 Difference]: Finished difference Result 2434 states and 6521 transitions. [2021-10-08 16:01:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:01:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:01:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:10,363 INFO L225 Difference]: With dead ends: 2434 [2021-10-08 16:01:10,363 INFO L226 Difference]: Without dead ends: 2434 [2021-10-08 16:01:10,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1707.9ms TimeCoverageRelationStatistics Valid=251, Invalid=1729, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:01:10,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-10-08 16:01:10,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1704. [2021-10-08 16:01:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1680 states have (on average 2.975595238095238) internal successors, (4999), 1703 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 4999 transitions. [2021-10-08 16:01:10,410 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 4999 transitions. Word has length 20 [2021-10-08 16:01:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:10,410 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 4999 transitions. [2021-10-08 16:01:10,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 4999 transitions. [2021-10-08 16:01:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:01:10,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:10,413 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:10,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:10,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-08 16:01:10,627 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:10,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:10,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1698581132, now seen corresponding path program 4 times [2021-10-08 16:01:10,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:10,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748080533] [2021-10-08 16:01:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:10,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:10,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:10,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748080533] [2021-10-08 16:01:10,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748080533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:10,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756911870] [2021-10-08 16:01:10,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:01:10,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:10,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:10,908 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:10,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-08 16:01:11,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:01:11,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:11,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-08 16:01:11,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:11,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:11,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 144 [2021-10-08 16:01:11,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:01:11,580 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:01:11,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:01:11,692 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:01:11,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:01:11,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:01:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:11,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756911870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:11,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:11,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 16:01:11,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438531501] [2021-10-08 16:01:11,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:01:11,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:01:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:01:11,868 INFO L87 Difference]: Start difference. First operand 1704 states and 4999 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:13,096 INFO L93 Difference]: Finished difference Result 2302 states and 6147 transitions. [2021-10-08 16:01:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:01:13,097 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 16:01:13,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:13,103 INFO L225 Difference]: With dead ends: 2302 [2021-10-08 16:01:13,103 INFO L226 Difference]: Without dead ends: 2302 [2021-10-08 16:01:13,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 934.4ms TimeCoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:01:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-10-08 16:01:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1773. [2021-10-08 16:01:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1749 states have (on average 2.9331046312178386) internal successors, (5130), 1772 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 5130 transitions. [2021-10-08 16:01:13,149 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 5130 transitions. Word has length 20 [2021-10-08 16:01:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:13,149 INFO L470 AbstractCegarLoop]: Abstraction has 1773 states and 5130 transitions. [2021-10-08 16:01:13,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 5130 transitions. [2021-10-08 16:01:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:01:13,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:13,152 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:13,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:13,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:13,366 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:13,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1014247524, now seen corresponding path program 1 times [2021-10-08 16:01:13,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:13,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4969243] [2021-10-08 16:01:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:13,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:01:13,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:13,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4969243] [2021-10-08 16:01:13,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4969243] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:13,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095478359] [2021-10-08 16:01:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:13,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:13,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:13,424 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:13,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-08 16:01:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:13,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:01:13,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:01:13,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095478359] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:13,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:13,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-08 16:01:13,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39512509] [2021-10-08 16:01:13,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:01:13,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:01:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:01:13,914 INFO L87 Difference]: Start difference. First operand 1773 states and 5130 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:13,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:13,966 INFO L93 Difference]: Finished difference Result 2241 states and 6085 transitions. [2021-10-08 16:01:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:01:13,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:01:13,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:13,971 INFO L225 Difference]: With dead ends: 2241 [2021-10-08 16:01:13,971 INFO L226 Difference]: Without dead ends: 2241 [2021-10-08 16:01:13,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:01:13,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-10-08 16:01:14,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1905. [2021-10-08 16:01:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1881 states have (on average 2.958532695374801) internal successors, (5565), 1904 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 5565 transitions. [2021-10-08 16:01:14,019 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 5565 transitions. Word has length 21 [2021-10-08 16:01:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 5565 transitions. [2021-10-08 16:01:14,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 5565 transitions. [2021-10-08 16:01:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:01:14,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:14,023 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:14,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:14,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:14,238 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash -998695902, now seen corresponding path program 1 times [2021-10-08 16:01:14,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:14,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736078873] [2021-10-08 16:01:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:14,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-08 16:01:14,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:14,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736078873] [2021-10-08 16:01:14,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736078873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:14,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:01:14,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:01:14,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792451302] [2021-10-08 16:01:14,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:01:14,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:01:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:01:14,306 INFO L87 Difference]: Start difference. First operand 1905 states and 5565 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:14,326 INFO L93 Difference]: Finished difference Result 1861 states and 5404 transitions. [2021-10-08 16:01:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:01:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:01:14,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:14,331 INFO L225 Difference]: With dead ends: 1861 [2021-10-08 16:01:14,332 INFO L226 Difference]: Without dead ends: 1861 [2021-10-08 16:01:14,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:01:14,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-10-08 16:01:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1861. [2021-10-08 16:01:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1842 states have (on average 2.9337676438653637) internal successors, (5404), 1860 states have internal predecessors, (5404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 5404 transitions. [2021-10-08 16:01:14,375 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 5404 transitions. Word has length 22 [2021-10-08 16:01:14,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:14,376 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 5404 transitions. [2021-10-08 16:01:14,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 5404 transitions. [2021-10-08 16:01:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:01:14,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:14,379 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:14,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-08 16:01:14,379 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:14,380 INFO L82 PathProgramCache]: Analyzing trace with hash -894801038, now seen corresponding path program 7 times [2021-10-08 16:01:14,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:14,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718630468] [2021-10-08 16:01:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:14,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:14,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:14,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718630468] [2021-10-08 16:01:14,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718630468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:14,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436469349] [2021-10-08 16:01:14,848 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:01:14,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:14,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:14,849 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:14,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-08 16:01:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:15,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:01:15,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:15,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:15,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 93 [2021-10-08 16:01:15,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:01:15,650 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:01:15,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:01:15,682 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:01:15,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:01:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:15,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436469349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:15,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:15,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2021-10-08 16:01:15,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895425527] [2021-10-08 16:01:15,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:01:15,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:01:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:01:15,858 INFO L87 Difference]: Start difference. First operand 1861 states and 5404 transitions. Second operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:16,632 INFO L93 Difference]: Finished difference Result 2321 states and 6290 transitions. [2021-10-08 16:01:16,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:01:16,632 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:01:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:16,638 INFO L225 Difference]: With dead ends: 2321 [2021-10-08 16:01:16,639 INFO L226 Difference]: Without dead ends: 2321 [2021-10-08 16:01:16,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 624.6ms TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:01:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2021-10-08 16:01:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 1949. [2021-10-08 16:01:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1930 states have (on average 2.9647668393782385) internal successors, (5722), 1948 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 5722 transitions. [2021-10-08 16:01:16,704 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 5722 transitions. Word has length 23 [2021-10-08 16:01:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:16,704 INFO L470 AbstractCegarLoop]: Abstraction has 1949 states and 5722 transitions. [2021-10-08 16:01:16,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 5722 transitions. [2021-10-08 16:01:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:01:16,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:16,707 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:16,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:16,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:16,908 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash -894801006, now seen corresponding path program 7 times [2021-10-08 16:01:16,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:16,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370623946] [2021-10-08 16:01:16,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:16,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:17,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:17,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370623946] [2021-10-08 16:01:17,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370623946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:17,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657390557] [2021-10-08 16:01:17,394 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:01:17,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:17,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:17,395 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:17,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-08 16:01:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:17,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:01:17,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:17,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:17,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:01:18,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:01:18,224 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:01:18,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:01:18,253 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:01:18,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:01:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:18,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657390557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:18,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:18,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2021-10-08 16:01:18,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256164657] [2021-10-08 16:01:18,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:01:18,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:01:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:01:18,445 INFO L87 Difference]: Start difference. First operand 1949 states and 5722 transitions. Second operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:19,507 INFO L93 Difference]: Finished difference Result 2277 states and 6173 transitions. [2021-10-08 16:01:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:01:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:01:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:19,513 INFO L225 Difference]: With dead ends: 2277 [2021-10-08 16:01:19,513 INFO L226 Difference]: Without dead ends: 2277 [2021-10-08 16:01:19,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 701.5ms TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:01:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2021-10-08 16:01:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1949. [2021-10-08 16:01:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1930 states have (on average 2.9419689119170984) internal successors, (5678), 1948 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 5678 transitions. [2021-10-08 16:01:19,552 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 5678 transitions. Word has length 23 [2021-10-08 16:01:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:19,552 INFO L470 AbstractCegarLoop]: Abstraction has 1949 states and 5678 transitions. [2021-10-08 16:01:19,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 5678 transitions. [2021-10-08 16:01:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:01:19,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:19,555 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-10-08 16:01:19,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-08 16:01:19,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:19,769 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:19,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:19,769 INFO L82 PathProgramCache]: Analyzing trace with hash -761028886, now seen corresponding path program 5 times [2021-10-08 16:01:19,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:19,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678925289] [2021-10-08 16:01:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:19,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:20,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:20,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678925289] [2021-10-08 16:01:20,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678925289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:20,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893738445] [2021-10-08 16:01:20,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:01:20,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:20,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:20,044 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:20,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-08 16:01:20,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 16:01:20,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:20,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:01:20,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:20,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:01:20,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:01:20,750 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:01:20,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:01:21,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:01:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:21,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893738445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:21,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:21,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-10-08 16:01:21,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624110508] [2021-10-08 16:01:21,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:01:21,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:01:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:01:21,009 INFO L87 Difference]: Start difference. First operand 1949 states and 5678 transitions. Second operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:21,927 INFO L93 Difference]: Finished difference Result 2103 states and 6286 transitions. [2021-10-08 16:01:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:01:21,928 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:01:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:21,934 INFO L225 Difference]: With dead ends: 2103 [2021-10-08 16:01:21,934 INFO L226 Difference]: Without dead ends: 2103 [2021-10-08 16:01:21,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 733.8ms TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:01:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2021-10-08 16:01:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2021. [2021-10-08 16:01:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2002 states have (on average 2.972027972027972) internal successors, (5950), 2020 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:21,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 5950 transitions. [2021-10-08 16:01:21,974 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 5950 transitions. Word has length 23 [2021-10-08 16:01:21,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:21,974 INFO L470 AbstractCegarLoop]: Abstraction has 2021 states and 5950 transitions. [2021-10-08 16:01:21,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:21,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 5950 transitions. [2021-10-08 16:01:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:01:21,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:21,976 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-10-08 16:01:22,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:22,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-08 16:01:22,177 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -761028815, now seen corresponding path program 4 times [2021-10-08 16:01:22,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:22,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052187616] [2021-10-08 16:01:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:22,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:22,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:22,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052187616] [2021-10-08 16:01:22,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052187616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:22,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862856425] [2021-10-08 16:01:22,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:01:22,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:22,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:22,452 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:22,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-08 16:01:22,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:01:22,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:22,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:01:22,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:22,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 530 treesize of output 514 [2021-10-08 16:01:23,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:01:23,147 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:01:23,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:01:23,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:01:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:23,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862856425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:23,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:23,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-10-08 16:01:23,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946343934] [2021-10-08 16:01:23,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:01:23,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:01:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:01:23,426 INFO L87 Difference]: Start difference. First operand 2021 states and 5950 transitions. Second operand has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:24,326 INFO L93 Difference]: Finished difference Result 2101 states and 6216 transitions. [2021-10-08 16:01:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:01:24,327 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:01:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:24,332 INFO L225 Difference]: With dead ends: 2101 [2021-10-08 16:01:24,332 INFO L226 Difference]: Without dead ends: 2101 [2021-10-08 16:01:24,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 732.5ms TimeCoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:01:24,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-10-08 16:01:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2021. [2021-10-08 16:01:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2002 states have (on average 2.938061938061938) internal successors, (5882), 2020 states have internal predecessors, (5882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 5882 transitions. [2021-10-08 16:01:24,363 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 5882 transitions. Word has length 23 [2021-10-08 16:01:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:24,363 INFO L470 AbstractCegarLoop]: Abstraction has 2021 states and 5882 transitions. [2021-10-08 16:01:24,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 5882 transitions. [2021-10-08 16:01:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:01:24,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:24,366 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:24,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-08 16:01:24,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-08 16:01:24,581 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:24,581 INFO L82 PathProgramCache]: Analyzing trace with hash -265676488, now seen corresponding path program 2 times [2021-10-08 16:01:24,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:24,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643826850] [2021-10-08 16:01:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:24,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:24,646 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:01:24,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:24,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643826850] [2021-10-08 16:01:24,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643826850] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:24,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649139870] [2021-10-08 16:01:24,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:24,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:24,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:24,648 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:24,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-08 16:01:25,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:01:25,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:25,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:01:25,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:25,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 57 [2021-10-08 16:01:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-10-08 16:01:25,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649139870] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:25,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:25,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2] total 9 [2021-10-08 16:01:25,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148761384] [2021-10-08 16:01:25,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:01:25,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:25,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:01:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:01:25,313 INFO L87 Difference]: Start difference. First operand 2021 states and 5882 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:25,461 INFO L93 Difference]: Finished difference Result 2589 states and 7081 transitions. [2021-10-08 16:01:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:01:25,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:01:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:25,467 INFO L225 Difference]: With dead ends: 2589 [2021-10-08 16:01:25,467 INFO L226 Difference]: Without dead ends: 2523 [2021-10-08 16:01:25,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:01:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2021-10-08 16:01:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 1455. [2021-10-08 16:01:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1441 states have (on average 2.843858431644691) internal successors, (4098), 1454 states have internal predecessors, (4098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4098 transitions. [2021-10-08 16:01:25,499 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4098 transitions. Word has length 23 [2021-10-08 16:01:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:25,500 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 4098 transitions. [2021-10-08 16:01:25,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4098 transitions. [2021-10-08 16:01:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:01:25,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:25,502 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:25,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:25,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-08 16:01:25,717 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash 875336691, now seen corresponding path program 5 times [2021-10-08 16:01:25,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:25,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741113725] [2021-10-08 16:01:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:25,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:25,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:25,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741113725] [2021-10-08 16:01:25,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741113725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:25,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475579944] [2021-10-08 16:01:25,835 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:01:25,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:25,842 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-08 16:01:26,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 16:01:26,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:26,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:01:26,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:26,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475579944] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:26,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:26,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-08 16:01:26,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110211017] [2021-10-08 16:01:26,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:01:26,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:26,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:01:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:01:26,687 INFO L87 Difference]: Start difference. First operand 1455 states and 4098 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:26,909 INFO L93 Difference]: Finished difference Result 1341 states and 3755 transitions. [2021-10-08 16:01:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:01:26,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:01:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:26,912 INFO L225 Difference]: With dead ends: 1341 [2021-10-08 16:01:26,912 INFO L226 Difference]: Without dead ends: 1004 [2021-10-08 16:01:26,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 271.8ms TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:01:26,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-08 16:01:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2021-10-08 16:01:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 990 states have (on average 2.895959595959596) internal successors, (2867), 1003 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2867 transitions. [2021-10-08 16:01:26,940 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2867 transitions. Word has length 23 [2021-10-08 16:01:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:26,941 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2867 transitions. [2021-10-08 16:01:26,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2867 transitions. [2021-10-08 16:01:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:01:26,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:26,943 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:26,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-10-08 16:01:27,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:27,157 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:27,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:27,157 INFO L82 PathProgramCache]: Analyzing trace with hash -828013527, now seen corresponding path program 4 times [2021-10-08 16:01:27,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:27,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368657555] [2021-10-08 16:01:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:27,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:27,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:27,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368657555] [2021-10-08 16:01:27,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368657555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:27,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199894017] [2021-10-08 16:01:27,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:01:27,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:27,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:27,588 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:27,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-08 16:01:28,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:01:28,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:28,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:01:28,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:28,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 181 [2021-10-08 16:01:28,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:01:28,484 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:28,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:01:28,682 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:28,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:01:29,126 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:01:29,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:01:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:29,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199894017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:29,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:29,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-10-08 16:01:29,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453653890] [2021-10-08 16:01:29,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:01:29,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:01:29,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:01:29,133 INFO L87 Difference]: Start difference. First operand 1004 states and 2867 transitions. Second operand has 29 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:31,854 INFO L93 Difference]: Finished difference Result 1575 states and 4101 transitions. [2021-10-08 16:01:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:01:31,854 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:01:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:31,858 INFO L225 Difference]: With dead ends: 1575 [2021-10-08 16:01:31,858 INFO L226 Difference]: Without dead ends: 1575 [2021-10-08 16:01:31,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1994.1ms TimeCoverageRelationStatistics Valid=301, Invalid=2351, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:01:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-10-08 16:01:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1092. [2021-10-08 16:01:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 1078 states have (on average 2.9183673469387754) internal successors, (3146), 1091 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 3146 transitions. [2021-10-08 16:01:31,883 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 3146 transitions. Word has length 24 [2021-10-08 16:01:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:31,883 INFO L470 AbstractCegarLoop]: Abstraction has 1092 states and 3146 transitions. [2021-10-08 16:01:31,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 3146 transitions. [2021-10-08 16:01:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:01:31,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:31,886 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:31,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-08 16:01:32,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:32,102 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:32,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:32,103 INFO L82 PathProgramCache]: Analyzing trace with hash -828013456, now seen corresponding path program 6 times [2021-10-08 16:01:32,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:32,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131795832] [2021-10-08 16:01:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:32,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:32,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:32,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131795832] [2021-10-08 16:01:32,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131795832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:32,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35473642] [2021-10-08 16:01:32,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:01:32,469 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:32,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:32,473 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:32,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-08 16:01:33,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 16:01:33,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:33,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:01:33,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:33,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2021-10-08 16:01:33,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:01:33,460 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:33,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:01:33,662 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:33,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:01:34,071 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:01:34,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:01:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:34,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35473642] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:34,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:34,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-10-08 16:01:34,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775732027] [2021-10-08 16:01:34,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:01:34,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:01:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:01:34,078 INFO L87 Difference]: Start difference. First operand 1092 states and 3146 transitions. Second operand has 29 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:36,736 INFO L93 Difference]: Finished difference Result 1530 states and 3978 transitions. [2021-10-08 16:01:36,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:01:36,737 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:01:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:36,740 INFO L225 Difference]: With dead ends: 1530 [2021-10-08 16:01:36,740 INFO L226 Difference]: Without dead ends: 1530 [2021-10-08 16:01:36,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 2028.6ms TimeCoverageRelationStatistics Valid=301, Invalid=2351, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:01:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2021-10-08 16:01:36,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1040. [2021-10-08 16:01:36,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 1026 states have (on average 2.891812865497076) internal successors, (2967), 1039 states have internal predecessors, (2967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 2967 transitions. [2021-10-08 16:01:36,762 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 2967 transitions. Word has length 24 [2021-10-08 16:01:36,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:36,763 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 2967 transitions. [2021-10-08 16:01:36,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:36,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 2967 transitions. [2021-10-08 16:01:36,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:01:36,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:36,764 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:36,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:36,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:36,965 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:36,966 INFO L82 PathProgramCache]: Analyzing trace with hash -910282658, now seen corresponding path program 8 times [2021-10-08 16:01:36,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:36,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096213925] [2021-10-08 16:01:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:36,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:37,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:37,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096213925] [2021-10-08 16:01:37,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096213925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:37,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493662379] [2021-10-08 16:01:37,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:37,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:37,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:37,151 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:37,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-08 16:01:37,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:01:37,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:37,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:01:37,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:38,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493662379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:38,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:38,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-08 16:01:38,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792017147] [2021-10-08 16:01:38,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:01:38,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:01:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:01:38,174 INFO L87 Difference]: Start difference. First operand 1040 states and 2967 transitions. Second operand has 31 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 30 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:39,088 INFO L93 Difference]: Finished difference Result 2649 states and 7014 transitions. [2021-10-08 16:01:39,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:01:39,089 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 30 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:01:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:39,095 INFO L225 Difference]: With dead ends: 2649 [2021-10-08 16:01:39,096 INFO L226 Difference]: Without dead ends: 2591 [2021-10-08 16:01:39,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 872.5ms TimeCoverageRelationStatistics Valid=770, Invalid=2652, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:01:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-10-08 16:01:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2047. [2021-10-08 16:01:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2033 states have (on average 2.90850959173635) internal successors, (5913), 2046 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 5913 transitions. [2021-10-08 16:01:39,151 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 5913 transitions. Word has length 25 [2021-10-08 16:01:39,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:39,151 INFO L470 AbstractCegarLoop]: Abstraction has 2047 states and 5913 transitions. [2021-10-08 16:01:39,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 30 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 5913 transitions. [2021-10-08 16:01:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:01:39,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:39,155 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:39,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:39,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:39,371 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:39,371 INFO L82 PathProgramCache]: Analyzing trace with hash 101387823, now seen corresponding path program 1 times [2021-10-08 16:01:39,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:39,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843992029] [2021-10-08 16:01:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:39,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:01:39,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:39,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843992029] [2021-10-08 16:01:39,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843992029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:39,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002122530] [2021-10-08 16:01:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:39,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:39,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:39,425 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:39,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-08 16:01:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:40,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:01:40,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:01:40,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002122530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:40,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:40,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-08 16:01:40,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912854910] [2021-10-08 16:01:40,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:01:40,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:01:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:01:40,125 INFO L87 Difference]: Start difference. First operand 2047 states and 5913 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:40,177 INFO L93 Difference]: Finished difference Result 2534 states and 6991 transitions. [2021-10-08 16:01:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:01:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:01:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:40,183 INFO L225 Difference]: With dead ends: 2534 [2021-10-08 16:01:40,183 INFO L226 Difference]: Without dead ends: 2534 [2021-10-08 16:01:40,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:01:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2021-10-08 16:01:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2204. [2021-10-08 16:01:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2190 states have (on average 2.931963470319635) internal successors, (6421), 2203 states have internal predecessors, (6421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 6421 transitions. [2021-10-08 16:01:40,225 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 6421 transitions. Word has length 25 [2021-10-08 16:01:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:40,225 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 6421 transitions. [2021-10-08 16:01:40,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 6421 transitions. [2021-10-08 16:01:40,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:01:40,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:40,228 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:40,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-10-08 16:01:40,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-08 16:01:40,430 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:40,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1447234149, now seen corresponding path program 9 times [2021-10-08 16:01:40,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:40,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514150795] [2021-10-08 16:01:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:40,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:40,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:40,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514150795] [2021-10-08 16:01:40,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514150795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:40,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120425177] [2021-10-08 16:01:40,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:01:40,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:40,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:40,910 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:40,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-08 16:01:41,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-08 16:01:41,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:41,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:01:41,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:41,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:41,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:01:42,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:01:42,293 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:42,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:01:42,386 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:42,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:01:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:43,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120425177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:43,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:43,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2021-10-08 16:01:43,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404922015] [2021-10-08 16:01:43,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:01:43,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:01:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:01:43,079 INFO L87 Difference]: Start difference. First operand 2204 states and 6421 transitions. Second operand has 36 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:48,636 INFO L93 Difference]: Finished difference Result 4538 states and 11744 transitions. [2021-10-08 16:01:48,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:01:48,637 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:01:48,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:48,647 INFO L225 Difference]: With dead ends: 4538 [2021-10-08 16:01:48,647 INFO L226 Difference]: Without dead ends: 4538 [2021-10-08 16:01:48,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 4106.2ms TimeCoverageRelationStatistics Valid=642, Invalid=5364, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:01:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4538 states. [2021-10-08 16:01:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4538 to 3054. [2021-10-08 16:01:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 3040 states have (on average 3.018092105263158) internal successors, (9175), 3053 states have internal predecessors, (9175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 9175 transitions. [2021-10-08 16:01:48,716 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 9175 transitions. Word has length 26 [2021-10-08 16:01:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:48,717 INFO L470 AbstractCegarLoop]: Abstraction has 3054 states and 9175 transitions. [2021-10-08 16:01:48,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 9175 transitions. [2021-10-08 16:01:48,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:01:48,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:48,720 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:48,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:48,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-08 16:01:48,921 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:48,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:48,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1447234117, now seen corresponding path program 8 times [2021-10-08 16:01:48,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:48,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522291825] [2021-10-08 16:01:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:48,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:49,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:49,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522291825] [2021-10-08 16:01:49,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522291825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:49,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361589998] [2021-10-08 16:01:49,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:01:49,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:49,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:49,417 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:49,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-08 16:01:50,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:01:50,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:50,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:01:50,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:50,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:01:50,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 113 [2021-10-08 16:01:50,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:01:50,589 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:50,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:01:50,687 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:50,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:01:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:51,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361589998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:51,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:51,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2021-10-08 16:01:51,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190123520] [2021-10-08 16:01:51,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:01:51,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:01:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:01:51,387 INFO L87 Difference]: Start difference. First operand 3054 states and 9175 transitions. Second operand has 36 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:57,274 INFO L93 Difference]: Finished difference Result 4488 states and 11508 transitions. [2021-10-08 16:01:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:01:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:01:57,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:57,284 INFO L225 Difference]: With dead ends: 4488 [2021-10-08 16:01:57,285 INFO L226 Difference]: Without dead ends: 4422 [2021-10-08 16:01:57,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 4242.4ms TimeCoverageRelationStatistics Valid=642, Invalid=5364, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:01:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2021-10-08 16:01:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 2490. [2021-10-08 16:01:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2476 states have (on average 2.9208400646203554) internal successors, (7232), 2489 states have internal predecessors, (7232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 7232 transitions. [2021-10-08 16:01:57,338 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 7232 transitions. Word has length 26 [2021-10-08 16:01:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:57,338 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 7232 transitions. [2021-10-08 16:01:57,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:57,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 7232 transitions. [2021-10-08 16:01:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:01:57,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:57,341 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2021-10-08 16:01:57,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-08 16:01:57,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-08 16:01:57,542 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -435563667, now seen corresponding path program 1 times [2021-10-08 16:01:57,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:57,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713638687] [2021-10-08 16:01:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:57,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-08 16:01:57,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:57,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713638687] [2021-10-08 16:01:57,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713638687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:01:57,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:01:57,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:01:57,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831596358] [2021-10-08 16:01:57,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:01:57,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:01:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:01:57,580 INFO L87 Difference]: Start difference. First operand 2490 states and 7232 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:01:57,599 INFO L93 Difference]: Finished difference Result 2412 states and 6937 transitions. [2021-10-08 16:01:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:01:57,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:01:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:01:57,607 INFO L225 Difference]: With dead ends: 2412 [2021-10-08 16:01:57,607 INFO L226 Difference]: Without dead ends: 2412 [2021-10-08 16:01:57,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:01:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-10-08 16:01:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2021-10-08 16:01:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 2401 states have (on average 2.889212827988338) internal successors, (6937), 2411 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 6937 transitions. [2021-10-08 16:01:57,649 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 6937 transitions. Word has length 26 [2021-10-08 16:01:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:01:57,650 INFO L470 AbstractCegarLoop]: Abstraction has 2412 states and 6937 transitions. [2021-10-08 16:01:57,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:01:57,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 6937 transitions. [2021-10-08 16:01:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:01:57,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:01:57,652 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2021-10-08 16:01:57,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-08 16:01:57,653 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:01:57,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:01:57,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1858459442, now seen corresponding path program 6 times [2021-10-08 16:01:57,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:01:57,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170593078] [2021-10-08 16:01:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:01:57,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:01:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:01:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:58,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:01:58,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170593078] [2021-10-08 16:01:58,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170593078] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:58,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204791514] [2021-10-08 16:01:58,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:01:58,049 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:01:58,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:01:58,050 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:01:58,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-08 16:01:58,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-10-08 16:01:58,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:01:58,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:01:58,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:01:58,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:01:59,048 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:01:59,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:01:59,658 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:01:59,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:01:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 35 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:01:59,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204791514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:01:59,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:01:59,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-08 16:01:59,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829428047] [2021-10-08 16:01:59,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:01:59,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:01:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:01:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:01:59,664 INFO L87 Difference]: Start difference. First operand 2412 states and 6937 transitions. Second operand has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:04,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:04,474 INFO L93 Difference]: Finished difference Result 2669 states and 7798 transitions. [2021-10-08 16:02:04,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:02:04,474 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 16:02:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:04,482 INFO L225 Difference]: With dead ends: 2669 [2021-10-08 16:02:04,482 INFO L226 Difference]: Without dead ends: 2669 [2021-10-08 16:02:04,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 2924.8ms TimeCoverageRelationStatistics Valid=545, Invalid=4567, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:02:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2021-10-08 16:02:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2492. [2021-10-08 16:02:04,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2481 states have (on average 2.917372027408303) internal successors, (7238), 2491 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 7238 transitions. [2021-10-08 16:02:04,532 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 7238 transitions. Word has length 27 [2021-10-08 16:02:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:04,532 INFO L470 AbstractCegarLoop]: Abstraction has 2492 states and 7238 transitions. [2021-10-08 16:02:04,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 30 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 7238 transitions. [2021-10-08 16:02:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:02:04,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:04,535 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2021-10-08 16:02:04,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-08 16:02:04,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:04,736 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1858459513, now seen corresponding path program 5 times [2021-10-08 16:02:04,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:04,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391661155] [2021-10-08 16:02:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:04,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:05,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:05,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391661155] [2021-10-08 16:02:05,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391661155] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:05,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769066535] [2021-10-08 16:02:05,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:02:05,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:05,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:05,165 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:05,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-08 16:02:05,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-08 16:02:05,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:05,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:02:05,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:06,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:02:06,174 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:02:06,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:02:06,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-08 16:02:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:06,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769066535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:06,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:06,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2021-10-08 16:02:06,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342196396] [2021-10-08 16:02:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:02:06,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:02:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:02:06,414 INFO L87 Difference]: Start difference. First operand 2492 states and 7238 transitions. Second operand has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:07,152 INFO L93 Difference]: Finished difference Result 2638 states and 7636 transitions. [2021-10-08 16:02:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:02:07,152 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 16:02:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:07,161 INFO L225 Difference]: With dead ends: 2638 [2021-10-08 16:02:07,161 INFO L226 Difference]: Without dead ends: 2638 [2021-10-08 16:02:07,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 632.2ms TimeCoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:02:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-10-08 16:02:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2525. [2021-10-08 16:02:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2514 states have (on average 2.8969769291964997) internal successors, (7283), 2524 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 7283 transitions. [2021-10-08 16:02:07,224 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 7283 transitions. Word has length 27 [2021-10-08 16:02:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:07,224 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 7283 transitions. [2021-10-08 16:02:07,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 7283 transitions. [2021-10-08 16:02:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:02:07,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:07,227 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2021-10-08 16:02:07,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-08 16:02:07,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-08 16:02:07,428 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1902988727, now seen corresponding path program 1 times [2021-10-08 16:02:07,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:07,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918297213] [2021-10-08 16:02:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:07,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 16:02:07,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:07,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918297213] [2021-10-08 16:02:07,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918297213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:07,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109219056] [2021-10-08 16:02:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:07,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:07,496 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:07,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-08 16:02:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:08,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:02:08,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:08,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109219056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:08,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:08,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 21 [2021-10-08 16:02:08,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510168287] [2021-10-08 16:02:08,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:02:08,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:08,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:02:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:02:08,590 INFO L87 Difference]: Start difference. First operand 2525 states and 7283 transitions. Second operand has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:09,017 INFO L93 Difference]: Finished difference Result 3280 states and 8917 transitions. [2021-10-08 16:02:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:02:09,018 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 16:02:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:09,025 INFO L225 Difference]: With dead ends: 3280 [2021-10-08 16:02:09,026 INFO L226 Difference]: Without dead ends: 2735 [2021-10-08 16:02:09,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 341.6ms TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:02:09,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-10-08 16:02:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2141. [2021-10-08 16:02:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2130 states have (on average 2.9990610328638496) internal successors, (6388), 2140 states have internal predecessors, (6388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 6388 transitions. [2021-10-08 16:02:09,092 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 6388 transitions. Word has length 27 [2021-10-08 16:02:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:09,092 INFO L470 AbstractCegarLoop]: Abstraction has 2141 states and 6388 transitions. [2021-10-08 16:02:09,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 6388 transitions. [2021-10-08 16:02:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:02:09,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:09,095 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:09,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:09,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:09,311 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1964835539, now seen corresponding path program 5 times [2021-10-08 16:02:09,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:09,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26270658] [2021-10-08 16:02:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:09,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:09,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:09,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26270658] [2021-10-08 16:02:09,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26270658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:09,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909918880] [2021-10-08 16:02:09,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:02:09,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:09,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:09,764 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:09,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-08 16:02:10,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-08 16:02:10,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:10,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:02:10,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:10,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:02:10,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-08 16:02:10,797 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:02:10,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:02:10,860 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:02:10,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:02:11,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-10-08 16:02:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:11,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909918880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:11,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:11,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-08 16:02:11,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348257042] [2021-10-08 16:02:11,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:02:11,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:02:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:02:11,072 INFO L87 Difference]: Start difference. First operand 2141 states and 6388 transitions. Second operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:12,144 INFO L93 Difference]: Finished difference Result 2660 states and 7220 transitions. [2021-10-08 16:02:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:02:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 16:02:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:12,151 INFO L225 Difference]: With dead ends: 2660 [2021-10-08 16:02:12,151 INFO L226 Difference]: Without dead ends: 2660 [2021-10-08 16:02:12,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 594.1ms TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:02:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-10-08 16:02:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2141. [2021-10-08 16:02:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2130 states have (on average 2.963849765258216) internal successors, (6313), 2140 states have internal predecessors, (6313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 6313 transitions. [2021-10-08 16:02:12,189 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 6313 transitions. Word has length 28 [2021-10-08 16:02:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:12,189 INFO L470 AbstractCegarLoop]: Abstraction has 2141 states and 6313 transitions. [2021-10-08 16:02:12,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 6313 transitions. [2021-10-08 16:02:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:02:12,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:12,191 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:12,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-10-08 16:02:12,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:12,392 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:12,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1964835468, now seen corresponding path program 7 times [2021-10-08 16:02:12,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:12,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928919164] [2021-10-08 16:02:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:12,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:12,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:12,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928919164] [2021-10-08 16:02:12,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928919164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:12,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027563873] [2021-10-08 16:02:12,860 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:02:12,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:12,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:12,862 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:12,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-08 16:02:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:13,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:02:13,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:13,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:13,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-08 16:02:13,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:02:14,042 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:02:14,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-08 16:02:14,112 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-08 16:02:14,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-08 16:02:14,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-08 16:02:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:14,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027563873] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:14,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:14,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2021-10-08 16:02:14,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270086717] [2021-10-08 16:02:14,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:02:14,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:02:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:02:14,315 INFO L87 Difference]: Start difference. First operand 2141 states and 6313 transitions. Second operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:15,489 INFO L93 Difference]: Finished difference Result 2585 states and 7006 transitions. [2021-10-08 16:02:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:02:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 16:02:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:15,495 INFO L225 Difference]: With dead ends: 2585 [2021-10-08 16:02:15,495 INFO L226 Difference]: Without dead ends: 2585 [2021-10-08 16:02:15,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 824.3ms TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:02:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2021-10-08 16:02:15,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2066. [2021-10-08 16:02:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 2055 states have (on average 2.9313868613138685) internal successors, (6024), 2065 states have internal predecessors, (6024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 6024 transitions. [2021-10-08 16:02:15,533 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 6024 transitions. Word has length 28 [2021-10-08 16:02:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:15,533 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 6024 transitions. [2021-10-08 16:02:15,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 6024 transitions. [2021-10-08 16:02:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 16:02:15,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:15,536 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:15,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:15,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:15,737 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:15,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:15,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1086215702, now seen corresponding path program 10 times [2021-10-08 16:02:15,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:15,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463291420] [2021-10-08 16:02:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:15,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:16,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:16,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463291420] [2021-10-08 16:02:16,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463291420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:16,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989986657] [2021-10-08 16:02:16,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:02:16,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:16,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:16,381 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:16,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-08 16:02:17,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:02:17,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:17,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:02:17,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:17,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 137 [2021-10-08 16:02:17,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:02:17,662 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:02:17,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:02:17,724 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:02:17,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:02:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:18,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989986657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:18,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:18,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2021-10-08 16:02:18,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298113577] [2021-10-08 16:02:18,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:02:18,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:02:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1458, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:02:18,192 INFO L87 Difference]: Start difference. First operand 2066 states and 6024 transitions. Second operand has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:20,255 INFO L93 Difference]: Finished difference Result 2782 states and 7408 transitions. [2021-10-08 16:02:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:02:20,255 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 16:02:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:20,263 INFO L225 Difference]: With dead ends: 2782 [2021-10-08 16:02:20,263 INFO L226 Difference]: Without dead ends: 2782 [2021-10-08 16:02:20,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1599.1ms TimeCoverageRelationStatistics Valid=209, Invalid=2241, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:02:20,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2021-10-08 16:02:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2174. [2021-10-08 16:02:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2174 states, 2163 states have (on average 2.968099861303745) internal successors, (6420), 2173 states have internal predecessors, (6420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 6420 transitions. [2021-10-08 16:02:20,322 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 6420 transitions. Word has length 29 [2021-10-08 16:02:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:20,322 INFO L470 AbstractCegarLoop]: Abstraction has 2174 states and 6420 transitions. [2021-10-08 16:02:20,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 6420 transitions. [2021-10-08 16:02:20,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 16:02:20,326 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:20,326 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:20,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:20,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:20,540 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:20,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1086215670, now seen corresponding path program 9 times [2021-10-08 16:02:20,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:20,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047574656] [2021-10-08 16:02:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:20,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:21,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:21,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047574656] [2021-10-08 16:02:21,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047574656] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:21,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117784834] [2021-10-08 16:02:21,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:02:21,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:21,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:21,117 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:21,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-08 16:02:22,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 16:02:22,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:22,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:02:22,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:22,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:02:22,986 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:22,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:02:23,095 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:23,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:02:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:24,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117784834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:24,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:24,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38 [2021-10-08 16:02:24,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409209639] [2021-10-08 16:02:24,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:02:24,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:24,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:02:24,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:02:24,055 INFO L87 Difference]: Start difference. First operand 2174 states and 6420 transitions. Second operand has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:31,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:31,288 INFO L93 Difference]: Finished difference Result 5620 states and 14385 transitions. [2021-10-08 16:02:31,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 16:02:31,289 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 16:02:31,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:31,300 INFO L225 Difference]: With dead ends: 5620 [2021-10-08 16:02:31,300 INFO L226 Difference]: Without dead ends: 5620 [2021-10-08 16:02:31,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 5218.0ms TimeCoverageRelationStatistics Valid=729, Invalid=6581, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:02:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2021-10-08 16:02:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 3200. [2021-10-08 16:02:31,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 3189 states have (on average 3.0156788962057073) internal successors, (9617), 3199 states have internal predecessors, (9617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 9617 transitions. [2021-10-08 16:02:31,405 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 9617 transitions. Word has length 29 [2021-10-08 16:02:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:31,405 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 9617 transitions. [2021-10-08 16:02:31,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:31,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 9617 transitions. [2021-10-08 16:02:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 16:02:31,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:31,410 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2021-10-08 16:02:31,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:31,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:31,626 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:31,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1054902322, now seen corresponding path program 6 times [2021-10-08 16:02:31,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:31,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514820944] [2021-10-08 16:02:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:31,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:31,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:31,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514820944] [2021-10-08 16:02:31,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514820944] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:31,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217308446] [2021-10-08 16:02:31,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:02:31,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:31,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:31,804 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:31,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-08 16:02:33,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 16:02:33,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:02:33,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:33,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217308446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:33,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:33,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2021-10-08 16:02:33,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094167836] [2021-10-08 16:02:33,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:02:33,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:02:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:02:33,711 INFO L87 Difference]: Start difference. First operand 3200 states and 9617 transitions. Second operand has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:34,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:34,076 INFO L93 Difference]: Finished difference Result 3061 states and 9101 transitions. [2021-10-08 16:02:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:02:34,076 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 16:02:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:34,083 INFO L225 Difference]: With dead ends: 3061 [2021-10-08 16:02:34,083 INFO L226 Difference]: Without dead ends: 2420 [2021-10-08 16:02:34,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 512.5ms TimeCoverageRelationStatistics Valid=307, Invalid=1175, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:02:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-10-08 16:02:34,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2420. [2021-10-08 16:02:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2409 states have (on average 3.0514736405147365) internal successors, (7351), 2419 states have internal predecessors, (7351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 7351 transitions. [2021-10-08 16:02:34,126 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 7351 transitions. Word has length 30 [2021-10-08 16:02:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:34,126 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 7351 transitions. [2021-10-08 16:02:34,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 30 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 7351 transitions. [2021-10-08 16:02:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:02:34,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:34,130 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:34,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-08 16:02:34,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:34,345 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash -176181034, now seen corresponding path program 11 times [2021-10-08 16:02:34,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:34,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60829925] [2021-10-08 16:02:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:34,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 49 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:34,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:34,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60829925] [2021-10-08 16:02:34,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60829925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:34,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781406250] [2021-10-08 16:02:34,621 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:02:34,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:34,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:34,622 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:34,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-08 16:02:35,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-08 16:02:35,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:35,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:02:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 64 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:36,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781406250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:36,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:36,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-10-08 16:02:36,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129796757] [2021-10-08 16:02:36,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:02:36,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:02:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:02:36,166 INFO L87 Difference]: Start difference. First operand 2420 states and 7351 transitions. Second operand has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:37,478 INFO L93 Difference]: Finished difference Result 4070 states and 10818 transitions. [2021-10-08 16:02:37,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 16:02:37,478 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-08 16:02:37,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:37,486 INFO L225 Difference]: With dead ends: 4070 [2021-10-08 16:02:37,486 INFO L226 Difference]: Without dead ends: 3996 [2021-10-08 16:02:37,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 1386.7ms TimeCoverageRelationStatistics Valid=1209, Invalid=4341, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:02:37,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2021-10-08 16:02:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 2145. [2021-10-08 16:02:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2134 states have (on average 2.96485473289597) internal successors, (6327), 2144 states have internal predecessors, (6327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 6327 transitions. [2021-10-08 16:02:37,554 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 6327 transitions. Word has length 31 [2021-10-08 16:02:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:37,554 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 6327 transitions. [2021-10-08 16:02:37,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 38 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 6327 transitions. [2021-10-08 16:02:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:02:37,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:37,557 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2021-10-08 16:02:37,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-08 16:02:37,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-08 16:02:37,772 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1028951958, now seen corresponding path program 7 times [2021-10-08 16:02:37,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:37,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150708315] [2021-10-08 16:02:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:37,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:38,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:38,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150708315] [2021-10-08 16:02:38,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150708315] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:38,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98607791] [2021-10-08 16:02:38,197 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:02:38,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:38,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:38,199 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:38,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-08 16:02:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:39,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:02:39,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:39,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:02:39,513 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:02:39,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:02:39,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:02:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:39,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98607791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:39,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:39,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-10-08 16:02:39,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250939866] [2021-10-08 16:02:39,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-08 16:02:39,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-08 16:02:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1112, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:02:39,989 INFO L87 Difference]: Start difference. First operand 2145 states and 6327 transitions. Second operand has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:41,813 INFO L93 Difference]: Finished difference Result 2320 states and 6973 transitions. [2021-10-08 16:02:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:02:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-08 16:02:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:41,820 INFO L225 Difference]: With dead ends: 2320 [2021-10-08 16:02:41,820 INFO L226 Difference]: Without dead ends: 2320 [2021-10-08 16:02:41,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1695.1ms TimeCoverageRelationStatistics Valid=209, Invalid=2547, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:02:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-10-08 16:02:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2231. [2021-10-08 16:02:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2220 states have (on average 2.996846846846847) internal successors, (6653), 2230 states have internal predecessors, (6653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 6653 transitions. [2021-10-08 16:02:41,862 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 6653 transitions. Word has length 31 [2021-10-08 16:02:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:41,862 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 6653 transitions. [2021-10-08 16:02:41,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:41,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 6653 transitions. [2021-10-08 16:02:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:02:41,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:41,865 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2021-10-08 16:02:41,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:42,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:42,066 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:42,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1028951887, now seen corresponding path program 7 times [2021-10-08 16:02:42,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:42,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892832638] [2021-10-08 16:02:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:42,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:42,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:42,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892832638] [2021-10-08 16:02:42,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892832638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:42,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387363491] [2021-10-08 16:02:42,474 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:02:42,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:42,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:42,479 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:42,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-08 16:02:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:43,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:02:43,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:43,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:02:43,699 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:02:43,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:02:44,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:02:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:44,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387363491] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:44,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:44,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-10-08 16:02:44,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780475226] [2021-10-08 16:02:44,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-08 16:02:44,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:44,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-08 16:02:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1112, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:02:44,147 INFO L87 Difference]: Start difference. First operand 2231 states and 6653 transitions. Second operand has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:45,971 INFO L93 Difference]: Finished difference Result 2318 states and 6889 transitions. [2021-10-08 16:02:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:02:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-08 16:02:45,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:45,976 INFO L225 Difference]: With dead ends: 2318 [2021-10-08 16:02:45,976 INFO L226 Difference]: Without dead ends: 2318 [2021-10-08 16:02:45,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1598.7ms TimeCoverageRelationStatistics Valid=209, Invalid=2547, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:02:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-10-08 16:02:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2231. [2021-10-08 16:02:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2220 states have (on average 2.9599099099099098) internal successors, (6571), 2230 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 6571 transitions. [2021-10-08 16:02:46,010 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 6571 transitions. Word has length 31 [2021-10-08 16:02:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:46,011 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 6571 transitions. [2021-10-08 16:02:46,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 6571 transitions. [2021-10-08 16:02:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:02:46,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:46,013 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:46,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:46,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-08 16:02:46,214 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash 628282451, now seen corresponding path program 12 times [2021-10-08 16:02:46,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:46,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276934862] [2021-10-08 16:02:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:46,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:46,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:46,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276934862] [2021-10-08 16:02:46,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276934862] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:46,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671521900] [2021-10-08 16:02:46,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:02:46,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:46,888 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:46,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-08 16:02:48,324 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-08 16:02:48,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:48,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-08 16:02:48,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:48,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:48,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 93 [2021-10-08 16:02:48,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:02:48,920 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:48,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:02:49,034 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:02:49,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:02:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 64 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:50,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671521900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:50,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:02:50,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 42 [2021-10-08 16:02:50,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342221142] [2021-10-08 16:02:50,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-08 16:02:50,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:02:50,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-08 16:02:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:02:50,037 INFO L87 Difference]: Start difference. First operand 2231 states and 6571 transitions. Second operand has 44 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:02:57,750 INFO L93 Difference]: Finished difference Result 6548 states and 16758 transitions. [2021-10-08 16:02:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 16:02:57,751 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:02:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:02:57,763 INFO L225 Difference]: With dead ends: 6548 [2021-10-08 16:02:57,763 INFO L226 Difference]: Without dead ends: 6548 [2021-10-08 16:02:57,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 5551.1ms TimeCoverageRelationStatistics Valid=876, Invalid=8244, Unknown=0, NotChecked=0, Total=9120 [2021-10-08 16:02:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-10-08 16:02:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 3409. [2021-10-08 16:02:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3409 states, 3398 states have (on average 3.046203649205415) internal successors, (10351), 3408 states have internal predecessors, (10351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3409 states to 3409 states and 10351 transitions. [2021-10-08 16:02:57,840 INFO L78 Accepts]: Start accepts. Automaton has 3409 states and 10351 transitions. Word has length 32 [2021-10-08 16:02:57,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:02:57,841 INFO L470 AbstractCegarLoop]: Abstraction has 3409 states and 10351 transitions. [2021-10-08 16:02:57,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:02:57,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3409 states and 10351 transitions. [2021-10-08 16:02:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:02:57,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:02:57,846 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:02:57,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-08 16:02:58,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-08 16:02:58,061 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:02:58,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:02:58,062 INFO L82 PathProgramCache]: Analyzing trace with hash 628282483, now seen corresponding path program 10 times [2021-10-08 16:02:58,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:02:58,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862868872] [2021-10-08 16:02:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:02:58,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:02:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:02:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:02:58,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:02:58,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862868872] [2021-10-08 16:02:58,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862868872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:02:58,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998569532] [2021-10-08 16:02:58,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:02:58,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:02:58,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:02:58,717 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:02:58,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-08 16:02:59,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:02:59,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:02:59,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-08 16:02:59,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:02:59,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:02:59,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:03:00,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:03:00,288 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:03:00,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:03:00,360 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:03:00,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:03:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:01,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998569532] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:01,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:01,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 42 [2021-10-08 16:03:01,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013870311] [2021-10-08 16:03:01,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-08 16:03:01,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:01,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-08 16:03:01,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1790, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:03:01,066 INFO L87 Difference]: Start difference. First operand 3409 states and 10351 transitions. Second operand has 44 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:04,288 INFO L93 Difference]: Finished difference Result 5196 states and 14674 transitions. [2021-10-08 16:03:04,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:03:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:03:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:04,300 INFO L225 Difference]: With dead ends: 5196 [2021-10-08 16:03:04,300 INFO L226 Difference]: Without dead ends: 5196 [2021-10-08 16:03:04,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2619.4ms TimeCoverageRelationStatistics Valid=271, Invalid=3889, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:03:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2021-10-08 16:03:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 3521. [2021-10-08 16:03:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3521 states, 3510 states have (on average 3.033903133903134) internal successors, (10649), 3520 states have internal predecessors, (10649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 10649 transitions. [2021-10-08 16:03:04,397 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 10649 transitions. Word has length 32 [2021-10-08 16:03:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:04,397 INFO L470 AbstractCegarLoop]: Abstraction has 3521 states and 10649 transitions. [2021-10-08 16:03:04,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 43 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 10649 transitions. [2021-10-08 16:03:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:03:04,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:04,402 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:04,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:04,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-08 16:03:04,603 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:04,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1793495255, now seen corresponding path program 6 times [2021-10-08 16:03:04,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:04,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532235897] [2021-10-08 16:03:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:04,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:05,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:05,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532235897] [2021-10-08 16:03:05,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532235897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:05,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564113771] [2021-10-08 16:03:05,125 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:05,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:05,127 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:05,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-08 16:03:06,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 16:03:06,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:06,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:03:06,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:06,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:06,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-08 16:03:06,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:03:06,864 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:06,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:03:07,074 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:07,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:03:07,820 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:03:07,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:03:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 40 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:07,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564113771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:07,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:07,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-10-08 16:03:07,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041718941] [2021-10-08 16:03:07,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-08 16:03:07,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:07,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-08 16:03:07,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1215, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:03:07,830 INFO L87 Difference]: Start difference. First operand 3521 states and 10649 transitions. Second operand has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:11,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:11,975 INFO L93 Difference]: Finished difference Result 6392 states and 17625 transitions. [2021-10-08 16:03:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:03:11,976 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:03:11,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:11,989 INFO L225 Difference]: With dead ends: 6392 [2021-10-08 16:03:11,989 INFO L226 Difference]: Without dead ends: 6392 [2021-10-08 16:03:11,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 3228.4ms TimeCoverageRelationStatistics Valid=413, Invalid=3877, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:03:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6392 states. [2021-10-08 16:03:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6392 to 4694. [2021-10-08 16:03:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4683 states have (on average 3.048900277599829) internal successors, (14278), 4693 states have internal predecessors, (14278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 14278 transitions. [2021-10-08 16:03:12,079 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 14278 transitions. Word has length 32 [2021-10-08 16:03:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:12,080 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 14278 transitions. [2021-10-08 16:03:12,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 14278 transitions. [2021-10-08 16:03:12,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:03:12,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:12,084 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:12,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:12,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:12,285 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:12,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:12,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1793495184, now seen corresponding path program 8 times [2021-10-08 16:03:12,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:12,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636128698] [2021-10-08 16:03:12,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:12,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:12,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:12,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636128698] [2021-10-08 16:03:12,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636128698] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:12,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510152381] [2021-10-08 16:03:12,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:12,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:12,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:12,731 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:12,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-08 16:03:13,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:13,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:13,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-08 16:03:13,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:13,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:13,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:03:14,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:03:14,199 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:03:14,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:03:14,324 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:03:14,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:03:14,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:03:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:14,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510152381] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:14,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:14,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-10-08 16:03:14,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830917489] [2021-10-08 16:03:14,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-08 16:03:14,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-08 16:03:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1252, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:03:14,719 INFO L87 Difference]: Start difference. First operand 4694 states and 14278 transitions. Second operand has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:17,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:17,357 INFO L93 Difference]: Finished difference Result 6140 states and 16967 transitions. [2021-10-08 16:03:17,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:03:17,357 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:03:17,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:17,371 INFO L225 Difference]: With dead ends: 6140 [2021-10-08 16:03:17,371 INFO L226 Difference]: Without dead ends: 6140 [2021-10-08 16:03:17,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1864.6ms TimeCoverageRelationStatistics Valid=213, Invalid=2757, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:03:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2021-10-08 16:03:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 4772. [2021-10-08 16:03:17,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 4761 states have (on average 3.0193236714975846) internal successors, (14375), 4771 states have internal predecessors, (14375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:17,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 14375 transitions. [2021-10-08 16:03:17,471 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 14375 transitions. Word has length 32 [2021-10-08 16:03:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:17,471 INFO L470 AbstractCegarLoop]: Abstraction has 4772 states and 14375 transitions. [2021-10-08 16:03:17,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 14375 transitions. [2021-10-08 16:03:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:03:17,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:17,476 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:17,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-08 16:03:17,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-10-08 16:03:17,677 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:17,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1810897633, now seen corresponding path program 11 times [2021-10-08 16:03:17,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:17,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075240377] [2021-10-08 16:03:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:17,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 64 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:17,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:17,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075240377] [2021-10-08 16:03:17,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075240377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:17,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842078539] [2021-10-08 16:03:17,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:03:17,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:17,970 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:17,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-08 16:03:19,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-08 16:03:19,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:03:19,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 81 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:19,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842078539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:19,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:19,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2021-10-08 16:03:19,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528921916] [2021-10-08 16:03:19,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-08 16:03:19,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-08 16:03:19,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1440, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:03:19,782 INFO L87 Difference]: Start difference. First operand 4772 states and 14375 transitions. Second operand has 43 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:21,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:21,868 INFO L93 Difference]: Finished difference Result 6348 states and 16645 transitions. [2021-10-08 16:03:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-08 16:03:21,868 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:03:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:21,880 INFO L225 Difference]: With dead ends: 6348 [2021-10-08 16:03:21,880 INFO L226 Difference]: Without dead ends: 6266 [2021-10-08 16:03:21,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2183 ImplicationChecksByTransitivity, 2062.7ms TimeCoverageRelationStatistics Valid=2156, Invalid=7944, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:03:21,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2021-10-08 16:03:22,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 3738. [2021-10-08 16:03:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3738 states, 3727 states have (on average 2.9388247920579555) internal successors, (10953), 3737 states have internal predecessors, (10953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3738 states to 3738 states and 10953 transitions. [2021-10-08 16:03:22,065 INFO L78 Accepts]: Start accepts. Automaton has 3738 states and 10953 transitions. Word has length 34 [2021-10-08 16:03:22,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:22,065 INFO L470 AbstractCegarLoop]: Abstraction has 3738 states and 10953 transitions. [2021-10-08 16:03:22,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:22,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3738 states and 10953 transitions. [2021-10-08 16:03:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:03:22,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:22,072 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2021-10-08 16:03:22,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:22,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:22,286 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:22,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:22,289 INFO L82 PathProgramCache]: Analyzing trace with hash -322915434, now seen corresponding path program 8 times [2021-10-08 16:03:22,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:22,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216530117] [2021-10-08 16:03:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:22,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:22,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:22,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216530117] [2021-10-08 16:03:22,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216530117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:22,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394049173] [2021-10-08 16:03:22,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:22,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:22,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:22,544 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:22,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-08 16:03:23,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:23,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:23,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:03:23,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:24,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394049173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:24,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:24,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-10-08 16:03:24,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359836666] [2021-10-08 16:03:24,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-08 16:03:24,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:24,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-08 16:03:24,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:03:24,235 INFO L87 Difference]: Start difference. First operand 3738 states and 10953 transitions. Second operand has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:24,658 INFO L93 Difference]: Finished difference Result 3658 states and 10607 transitions. [2021-10-08 16:03:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:03:24,659 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:03:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:24,665 INFO L225 Difference]: With dead ends: 3658 [2021-10-08 16:03:24,665 INFO L226 Difference]: Without dead ends: 2737 [2021-10-08 16:03:24,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 673.8ms TimeCoverageRelationStatistics Valid=385, Invalid=1507, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:03:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-10-08 16:03:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2737. [2021-10-08 16:03:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2726 states have (on average 2.9515774027879678) internal successors, (8046), 2736 states have internal predecessors, (8046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 8046 transitions. [2021-10-08 16:03:24,721 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 8046 transitions. Word has length 34 [2021-10-08 16:03:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:24,721 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 8046 transitions. [2021-10-08 16:03:24,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 8046 transitions. [2021-10-08 16:03:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 16:03:24,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:24,724 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:24,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-08 16:03:24,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:24,925 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:24,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1956727710, now seen corresponding path program 13 times [2021-10-08 16:03:24,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:24,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427722164] [2021-10-08 16:03:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:24,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:25,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:25,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427722164] [2021-10-08 16:03:25,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427722164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:25,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140933597] [2021-10-08 16:03:25,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:03:25,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:25,738 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:25,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-08 16:03:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:26,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-08 16:03:26,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:03:26,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:03:27,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:03:27,483 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:03:27,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:03:27,559 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:03:27,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:03:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:28,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140933597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:28,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:28,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2021-10-08 16:03:28,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236814606] [2021-10-08 16:03:28,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-08 16:03:28,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-08 16:03:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=2145, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:03:28,312 INFO L87 Difference]: Start difference. First operand 2737 states and 8046 transitions. Second operand has 48 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:31,882 INFO L93 Difference]: Finished difference Result 4601 states and 12590 transitions. [2021-10-08 16:03:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:03:31,883 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 16:03:31,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:31,891 INFO L225 Difference]: With dead ends: 4601 [2021-10-08 16:03:31,891 INFO L226 Difference]: Without dead ends: 4601 [2021-10-08 16:03:31,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 3016.2ms TimeCoverageRelationStatistics Valid=296, Invalid=4674, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:03:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-10-08 16:03:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 2857. [2021-10-08 16:03:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 2846 states have (on average 2.9824314827828533) internal successors, (8488), 2856 states have internal predecessors, (8488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 8488 transitions. [2021-10-08 16:03:31,951 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 8488 transitions. Word has length 35 [2021-10-08 16:03:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:31,951 INFO L470 AbstractCegarLoop]: Abstraction has 2857 states and 8488 transitions. [2021-10-08 16:03:31,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 8488 transitions. [2021-10-08 16:03:31,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 16:03:31,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:31,955 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:31,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-08 16:03:32,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-10-08 16:03:32,170 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:32,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1956727678, now seen corresponding path program 12 times [2021-10-08 16:03:32,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:32,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558163238] [2021-10-08 16:03:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:32,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:32,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:32,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558163238] [2021-10-08 16:03:32,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558163238] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:32,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456823872] [2021-10-08 16:03:32,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:03:32,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:32,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:32,861 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:32,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-08 16:03:34,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-08 16:03:34,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:34,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:03:34,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:35,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:03:35,578 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:35,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:03:35,690 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:35,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:03:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 81 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:36,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456823872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:36,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:36,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46 [2021-10-08 16:03:36,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995095139] [2021-10-08 16:03:36,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-08 16:03:36,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-08 16:03:36,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2060, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:03:36,925 INFO L87 Difference]: Start difference. First operand 2857 states and 8488 transitions. Second operand has 48 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:46,951 INFO L93 Difference]: Finished difference Result 7549 states and 19277 transitions. [2021-10-08 16:03:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 16:03:46,952 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 16:03:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:46,968 INFO L225 Difference]: With dead ends: 7549 [2021-10-08 16:03:46,968 INFO L226 Difference]: Without dead ends: 7549 [2021-10-08 16:03:46,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1971 ImplicationChecksByTransitivity, 7299.7ms TimeCoverageRelationStatistics Valid=975, Invalid=9737, Unknown=0, NotChecked=0, Total=10712 [2021-10-08 16:03:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7549 states. [2021-10-08 16:03:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7549 to 4237. [2021-10-08 16:03:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4226 states have (on average 3.034311405584477) internal successors, (12823), 4236 states have internal predecessors, (12823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:47,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 12823 transitions. [2021-10-08 16:03:47,076 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 12823 transitions. Word has length 35 [2021-10-08 16:03:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:47,076 INFO L470 AbstractCegarLoop]: Abstraction has 4237 states and 12823 transitions. [2021-10-08 16:03:47,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 47 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 12823 transitions. [2021-10-08 16:03:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 16:03:47,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:47,081 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2021-10-08 16:03:47,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:47,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:47,294 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:47,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:47,295 INFO L82 PathProgramCache]: Analyzing trace with hash -468745550, now seen corresponding path program 8 times [2021-10-08 16:03:47,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:47,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655951454] [2021-10-08 16:03:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:47,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:47,793 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:47,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:47,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655951454] [2021-10-08 16:03:47,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655951454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:47,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930287958] [2021-10-08 16:03:47,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:03:47,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:47,796 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:47,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-08 16:03:48,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:03:48,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:48,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:03:48,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:49,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:03:49,388 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:03:49,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:03:49,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:03:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:49,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930287958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:49,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:49,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-10-08 16:03:49,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841953331] [2021-10-08 16:03:49,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:03:49,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:03:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1395, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:03:49,970 INFO L87 Difference]: Start difference. First operand 4237 states and 12823 transitions. Second operand has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:52,134 INFO L93 Difference]: Finished difference Result 4549 states and 13973 transitions. [2021-10-08 16:03:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:03:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 16:03:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:52,144 INFO L225 Difference]: With dead ends: 4549 [2021-10-08 16:03:52,145 INFO L226 Difference]: Without dead ends: 4549 [2021-10-08 16:03:52,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2104.1ms TimeCoverageRelationStatistics Valid=232, Invalid=3190, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:03:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2021-10-08 16:03:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4389. [2021-10-08 16:03:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4389 states, 4378 states have (on average 3.061443581544084) internal successors, (13403), 4388 states have internal predecessors, (13403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 13403 transitions. [2021-10-08 16:03:52,216 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 13403 transitions. Word has length 35 [2021-10-08 16:03:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:52,216 INFO L470 AbstractCegarLoop]: Abstraction has 4389 states and 13403 transitions. [2021-10-08 16:03:52,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 13403 transitions. [2021-10-08 16:03:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 16:03:52,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:52,220 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2021-10-08 16:03:52,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:52,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-10-08 16:03:52,421 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash -468745479, now seen corresponding path program 9 times [2021-10-08 16:03:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:52,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358301084] [2021-10-08 16:03:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:52,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:03:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:52,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:03:52,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358301084] [2021-10-08 16:03:52,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358301084] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:52,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625524218] [2021-10-08 16:03:52,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:03:52,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:52,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:03:52,887 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:03:52,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-08 16:03:54,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 16:03:54,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:03:54,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:03:54,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:03:54,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:03:55,021 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:03:55,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:03:55,905 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:03:55,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:03:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 70 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:03:55,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625524218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:03:55,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:03:55,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-10-08 16:03:55,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361034519] [2021-10-08 16:03:55,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:03:55,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:03:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:03:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:03:55,911 INFO L87 Difference]: Start difference. First operand 4389 states and 13403 transitions. Second operand has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:03:59,368 INFO L93 Difference]: Finished difference Result 4583 states and 13973 transitions. [2021-10-08 16:03:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 16:03:59,369 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 16:03:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:03:59,379 INFO L225 Difference]: With dead ends: 4583 [2021-10-08 16:03:59,380 INFO L226 Difference]: Without dead ends: 4583 [2021-10-08 16:03:59,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 3097.8ms TimeCoverageRelationStatistics Valid=462, Invalid=4508, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:03:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2021-10-08 16:03:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 4427. [2021-10-08 16:03:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4416 states have (on average 3.036005434782609) internal successors, (13407), 4426 states have internal predecessors, (13407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 13407 transitions. [2021-10-08 16:03:59,463 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 13407 transitions. Word has length 35 [2021-10-08 16:03:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:03:59,463 INFO L470 AbstractCegarLoop]: Abstraction has 4427 states and 13407 transitions. [2021-10-08 16:03:59,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:03:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 13407 transitions. [2021-10-08 16:03:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-08 16:03:59,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:03:59,468 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2021-10-08 16:03:59,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-08 16:03:59,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:03:59,681 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:03:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:03:59,682 INFO L82 PathProgramCache]: Analyzing trace with hash -846469843, now seen corresponding path program 7 times [2021-10-08 16:03:59,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:03:59,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687519484] [2021-10-08 16:03:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:03:59,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:03:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:00,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:00,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687519484] [2021-10-08 16:04:00,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687519484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:00,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292636370] [2021-10-08 16:04:00,217 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:04:00,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:00,218 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:00,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-08 16:04:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:01,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:04:01,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:01,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:01,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2021-10-08 16:04:01,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:04:01,827 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:04:01,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:04:01,980 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:04:01,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:02,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:04:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:02,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292636370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:02,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:02,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-10-08 16:04:02,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171421993] [2021-10-08 16:04:02,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-08 16:04:02,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-08 16:04:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1552, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:04:02,509 INFO L87 Difference]: Start difference. First operand 4427 states and 13407 transitions. Second operand has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:05,891 INFO L93 Difference]: Finished difference Result 6491 states and 17781 transitions. [2021-10-08 16:04:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:04:05,891 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-08 16:04:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:05,906 INFO L225 Difference]: With dead ends: 6491 [2021-10-08 16:04:05,906 INFO L226 Difference]: Without dead ends: 6491 [2021-10-08 16:04:05,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2411.3ms TimeCoverageRelationStatistics Valid=235, Invalid=3425, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:04:05,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6491 states. [2021-10-08 16:04:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6491 to 4847. [2021-10-08 16:04:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4836 states have (on average 3.075062034739454) internal successors, (14871), 4846 states have internal predecessors, (14871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 14871 transitions. [2021-10-08 16:04:06,057 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 14871 transitions. Word has length 36 [2021-10-08 16:04:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:06,057 INFO L470 AbstractCegarLoop]: Abstraction has 4847 states and 14871 transitions. [2021-10-08 16:04:06,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 14871 transitions. [2021-10-08 16:04:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-08 16:04:06,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:06,061 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:06,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:06,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-08 16:04:06,262 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:04:06,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:06,264 INFO L82 PathProgramCache]: Analyzing trace with hash -846469772, now seen corresponding path program 9 times [2021-10-08 16:04:06,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:06,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302733519] [2021-10-08 16:04:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:06,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:06,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:06,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302733519] [2021-10-08 16:04:06,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302733519] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:06,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763791380] [2021-10-08 16:04:06,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:04:06,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:06,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:06,814 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:06,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-08 16:04:08,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 16:04:08,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:08,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:04:08,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:08,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:08,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 218 [2021-10-08 16:04:09,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:04:09,453 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:09,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:04:09,682 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:09,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:04:10,502 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:04:10,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:04:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:10,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763791380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:10,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:10,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2021-10-08 16:04:10,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660036523] [2021-10-08 16:04:10,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-08 16:04:10,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-08 16:04:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:04:10,507 INFO L87 Difference]: Start difference. First operand 4847 states and 14871 transitions. Second operand has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:15,050 INFO L93 Difference]: Finished difference Result 7464 states and 20588 transitions. [2021-10-08 16:04:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:04:15,050 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-08 16:04:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:15,067 INFO L225 Difference]: With dead ends: 7464 [2021-10-08 16:04:15,067 INFO L226 Difference]: Without dead ends: 7464 [2021-10-08 16:04:15,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 3576.9ms TimeCoverageRelationStatistics Valid=475, Invalid=4781, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:04:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2021-10-08 16:04:15,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 5673. [2021-10-08 16:04:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 5662 states have (on average 3.028611797951254) internal successors, (17148), 5672 states have internal predecessors, (17148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 17148 transitions. [2021-10-08 16:04:15,169 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 17148 transitions. Word has length 36 [2021-10-08 16:04:15,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:15,169 INFO L470 AbstractCegarLoop]: Abstraction has 5673 states and 17148 transitions. [2021-10-08 16:04:15,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.775) internal successors, (71), 40 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:15,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 17148 transitions. [2021-10-08 16:04:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-08 16:04:15,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:15,174 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:15,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:15,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-08 16:04:15,376 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:04:15,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:15,377 INFO L82 PathProgramCache]: Analyzing trace with hash 780401998, now seen corresponding path program 14 times [2021-10-08 16:04:15,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:15,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185160190] [2021-10-08 16:04:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:15,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 81 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:15,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:15,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185160190] [2021-10-08 16:04:15,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185160190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:15,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709747621] [2021-10-08 16:04:15,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:04:15,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:15,715 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:15,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-08 16:04:17,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:04:17,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:17,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:04:17,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 100 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:17,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709747621] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:17,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:17,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-10-08 16:04:17,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914666606] [2021-10-08 16:04:17,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-08 16:04:17,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:17,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-08 16:04:17,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1727, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:04:17,812 INFO L87 Difference]: Start difference. First operand 5673 states and 17148 transitions. Second operand has 47 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:20,195 INFO L93 Difference]: Finished difference Result 7527 states and 19825 transitions. [2021-10-08 16:04:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-08 16:04:20,196 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-08 16:04:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:20,208 INFO L225 Difference]: With dead ends: 7527 [2021-10-08 16:04:20,208 INFO L226 Difference]: Without dead ends: 7437 [2021-10-08 16:04:20,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 2372.1ms TimeCoverageRelationStatistics Valid=2441, Invalid=9331, Unknown=0, NotChecked=0, Total=11772 [2021-10-08 16:04:20,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7437 states. [2021-10-08 16:04:20,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7437 to 4405. [2021-10-08 16:04:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4405 states, 4394 states have (on average 2.946517979062358) internal successors, (12947), 4404 states have internal predecessors, (12947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 12947 transitions. [2021-10-08 16:04:20,287 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 12947 transitions. Word has length 37 [2021-10-08 16:04:20,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:20,287 INFO L470 AbstractCegarLoop]: Abstraction has 4405 states and 12947 transitions. [2021-10-08 16:04:20,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 46 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 12947 transitions. [2021-10-08 16:04:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 16:04:20,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:20,292 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:20,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-08 16:04:20,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:20,492 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:04:20,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:20,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1430532341, now seen corresponding path program 15 times [2021-10-08 16:04:20,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:20,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376967467] [2021-10-08 16:04:20,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:20,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:21,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:21,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376967467] [2021-10-08 16:04:21,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376967467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:21,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267546784] [2021-10-08 16:04:21,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:04:21,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:21,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:21,265 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:21,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-08 16:04:23,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-08 16:04:23,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:23,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-08 16:04:23,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:23,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:23,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-08 16:04:23,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:04:24,070 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:24,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:04:24,183 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:24,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:04:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:25,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267546784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:25,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:25,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 50 [2021-10-08 16:04:25,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268978794] [2021-10-08 16:04:25,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-08 16:04:25,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:25,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-08 16:04:25,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2427, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:04:25,422 INFO L87 Difference]: Start difference. First operand 4405 states and 12947 transitions. Second operand has 52 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:37,347 INFO L93 Difference]: Finished difference Result 10777 states and 27523 transitions. [2021-10-08 16:04:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-08 16:04:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 16:04:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:37,369 INFO L225 Difference]: With dead ends: 10777 [2021-10-08 16:04:37,369 INFO L226 Difference]: Without dead ends: 10777 [2021-10-08 16:04:37,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3008 ImplicationChecksByTransitivity, 8336.1ms TimeCoverageRelationStatistics Valid=1301, Invalid=13705, Unknown=0, NotChecked=0, Total=15006 [2021-10-08 16:04:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2021-10-08 16:04:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 6055. [2021-10-08 16:04:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 6044 states have (on average 3.026141628060887) internal successors, (18290), 6054 states have internal predecessors, (18290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 18290 transitions. [2021-10-08 16:04:37,500 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 18290 transitions. Word has length 38 [2021-10-08 16:04:37,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:37,501 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 18290 transitions. [2021-10-08 16:04:37,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:37,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 18290 transitions. [2021-10-08 16:04:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 16:04:37,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:37,506 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:04:37,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:37,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:37,707 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:04:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:37,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1430532309, now seen corresponding path program 13 times [2021-10-08 16:04:37,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:37,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221877529] [2021-10-08 16:04:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:37,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:38,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:38,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221877529] [2021-10-08 16:04:38,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221877529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:38,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086174900] [2021-10-08 16:04:38,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:04:38,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:38,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:38,562 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:38,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-08 16:04:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:39,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-08 16:04:39,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:39,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:04:39,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 135 [2021-10-08 16:04:40,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:04:40,586 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:04:40,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:04:40,665 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:04:40,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:04:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:41,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086174900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:41,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:41,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 50 [2021-10-08 16:04:41,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562212424] [2021-10-08 16:04:41,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-08 16:04:41,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:41,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-08 16:04:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=2532, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:04:41,668 INFO L87 Difference]: Start difference. First operand 6055 states and 18290 transitions. Second operand has 52 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:46,323 INFO L93 Difference]: Finished difference Result 8375 states and 23854 transitions. [2021-10-08 16:04:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:04:46,323 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 16:04:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:46,343 INFO L225 Difference]: With dead ends: 8375 [2021-10-08 16:04:46,343 INFO L226 Difference]: Without dead ends: 8375 [2021-10-08 16:04:46,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 3608.1ms TimeCoverageRelationStatistics Valid=321, Invalid=5531, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:04:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8375 states. [2021-10-08 16:04:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8375 to 6187. [2021-10-08 16:04:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6187 states, 6176 states have (on average 3.01910621761658) internal successors, (18646), 6186 states have internal predecessors, (18646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6187 states to 6187 states and 18646 transitions. [2021-10-08 16:04:46,479 INFO L78 Accepts]: Start accepts. Automaton has 6187 states and 18646 transitions. Word has length 38 [2021-10-08 16:04:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:46,479 INFO L470 AbstractCegarLoop]: Abstraction has 6187 states and 18646 transitions. [2021-10-08 16:04:46,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.4901960784313726) internal successors, (76), 51 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 6187 states and 18646 transitions. [2021-10-08 16:04:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 16:04:46,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:46,485 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2021-10-08 16:04:46,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-08 16:04:46,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-10-08 16:04:46,686 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:04:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:46,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1456727033, now seen corresponding path program 9 times [2021-10-08 16:04:46,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:46,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466348408] [2021-10-08 16:04:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:46,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:47,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:47,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466348408] [2021-10-08 16:04:47,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466348408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:47,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874327380] [2021-10-08 16:04:47,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:04:47,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:47,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:47,014 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:47,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-08 16:04:48,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-08 16:04:48,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:48,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:04:48,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:49,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874327380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:49,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:49,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2021-10-08 16:04:49,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988690353] [2021-10-08 16:04:49,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:04:49,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:04:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:04:49,264 INFO L87 Difference]: Start difference. First operand 6187 states and 18646 transitions. Second operand has 39 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:49,779 INFO L93 Difference]: Finished difference Result 6099 states and 18290 transitions. [2021-10-08 16:04:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:04:49,780 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 16:04:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:49,792 INFO L225 Difference]: With dead ends: 6099 [2021-10-08 16:04:49,792 INFO L226 Difference]: Without dead ends: 5058 [2021-10-08 16:04:49,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 748.3ms TimeCoverageRelationStatistics Valid=472, Invalid=1880, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:04:49,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2021-10-08 16:04:49,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 5058. [2021-10-08 16:04:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 5047 states have (on average 3.049336239350109) internal successors, (15390), 5057 states have internal predecessors, (15390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 15390 transitions. [2021-10-08 16:04:49,881 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 15390 transitions. Word has length 38 [2021-10-08 16:04:49,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:49,881 INFO L470 AbstractCegarLoop]: Abstraction has 5058 states and 15390 transitions. [2021-10-08 16:04:49,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:49,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 15390 transitions. [2021-10-08 16:04:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-08 16:04:49,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:49,887 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2021-10-08 16:04:49,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-08 16:04:50,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:50,094 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:04:50,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:50,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1276214806, now seen corresponding path program 10 times [2021-10-08 16:04:50,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:50,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358671818] [2021-10-08 16:04:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:50,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:50,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:50,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358671818] [2021-10-08 16:04:50,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358671818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:50,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712016648] [2021-10-08 16:04:50,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:04:50,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:50,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:50,619 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:50,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-08 16:04:51,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:04:51,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:51,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:04:51,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:51,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:04:52,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:04:52,517 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:04:52,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:04:53,615 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:04:53,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:04:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 92 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:53,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712016648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:53,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:04:53,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2021-10-08 16:04:53,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646393708] [2021-10-08 16:04:53,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-08 16:04:53,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:04:53,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-08 16:04:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:04:53,622 INFO L87 Difference]: Start difference. First operand 5058 states and 15390 transitions. Second operand has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:04:57,586 INFO L93 Difference]: Finished difference Result 5395 states and 16636 transitions. [2021-10-08 16:04:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:04:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-08 16:04:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:04:57,600 INFO L225 Difference]: With dead ends: 5395 [2021-10-08 16:04:57,600 INFO L226 Difference]: Without dead ends: 5395 [2021-10-08 16:04:57,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 3290.7ms TimeCoverageRelationStatistics Valid=528, Invalid=5478, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:04:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5395 states. [2021-10-08 16:04:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5395 to 5215. [2021-10-08 16:04:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5204 states have (on average 3.0751345119139124) internal successors, (16003), 5214 states have internal predecessors, (16003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 16003 transitions. [2021-10-08 16:04:57,703 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 16003 transitions. Word has length 39 [2021-10-08 16:04:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:04:57,703 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 16003 transitions. [2021-10-08 16:04:57,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:04:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 16003 transitions. [2021-10-08 16:04:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-08 16:04:57,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:04:57,709 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2021-10-08 16:04:57,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-10-08 16:04:57,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:57,909 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:04:57,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:04:57,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1276214735, now seen corresponding path program 10 times [2021-10-08 16:04:57,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:04:57,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001822502] [2021-10-08 16:04:57,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:04:57,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:04:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:04:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:04:58,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:04:58,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001822502] [2021-10-08 16:04:58,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001822502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:04:58,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110569334] [2021-10-08 16:04:58,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:04:58,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:04:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:04:58,503 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:04:58,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-08 16:04:59,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:04:59,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:04:59,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:04:59,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:04:59,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2021-10-08 16:05:00,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:05:00,514 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:00,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:05:01,529 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:05:01,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:05:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 92 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:01,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110569334] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:01,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:01,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41 [2021-10-08 16:05:01,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21082136] [2021-10-08 16:05:01,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-08 16:05:01,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-08 16:05:01,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1641, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:05:01,536 INFO L87 Difference]: Start difference. First operand 5215 states and 16003 transitions. Second operand has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:04,841 INFO L93 Difference]: Finished difference Result 5391 states and 16476 transitions. [2021-10-08 16:05:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:05:04,842 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-08 16:05:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:04,853 INFO L225 Difference]: With dead ends: 5391 [2021-10-08 16:05:04,854 INFO L226 Difference]: Without dead ends: 5391 [2021-10-08 16:05:04,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 3109.6ms TimeCoverageRelationStatistics Valid=528, Invalid=5478, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:05:04,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2021-10-08 16:05:04,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 5214. [2021-10-08 16:05:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5203 states have (on average 3.045550643859312) internal successors, (15846), 5213 states have internal predecessors, (15846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 15846 transitions. [2021-10-08 16:05:04,948 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 15846 transitions. Word has length 39 [2021-10-08 16:05:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:04,948 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 15846 transitions. [2021-10-08 16:05:04,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 42 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:04,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 15846 transitions. [2021-10-08 16:05:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 16:05:04,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:04,953 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:04,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:05,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:05,154 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:05:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash -351989289, now seen corresponding path program 14 times [2021-10-08 16:05:05,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:05,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064740825] [2021-10-08 16:05:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:05,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 100 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:05,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:05,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064740825] [2021-10-08 16:05:05,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064740825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:05,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469745784] [2021-10-08 16:05:05,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:05:05,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:05,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:05,617 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:05,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-08 16:05:07,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:05:07,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:07,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:05:07,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 121 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:08,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469745784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:08,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:08,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-10-08 16:05:08,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869239536] [2021-10-08 16:05:08,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-08 16:05:08,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-08 16:05:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2040, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:05:08,103 INFO L87 Difference]: Start difference. First operand 5214 states and 15846 transitions. Second operand has 51 states, 50 states have (on average 1.54) internal successors, (77), 50 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:10,788 INFO L93 Difference]: Finished difference Result 8542 states and 22494 transitions. [2021-10-08 16:05:10,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-08 16:05:10,789 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.54) internal successors, (77), 50 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-08 16:05:10,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:10,806 INFO L225 Difference]: With dead ends: 8542 [2021-10-08 16:05:10,806 INFO L226 Difference]: Without dead ends: 8444 [2021-10-08 16:05:10,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3066 ImplicationChecksByTransitivity, 2817.9ms TimeCoverageRelationStatistics Valid=2894, Invalid=11148, Unknown=0, NotChecked=0, Total=14042 [2021-10-08 16:05:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8444 states. [2021-10-08 16:05:10,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8444 to 3772. [2021-10-08 16:05:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 3761 states have (on average 2.9494815208721086) internal successors, (11093), 3771 states have internal predecessors, (11093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 11093 transitions. [2021-10-08 16:05:10,903 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 11093 transitions. Word has length 40 [2021-10-08 16:05:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:10,903 INFO L470 AbstractCegarLoop]: Abstraction has 3772 states and 11093 transitions. [2021-10-08 16:05:10,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.54) internal successors, (77), 50 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 11093 transitions. [2021-10-08 16:05:10,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 16:05:10,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:10,907 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:10,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:11,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:11,108 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:05:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:11,109 INFO L82 PathProgramCache]: Analyzing trace with hash -125912535, now seen corresponding path program 8 times [2021-10-08 16:05:11,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:11,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126673136] [2021-10-08 16:05:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:11,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:11,823 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:11,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:11,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126673136] [2021-10-08 16:05:11,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126673136] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:11,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808409264] [2021-10-08 16:05:11,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:05:11,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:11,827 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:11,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-08 16:05:13,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:05:13,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:13,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-08 16:05:13,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:13,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:05:13,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2021-10-08 16:05:13,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:05:14,023 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:14,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:05:14,245 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:14,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:05:15,211 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:05:15,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:05:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 77 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:15,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808409264] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:15,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:15,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-10-08 16:05:15,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065819744] [2021-10-08 16:05:15,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-08 16:05:15,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-08 16:05:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1817, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:05:15,217 INFO L87 Difference]: Start difference. First operand 3772 states and 11093 transitions. Second operand has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:20,570 INFO L93 Difference]: Finished difference Result 6548 states and 18078 transitions. [2021-10-08 16:05:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:05:20,571 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-08 16:05:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:20,584 INFO L225 Difference]: With dead ends: 6548 [2021-10-08 16:05:20,584 INFO L226 Difference]: Without dead ends: 6548 [2021-10-08 16:05:20,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 4268.4ms TimeCoverageRelationStatistics Valid=541, Invalid=5779, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 16:05:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-10-08 16:05:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 5143. [2021-10-08 16:05:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5132 states have (on average 2.9832424006235385) internal successors, (15310), 5142 states have internal predecessors, (15310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 15310 transitions. [2021-10-08 16:05:20,665 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 15310 transitions. Word has length 40 [2021-10-08 16:05:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:20,665 INFO L470 AbstractCegarLoop]: Abstraction has 5143 states and 15310 transitions. [2021-10-08 16:05:20,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:20,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 15310 transitions. [2021-10-08 16:05:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 16:05:20,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:20,669 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:20,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:20,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:20,870 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:05:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:20,871 INFO L82 PathProgramCache]: Analyzing trace with hash -125912464, now seen corresponding path program 10 times [2021-10-08 16:05:20,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:20,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337469641] [2021-10-08 16:05:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:20,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:21,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:21,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337469641] [2021-10-08 16:05:21,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337469641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:21,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623662803] [2021-10-08 16:05:21,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:05:21,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:21,509 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:21,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-08 16:05:22,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:05:22,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:23,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-08 16:05:23,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:23,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-08 16:05:23,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:05:23,481 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:05:23,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:05:23,609 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:05:23,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:05:24,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:05:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:24,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623662803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:24,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:24,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2021-10-08 16:05:24,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610477935] [2021-10-08 16:05:24,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-08 16:05:24,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:24,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-08 16:05:24,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1874, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:05:24,204 INFO L87 Difference]: Start difference. First operand 5143 states and 15310 transitions. Second operand has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:27,132 INFO L93 Difference]: Finished difference Result 6382 states and 17673 transitions. [2021-10-08 16:05:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:05:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-08 16:05:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:27,148 INFO L225 Difference]: With dead ends: 6382 [2021-10-08 16:05:27,149 INFO L226 Difference]: Without dead ends: 6382 [2021-10-08 16:05:27,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1995.4ms TimeCoverageRelationStatistics Valid=215, Invalid=2977, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:05:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2021-10-08 16:05:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 5278. [2021-10-08 16:05:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5267 states have (on average 2.9588000759445605) internal successors, (15584), 5277 states have internal predecessors, (15584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 15584 transitions. [2021-10-08 16:05:27,243 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 15584 transitions. Word has length 40 [2021-10-08 16:05:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:27,243 INFO L470 AbstractCegarLoop]: Abstraction has 5278 states and 15584 transitions. [2021-10-08 16:05:27,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.7954545454545454) internal successors, (79), 44 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 15584 transitions. [2021-10-08 16:05:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-08 16:05:27,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:27,247 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:27,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-08 16:05:27,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-10-08 16:05:27,449 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:05:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1321568986, now seen corresponding path program 16 times [2021-10-08 16:05:27,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:27,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698873652] [2021-10-08 16:05:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:27,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:28,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:28,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698873652] [2021-10-08 16:05:28,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698873652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:28,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624584185] [2021-10-08 16:05:28,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:05:28,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:28,358 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:28,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-08 16:05:30,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:05:30,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:30,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-08 16:05:30,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:30,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:05:30,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-08 16:05:30,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:05:30,868 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:05:30,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:05:30,947 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:05:30,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:05:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:31,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624584185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:31,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:31,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 54 [2021-10-08 16:05:31,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273238567] [2021-10-08 16:05:31,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-08 16:05:31,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-08 16:05:31,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2951, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:05:31,904 INFO L87 Difference]: Start difference. First operand 5278 states and 15584 transitions. Second operand has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:36,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:36,703 INFO L93 Difference]: Finished difference Result 8026 states and 22270 transitions. [2021-10-08 16:05:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:05:36,706 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-08 16:05:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:36,724 INFO L225 Difference]: With dead ends: 8026 [2021-10-08 16:05:36,725 INFO L226 Difference]: Without dead ends: 8026 [2021-10-08 16:05:36,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 3834.6ms TimeCoverageRelationStatistics Valid=346, Invalid=6460, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:05:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2021-10-08 16:05:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 5422. [2021-10-08 16:05:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5422 states, 5411 states have (on average 2.9787469968582516) internal successors, (16118), 5421 states have internal predecessors, (16118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 16118 transitions. [2021-10-08 16:05:36,880 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 16118 transitions. Word has length 41 [2021-10-08 16:05:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:36,880 INFO L470 AbstractCegarLoop]: Abstraction has 5422 states and 16118 transitions. [2021-10-08 16:05:36,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 16118 transitions. [2021-10-08 16:05:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-08 16:05:36,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:36,885 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:36,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-08 16:05:37,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:37,086 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:05:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:37,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1321569018, now seen corresponding path program 15 times [2021-10-08 16:05:37,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:37,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352165836] [2021-10-08 16:05:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:37,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:37,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:37,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352165836] [2021-10-08 16:05:37,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352165836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:37,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285408450] [2021-10-08 16:05:37,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:05:37,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:37,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:37,949 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:37,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-08 16:05:40,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-08 16:05:40,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:05:40,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:05:40,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:05:41,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:05:41,270 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:41,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:05:41,397 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:05:41,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:05:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 121 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:42,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285408450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:42,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:05:42,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 54 [2021-10-08 16:05:42,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606623432] [2021-10-08 16:05:42,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-08 16:05:42,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:05:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-08 16:05:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:05:42,882 INFO L87 Difference]: Start difference. First operand 5422 states and 16118 transitions. Second operand has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:05:58,035 INFO L93 Difference]: Finished difference Result 12894 states and 32823 transitions. [2021-10-08 16:05:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-08 16:05:58,035 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-08 16:05:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:05:58,058 INFO L225 Difference]: With dead ends: 12894 [2021-10-08 16:05:58,058 INFO L226 Difference]: Without dead ends: 12894 [2021-10-08 16:05:58,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 10494.4ms TimeCoverageRelationStatistics Valid=1473, Invalid=16083, Unknown=0, NotChecked=0, Total=17556 [2021-10-08 16:05:58,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12894 states. [2021-10-08 16:05:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12894 to 7366. [2021-10-08 16:05:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7366 states, 7355 states have (on average 3.0299116247450715) internal successors, (22285), 7365 states have internal predecessors, (22285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:58,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 22285 transitions. [2021-10-08 16:05:58,207 INFO L78 Accepts]: Start accepts. Automaton has 7366 states and 22285 transitions. Word has length 41 [2021-10-08 16:05:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:05:58,208 INFO L470 AbstractCegarLoop]: Abstraction has 7366 states and 22285 transitions. [2021-10-08 16:05:58,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:05:58,208 INFO L276 IsEmpty]: Start isEmpty. Operand 7366 states and 22285 transitions. [2021-10-08 16:05:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-08 16:05:58,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:05:58,214 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:05:58,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-10-08 16:05:58,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:58,415 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:05:58,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:05:58,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1282468410, now seen corresponding path program 17 times [2021-10-08 16:05:58,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:05:58,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023112493] [2021-10-08 16:05:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:05:58,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:05:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:05:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 121 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:05:58,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:05:58,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023112493] [2021-10-08 16:05:58,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023112493] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:05:58,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703737181] [2021-10-08 16:05:58,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:05:58,849 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:05:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:05:58,852 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:05:58,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-08 16:06:00,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-08 16:06:00,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:00,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:06:00,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 144 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:01,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703737181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:01,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:01,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2021-10-08 16:06:01,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538578637] [2021-10-08 16:06:01,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-08 16:06:01,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-08 16:06:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=591, Invalid=2379, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:06:01,687 INFO L87 Difference]: Start difference. First operand 7366 states and 22285 transitions. Second operand has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 54 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:05,479 INFO L93 Difference]: Finished difference Result 11934 states and 31133 transitions. [2021-10-08 16:06:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-08 16:06:05,479 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 54 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-08 16:06:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:05,502 INFO L225 Difference]: With dead ends: 11934 [2021-10-08 16:06:05,503 INFO L226 Difference]: Without dead ends: 11828 [2021-10-08 16:06:05,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5512 ImplicationChecksByTransitivity, 3787.5ms TimeCoverageRelationStatistics Valid=4509, Invalid=17841, Unknown=0, NotChecked=0, Total=22350 [2021-10-08 16:06:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2021-10-08 16:06:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 5696. [2021-10-08 16:06:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5696 states, 5685 states have (on average 2.948636763412489) internal successors, (16763), 5695 states have internal predecessors, (16763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 16763 transitions. [2021-10-08 16:06:05,643 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 16763 transitions. Word has length 43 [2021-10-08 16:06:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:05,643 INFO L470 AbstractCegarLoop]: Abstraction has 5696 states and 16763 transitions. [2021-10-08 16:06:05,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.537037037037037) internal successors, (83), 54 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 16763 transitions. [2021-10-08 16:06:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-08 16:06:05,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:05,649 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2021-10-08 16:06:05,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:05,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:05,850 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:06:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:05,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1310256690, now seen corresponding path program 11 times [2021-10-08 16:06:05,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:05,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557870677] [2021-10-08 16:06:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:05,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:06,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:06,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557870677] [2021-10-08 16:06:06,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557870677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:06,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357178172] [2021-10-08 16:06:06,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:06:06,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:06,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:06,606 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:06,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-08 16:06:08,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-08 16:06:08,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:08,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-08 16:06:08,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:08,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:06:08,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:06:08,818 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:06:08,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:06:09,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:06:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:09,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357178172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:09,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:09,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-10-08 16:06:09,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806142876] [2021-10-08 16:06:09,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-08 16:06:09,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:09,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-08 16:06:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2046, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:06:09,512 INFO L87 Difference]: Start difference. First operand 5696 states and 16763 transitions. Second operand has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:12,168 INFO L93 Difference]: Finished difference Result 6038 states and 17876 transitions. [2021-10-08 16:06:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:06:12,169 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-08 16:06:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:12,182 INFO L225 Difference]: With dead ends: 6038 [2021-10-08 16:06:12,182 INFO L226 Difference]: Without dead ends: 6038 [2021-10-08 16:06:12,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2197.8ms TimeCoverageRelationStatistics Valid=237, Invalid=3423, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:06:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2021-10-08 16:06:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 5826. [2021-10-08 16:06:12,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5826 states, 5815 states have (on average 2.9666380051590715) internal successors, (17251), 5825 states have internal predecessors, (17251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 17251 transitions. [2021-10-08 16:06:12,281 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 17251 transitions. Word has length 43 [2021-10-08 16:06:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:12,282 INFO L470 AbstractCegarLoop]: Abstraction has 5826 states and 17251 transitions. [2021-10-08 16:06:12,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 17251 transitions. [2021-10-08 16:06:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-08 16:06:12,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:12,287 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2021-10-08 16:06:12,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-08 16:06:12,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:12,488 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:06:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:12,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1310256761, now seen corresponding path program 11 times [2021-10-08 16:06:12,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:12,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406178361] [2021-10-08 16:06:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:12,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:13,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:13,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406178361] [2021-10-08 16:06:13,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406178361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:13,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624138169] [2021-10-08 16:06:13,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:06:13,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:13,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:13,111 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:13,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-08 16:06:14,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-08 16:06:14,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:14,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-08 16:06:14,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:14,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2021-10-08 16:06:15,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:06:15,367 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:06:15,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:06:16,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:06:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:16,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624138169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:16,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:16,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-10-08 16:06:16,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660649346] [2021-10-08 16:06:16,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-08 16:06:16,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-08 16:06:16,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2046, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:06:16,150 INFO L87 Difference]: Start difference. First operand 5826 states and 17251 transitions. Second operand has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:18,503 INFO L93 Difference]: Finished difference Result 6034 states and 17750 transitions. [2021-10-08 16:06:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:06:18,504 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-08 16:06:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:18,515 INFO L225 Difference]: With dead ends: 6034 [2021-10-08 16:06:18,515 INFO L226 Difference]: Without dead ends: 6034 [2021-10-08 16:06:18,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2116.6ms TimeCoverageRelationStatistics Valid=232, Invalid=3308, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:06:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2021-10-08 16:06:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 5826. [2021-10-08 16:06:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5826 states, 5815 states have (on average 2.945657781599312) internal successors, (17129), 5825 states have internal predecessors, (17129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:18,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 17129 transitions. [2021-10-08 16:06:18,609 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 17129 transitions. Word has length 43 [2021-10-08 16:06:18,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:18,609 INFO L470 AbstractCegarLoop]: Abstraction has 5826 states and 17129 transitions. [2021-10-08 16:06:18,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.8478260869565217) internal successors, (85), 46 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 17129 transitions. [2021-10-08 16:06:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-08 16:06:18,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:18,615 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:18,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:18,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:18,815 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:06:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:18,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1550606985, now seen corresponding path program 11 times [2021-10-08 16:06:18,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:18,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092256746] [2021-10-08 16:06:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:18,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:19,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:19,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092256746] [2021-10-08 16:06:19,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092256746] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:19,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966866130] [2021-10-08 16:06:19,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:06:19,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:19,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:19,107 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:19,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-08 16:06:20,810 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-08 16:06:20,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:20,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:06:20,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:21,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966866130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:21,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:21,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2021-10-08 16:06:21,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924858020] [2021-10-08 16:06:21,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-08 16:06:21,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-08 16:06:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1440, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:06:21,695 INFO L87 Difference]: Start difference. First operand 5826 states and 17129 transitions. Second operand has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:22,282 INFO L93 Difference]: Finished difference Result 5688 states and 16616 transitions. [2021-10-08 16:06:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:06:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-08 16:06:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:22,291 INFO L225 Difference]: With dead ends: 5688 [2021-10-08 16:06:22,291 INFO L226 Difference]: Without dead ends: 4411 [2021-10-08 16:06:22,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 990.0ms TimeCoverageRelationStatistics Valid=568, Invalid=2294, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:06:22,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2021-10-08 16:06:22,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 4411. [2021-10-08 16:06:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4411 states, 4400 states have (on average 2.9620454545454544) internal successors, (13033), 4410 states have internal predecessors, (13033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4411 states to 4411 states and 13033 transitions. [2021-10-08 16:06:22,357 INFO L78 Accepts]: Start accepts. Automaton has 4411 states and 13033 transitions. Word has length 43 [2021-10-08 16:06:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:22,357 INFO L470 AbstractCegarLoop]: Abstraction has 4411 states and 13033 transitions. [2021-10-08 16:06:22,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 42 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:22,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4411 states and 13033 transitions. [2021-10-08 16:06:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 16:06:22,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:22,361 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:22,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:22,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:22,565 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:06:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:22,566 INFO L82 PathProgramCache]: Analyzing trace with hash -287316541, now seen corresponding path program 18 times [2021-10-08 16:06:22,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:22,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987688158] [2021-10-08 16:06:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:22,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:23,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:23,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987688158] [2021-10-08 16:06:23,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987688158] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:23,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623276668] [2021-10-08 16:06:23,814 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:06:23,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:23,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:23,816 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:23,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-08 16:06:26,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-08 16:06:26,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:26,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:06:26,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:26,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:26,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2021-10-08 16:06:27,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:06:27,626 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:06:27,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:06:27,736 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:06:27,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:06:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 144 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:29,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623276668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:29,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:29,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2021-10-08 16:06:29,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776003305] [2021-10-08 16:06:29,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-08 16:06:29,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-08 16:06:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=3239, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:06:29,315 INFO L87 Difference]: Start difference. First operand 4411 states and 13033 transitions. Second operand has 60 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 59 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:44,803 INFO L93 Difference]: Finished difference Result 14419 states and 36778 transitions. [2021-10-08 16:06:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-08 16:06:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 59 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-08 16:06:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:44,834 INFO L225 Difference]: With dead ends: 14419 [2021-10-08 16:06:44,834 INFO L226 Difference]: Without dead ends: 14419 [2021-10-08 16:06:44,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6178 ImplicationChecksByTransitivity, 10791.6ms TimeCoverageRelationStatistics Valid=1891, Invalid=21979, Unknown=0, NotChecked=0, Total=23870 [2021-10-08 16:06:44,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14419 states. [2021-10-08 16:06:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14419 to 6559. [2021-10-08 16:06:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 6548 states have (on average 3.052382406841784) internal successors, (19987), 6558 states have internal predecessors, (19987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 19987 transitions. [2021-10-08 16:06:45,009 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 19987 transitions. Word has length 44 [2021-10-08 16:06:45,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:45,009 INFO L470 AbstractCegarLoop]: Abstraction has 6559 states and 19987 transitions. [2021-10-08 16:06:45,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 59 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 19987 transitions. [2021-10-08 16:06:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 16:06:45,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:45,016 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:45,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:45,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:45,216 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:06:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:45,217 INFO L82 PathProgramCache]: Analyzing trace with hash -287316509, now seen corresponding path program 16 times [2021-10-08 16:06:45,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:45,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437833643] [2021-10-08 16:06:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:45,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:46,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:46,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437833643] [2021-10-08 16:06:46,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437833643] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:46,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305206499] [2021-10-08 16:06:46,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:06:46,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:46,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:46,468 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:46,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-08 16:06:48,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:06:48,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:48,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-08 16:06:48,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:48,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:06:48,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:06:48,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:06:48,983 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:06:48,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:06:49,061 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:06:49,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:06:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:50,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305206499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:50,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:06:50,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2021-10-08 16:06:50,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903843893] [2021-10-08 16:06:50,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-08 16:06:50,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:06:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-08 16:06:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=3366, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:06:50,050 INFO L87 Difference]: Start difference. First operand 6559 states and 19987 transitions. Second operand has 60 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 59 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:06:55,250 INFO L93 Difference]: Finished difference Result 11055 states and 31641 transitions. [2021-10-08 16:06:55,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:06:55,251 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 59 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-08 16:06:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:06:55,273 INFO L225 Difference]: With dead ends: 11055 [2021-10-08 16:06:55,273 INFO L226 Difference]: Without dead ends: 11055 [2021-10-08 16:06:55,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 4139.0ms TimeCoverageRelationStatistics Valid=395, Invalid=7261, Unknown=0, NotChecked=0, Total=7656 [2021-10-08 16:06:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11055 states. [2021-10-08 16:06:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11055 to 6707. [2021-10-08 16:06:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6707 states, 6696 states have (on average 3.0446535244922344) internal successors, (20387), 6706 states have internal predecessors, (20387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6707 states to 6707 states and 20387 transitions. [2021-10-08 16:06:55,412 INFO L78 Accepts]: Start accepts. Automaton has 6707 states and 20387 transitions. Word has length 44 [2021-10-08 16:06:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:06:55,412 INFO L470 AbstractCegarLoop]: Abstraction has 6707 states and 20387 transitions. [2021-10-08 16:06:55,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 59 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:06:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6707 states and 20387 transitions. [2021-10-08 16:06:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 16:06:55,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:06:55,418 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2021-10-08 16:06:55,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-08 16:06:55,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-10-08 16:06:55,619 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:06:55,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:06:55,619 INFO L82 PathProgramCache]: Analyzing trace with hash -555455187, now seen corresponding path program 9 times [2021-10-08 16:06:55,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:06:55,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894166752] [2021-10-08 16:06:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:06:55,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:06:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:06:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:06:56,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:06:56,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894166752] [2021-10-08 16:06:56,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894166752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:06:56,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707052681] [2021-10-08 16:06:56,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:06:56,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:06:56,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:06:56,397 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:06:56,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-08 16:06:59,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-08 16:06:59,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:06:59,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:06:59,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:06:59,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:07:00,071 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:00,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:07:00,323 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:00,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:07:01,450 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:07:01,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:07:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:01,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707052681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:01,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:01,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2021-10-08 16:07:01,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422262338] [2021-10-08 16:07:01,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-08 16:07:01,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:01,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-08 16:07:01,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2163, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:07:01,455 INFO L87 Difference]: Start difference. First operand 6707 states and 20387 transitions. Second operand has 49 states, 48 states have (on average 1.8125) internal successors, (87), 48 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:08,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:08,006 INFO L93 Difference]: Finished difference Result 11486 states and 31713 transitions. [2021-10-08 16:07:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 16:07:08,007 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.8125) internal successors, (87), 48 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-08 16:07:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:08,032 INFO L225 Difference]: With dead ends: 11486 [2021-10-08 16:07:08,032 INFO L226 Difference]: Without dead ends: 11486 [2021-10-08 16:07:08,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 5230.1ms TimeCoverageRelationStatistics Valid=609, Invalid=6873, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:07:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11486 states. [2021-10-08 16:07:08,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11486 to 8463. [2021-10-08 16:07:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8463 states, 8452 states have (on average 3.063416942735447) internal successors, (25892), 8462 states have internal predecessors, (25892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8463 states to 8463 states and 25892 transitions. [2021-10-08 16:07:08,260 INFO L78 Accepts]: Start accepts. Automaton has 8463 states and 25892 transitions. Word has length 44 [2021-10-08 16:07:08,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:08,260 INFO L470 AbstractCegarLoop]: Abstraction has 8463 states and 25892 transitions. [2021-10-08 16:07:08,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.8125) internal successors, (87), 48 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8463 states and 25892 transitions. [2021-10-08 16:07:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 16:07:08,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:08,266 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:08,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-08 16:07:08,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-10-08 16:07:08,467 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:07:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:08,468 INFO L82 PathProgramCache]: Analyzing trace with hash -555455116, now seen corresponding path program 12 times [2021-10-08 16:07:08,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:08,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774566946] [2021-10-08 16:07:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:08,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:09,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:09,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774566946] [2021-10-08 16:07:09,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774566946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:09,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450011879] [2021-10-08 16:07:09,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:07:09,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:09,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:09,187 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:09,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-08 16:07:11,647 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-08 16:07:11,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:11,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:07:11,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:11,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:07:11,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 226 [2021-10-08 16:07:12,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:07:12,450 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:12,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:07:12,695 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:07:12,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:07:13,932 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:07:13,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:07:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:13,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450011879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:13,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:13,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2021-10-08 16:07:13,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127851336] [2021-10-08 16:07:13,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-08 16:07:13,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-08 16:07:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2163, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:07:13,940 INFO L87 Difference]: Start difference. First operand 8463 states and 25892 transitions. Second operand has 49 states, 48 states have (on average 1.8125) internal successors, (87), 48 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:19,615 INFO L93 Difference]: Finished difference Result 11262 states and 31058 transitions. [2021-10-08 16:07:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 16:07:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.8125) internal successors, (87), 48 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-08 16:07:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:19,641 INFO L225 Difference]: With dead ends: 11262 [2021-10-08 16:07:19,641 INFO L226 Difference]: Without dead ends: 11262 [2021-10-08 16:07:19,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 4743.1ms TimeCoverageRelationStatistics Valid=611, Invalid=6871, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:07:19,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2021-10-08 16:07:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 8236. [2021-10-08 16:07:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8236 states, 8225 states have (on average 3.0407294832826746) internal successors, (25010), 8235 states have internal predecessors, (25010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 25010 transitions. [2021-10-08 16:07:19,820 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 25010 transitions. Word has length 44 [2021-10-08 16:07:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:19,820 INFO L470 AbstractCegarLoop]: Abstraction has 8236 states and 25010 transitions. [2021-10-08 16:07:19,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.8125) internal successors, (87), 48 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 25010 transitions. [2021-10-08 16:07:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-08 16:07:19,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:19,830 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:19,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:20,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:20,045 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:07:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:20,045 INFO L82 PathProgramCache]: Analyzing trace with hash -39238229, now seen corresponding path program 2 times [2021-10-08 16:07:20,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:20,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899083161] [2021-10-08 16:07:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:20,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-10-08 16:07:20,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:20,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899083161] [2021-10-08 16:07:20,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899083161] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:20,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420522540] [2021-10-08 16:07:20,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:07:20,164 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:20,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:20,166 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:20,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-08 16:07:22,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:07:22,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:22,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:07:22,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-10-08 16:07:22,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420522540] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:22,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:22,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2] total 13 [2021-10-08 16:07:22,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654067845] [2021-10-08 16:07:22,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:07:22,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:22,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:07:22,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:07:22,203 INFO L87 Difference]: Start difference. First operand 8236 states and 25010 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:22,572 INFO L93 Difference]: Finished difference Result 11193 states and 30691 transitions. [2021-10-08 16:07:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:07:22,572 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-08 16:07:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:22,592 INFO L225 Difference]: With dead ends: 11193 [2021-10-08 16:07:22,592 INFO L226 Difference]: Without dead ends: 9512 [2021-10-08 16:07:22,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:07:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2021-10-08 16:07:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 6556. [2021-10-08 16:07:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6556 states, 6548 states have (on average 3.080024434941967) internal successors, (20168), 6555 states have internal predecessors, (20168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6556 states to 6556 states and 20168 transitions. [2021-10-08 16:07:22,773 INFO L78 Accepts]: Start accepts. Automaton has 6556 states and 20168 transitions. Word has length 45 [2021-10-08 16:07:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:22,773 INFO L470 AbstractCegarLoop]: Abstraction has 6556 states and 20168 transitions. [2021-10-08 16:07:22,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 6556 states and 20168 transitions. [2021-10-08 16:07:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-08 16:07:22,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:22,781 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:22,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-08 16:07:22,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-10-08 16:07:22,995 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:07:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1233233265, now seen corresponding path program 17 times [2021-10-08 16:07:22,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:22,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058692419] [2021-10-08 16:07:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:22,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 144 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:23,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:23,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058692419] [2021-10-08 16:07:23,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058692419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:23,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883512282] [2021-10-08 16:07:23,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:07:23,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:23,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:23,568 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:23,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-08 16:07:25,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-10-08 16:07:25,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:25,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:07:25,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 169 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:26,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883512282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:26,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:26,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57 [2021-10-08 16:07:26,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462685932] [2021-10-08 16:07:26,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-08 16:07:26,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-08 16:07:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=2744, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:07:26,943 INFO L87 Difference]: Start difference. First operand 6556 states and 20168 transitions. Second operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:30,389 INFO L93 Difference]: Finished difference Result 10896 states and 28910 transitions. [2021-10-08 16:07:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-08 16:07:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-08 16:07:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:30,416 INFO L225 Difference]: With dead ends: 10896 [2021-10-08 16:07:30,416 INFO L226 Difference]: Without dead ends: 10782 [2021-10-08 16:07:30,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4224 ImplicationChecksByTransitivity, 3690.1ms TimeCoverageRelationStatistics Valid=3917, Invalid=15265, Unknown=0, NotChecked=0, Total=19182 [2021-10-08 16:07:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10782 states. [2021-10-08 16:07:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10782 to 4692. [2021-10-08 16:07:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4684 states have (on average 2.983134073441503) internal successors, (13973), 4691 states have internal predecessors, (13973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 13973 transitions. [2021-10-08 16:07:30,526 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 13973 transitions. Word has length 46 [2021-10-08 16:07:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:30,526 INFO L470 AbstractCegarLoop]: Abstraction has 4692 states and 13973 transitions. [2021-10-08 16:07:30,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 13973 transitions. [2021-10-08 16:07:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-08 16:07:30,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:30,533 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:30,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-08 16:07:30,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:30,748 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:07:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:30,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1471819090, now seen corresponding path program 19 times [2021-10-08 16:07:30,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:30,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268319646] [2021-10-08 16:07:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:30,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:32,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:32,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268319646] [2021-10-08 16:07:32,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268319646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:32,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583259547] [2021-10-08 16:07:32,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:07:32,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:32,047 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:32,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-08 16:07:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:34,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-08 16:07:34,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:34,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:07:34,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 118 [2021-10-08 16:07:35,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:07:35,282 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:07:35,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:07:35,369 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:07:35,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:07:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:36,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583259547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:36,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:36,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 62 [2021-10-08 16:07:36,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635038764] [2021-10-08 16:07:36,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-08 16:07:36,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-08 16:07:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3885, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:07:36,598 INFO L87 Difference]: Start difference. First operand 4692 states and 13973 transitions. Second operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:07:42,794 INFO L93 Difference]: Finished difference Result 9538 states and 26654 transitions. [2021-10-08 16:07:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:07:42,795 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-08 16:07:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:07:42,814 INFO L225 Difference]: With dead ends: 9538 [2021-10-08 16:07:42,814 INFO L226 Difference]: Without dead ends: 9538 [2021-10-08 16:07:42,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 4992.4ms TimeCoverageRelationStatistics Valid=396, Invalid=8534, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 16:07:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2021-10-08 16:07:42,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 4840. [2021-10-08 16:07:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4840 states, 4832 states have (on average 3.006001655629139) internal successors, (14525), 4839 states have internal predecessors, (14525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4840 states to 4840 states and 14525 transitions. [2021-10-08 16:07:42,919 INFO L78 Accepts]: Start accepts. Automaton has 4840 states and 14525 transitions. Word has length 47 [2021-10-08 16:07:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:07:42,920 INFO L470 AbstractCegarLoop]: Abstraction has 4840 states and 14525 transitions. [2021-10-08 16:07:42,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:07:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4840 states and 14525 transitions. [2021-10-08 16:07:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-08 16:07:42,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:07:42,925 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:07:42,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-08 16:07:43,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-10-08 16:07:43,126 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:07:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:07:43,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1471819122, now seen corresponding path program 18 times [2021-10-08 16:07:43,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:07:43,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676769225] [2021-10-08 16:07:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:07:43,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:07:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:07:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:44,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:07:44,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676769225] [2021-10-08 16:07:44,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676769225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:44,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069123690] [2021-10-08 16:07:44,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:07:44,327 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:07:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:07:44,328 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:07:44,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-08 16:07:47,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-10-08 16:07:47,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:07:47,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-08 16:07:47,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:07:48,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-08 16:07:48,712 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-10-08 16:07:48,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:07:48,849 INFO L354 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2021-10-08 16:07:48,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 52 [2021-10-08 16:07:49,134 INFO L354 Elim1Store]: treesize reduction 171, result has 17.8 percent of original size [2021-10-08 16:07:49,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 70 [2021-10-08 16:07:49,340 INFO L354 Elim1Store]: treesize reduction 171, result has 17.8 percent of original size [2021-10-08 16:07:49,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 70 [2021-10-08 16:07:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 169 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:07:51,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069123690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:07:51,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:07:51,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 62 [2021-10-08 16:07:51,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496566193] [2021-10-08 16:07:51,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-08 16:07:51,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:07:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-08 16:07:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3733, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:07:51,875 INFO L87 Difference]: Start difference. First operand 4840 states and 14525 transitions. Second operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:14,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:14,750 INFO L93 Difference]: Finished difference Result 15402 states and 39346 transitions. [2021-10-08 16:08:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-08 16:08:14,751 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-08 16:08:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:14,781 INFO L225 Difference]: With dead ends: 15402 [2021-10-08 16:08:14,781 INFO L226 Difference]: Without dead ends: 15402 [2021-10-08 16:08:14,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4792 ImplicationChecksByTransitivity, 16258.7ms TimeCoverageRelationStatistics Valid=1865, Invalid=21697, Unknown=0, NotChecked=0, Total=23562 [2021-10-08 16:08:14,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15402 states. [2021-10-08 16:08:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15402 to 7134. [2021-10-08 16:08:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7134 states, 7126 states have (on average 3.0679202918888575) internal successors, (21862), 7133 states have internal predecessors, (21862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 21862 transitions. [2021-10-08 16:08:14,962 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 21862 transitions. Word has length 47 [2021-10-08 16:08:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:14,962 INFO L470 AbstractCegarLoop]: Abstraction has 7134 states and 21862 transitions. [2021-10-08 16:08:14,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 21862 transitions. [2021-10-08 16:08:14,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-08 16:08:14,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:14,968 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2021-10-08 16:08:15,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-08 16:08:15,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:15,169 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:08:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash -392375446, now seen corresponding path program 12 times [2021-10-08 16:08:15,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:15,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031055474] [2021-10-08 16:08:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:15,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:16,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031055474] [2021-10-08 16:08:16,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031055474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858342466] [2021-10-08 16:08:16,009 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:08:16,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:16,010 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:16,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-08 16:08:19,026 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-08 16:08:19,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:19,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:08:19,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:19,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:08:19,784 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:08:19,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:08:21,306 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:08:21,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:08:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 145 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:21,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858342466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:21,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:21,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-10-08 16:08:21,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901611200] [2021-10-08 16:08:21,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-08 16:08:21,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-08 16:08:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2329, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:08:21,312 INFO L87 Difference]: Start difference. First operand 7134 states and 21862 transitions. Second operand has 51 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:28,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:28,984 INFO L93 Difference]: Finished difference Result 7559 states and 23241 transitions. [2021-10-08 16:08:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:08:28,984 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-08 16:08:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:29,001 INFO L225 Difference]: With dead ends: 7559 [2021-10-08 16:08:29,001 INFO L226 Difference]: Without dead ends: 7559 [2021-10-08 16:08:29,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 5195.5ms TimeCoverageRelationStatistics Valid=672, Invalid=7700, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:08:29,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7559 states. [2021-10-08 16:08:29,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7559 to 7336. [2021-10-08 16:08:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 7328 states have (on average 3.089792576419214) internal successors, (22642), 7335 states have internal predecessors, (22642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 22642 transitions. [2021-10-08 16:08:29,128 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 22642 transitions. Word has length 47 [2021-10-08 16:08:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:29,128 INFO L470 AbstractCegarLoop]: Abstraction has 7336 states and 22642 transitions. [2021-10-08 16:08:29,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:29,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 22642 transitions. [2021-10-08 16:08:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-08 16:08:29,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:29,134 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2021-10-08 16:08:29,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:29,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-08 16:08:29,335 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:08:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:29,336 INFO L82 PathProgramCache]: Analyzing trace with hash -392375375, now seen corresponding path program 12 times [2021-10-08 16:08:29,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:29,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603703129] [2021-10-08 16:08:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:29,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:30,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:30,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603703129] [2021-10-08 16:08:30,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603703129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:30,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008232533] [2021-10-08 16:08:30,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:08:30,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:30,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:30,073 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:30,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-08 16:08:32,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-08 16:08:32,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:32,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:08:32,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:33,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:08:33,179 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:08:33,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:08:34,683 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:08:34,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:08:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 145 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:34,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008232533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:34,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:34,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2021-10-08 16:08:34,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089380435] [2021-10-08 16:08:34,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-08 16:08:34,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-08 16:08:34,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=2329, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:08:34,688 INFO L87 Difference]: Start difference. First operand 7336 states and 22642 transitions. Second operand has 51 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:40,359 INFO L93 Difference]: Finished difference Result 7554 states and 23040 transitions. [2021-10-08 16:08:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:08:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-08 16:08:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:40,376 INFO L225 Difference]: With dead ends: 7554 [2021-10-08 16:08:40,376 INFO L226 Difference]: Without dead ends: 7554 [2021-10-08 16:08:40,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 4815.5ms TimeCoverageRelationStatistics Valid=672, Invalid=7700, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:08:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7554 states. [2021-10-08 16:08:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7554 to 7143. [2021-10-08 16:08:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7143 states, 7135 states have (on average 3.066853538892782) internal successors, (21882), 7142 states have internal predecessors, (21882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 21882 transitions. [2021-10-08 16:08:40,507 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 21882 transitions. Word has length 47 [2021-10-08 16:08:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:40,508 INFO L470 AbstractCegarLoop]: Abstraction has 7143 states and 21882 transitions. [2021-10-08 16:08:40,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.86) internal successors, (93), 50 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 21882 transitions. [2021-10-08 16:08:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-08 16:08:40,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:40,514 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:40,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:40,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:40,715 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:08:40,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:40,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1095932631, now seen corresponding path program 10 times [2021-10-08 16:08:40,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:40,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350225552] [2021-10-08 16:08:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:40,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:41,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:41,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350225552] [2021-10-08 16:08:41,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350225552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:41,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074340071] [2021-10-08 16:08:41,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:08:41,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:41,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:41,694 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:41,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-08 16:08:43,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:08:43,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:08:43,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:08:43,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:43,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-08 16:08:44,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:08:44,697 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:08:44,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:08:44,953 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:08:44,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-08 16:08:46,369 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:08:46,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2021-10-08 16:08:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 126 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:46,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074340071] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:46,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:46,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-10-08 16:08:46,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567654958] [2021-10-08 16:08:46,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-08 16:08:46,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-08 16:08:46,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2539, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:08:46,376 INFO L87 Difference]: Start difference. First operand 7143 states and 21882 transitions. Second operand has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:08:53,247 INFO L93 Difference]: Finished difference Result 12832 states and 35402 transitions. [2021-10-08 16:08:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:08:53,248 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-08 16:08:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:08:53,274 INFO L225 Difference]: With dead ends: 12832 [2021-10-08 16:08:53,275 INFO L226 Difference]: Without dead ends: 12832 [2021-10-08 16:08:53,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 5470.8ms TimeCoverageRelationStatistics Valid=685, Invalid=8057, Unknown=0, NotChecked=0, Total=8742 [2021-10-08 16:08:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12832 states. [2021-10-08 16:08:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12832 to 9476. [2021-10-08 16:08:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9476 states, 9468 states have (on average 3.070659062103929) internal successors, (29073), 9475 states have internal predecessors, (29073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9476 states to 9476 states and 29073 transitions. [2021-10-08 16:08:53,460 INFO L78 Accepts]: Start accepts. Automaton has 9476 states and 29073 transitions. Word has length 48 [2021-10-08 16:08:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:08:53,460 INFO L470 AbstractCegarLoop]: Abstraction has 9476 states and 29073 transitions. [2021-10-08 16:08:53,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:08:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 9476 states and 29073 transitions. [2021-10-08 16:08:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-08 16:08:53,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:08:53,471 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2021-10-08 16:08:53,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-08 16:08:53,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-10-08 16:08:53,686 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:08:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:08:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1095932560, now seen corresponding path program 13 times [2021-10-08 16:08:53,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:08:53,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071414021] [2021-10-08 16:08:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:08:53,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:08:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:54,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:08:54,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071414021] [2021-10-08 16:08:54,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071414021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:54,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453597011] [2021-10-08 16:08:54,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:08:54,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:08:54,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:08:54,668 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:08:54,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-08 16:08:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:08:56,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-08 16:08:56,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:08:56,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:08:56,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:08:57,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:08:57,541 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:08:57,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:08:57,706 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:08:57,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:08:58,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:08:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:08:58,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453597011] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:08:58,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:08:58,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2021-10-08 16:08:58,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793781338] [2021-10-08 16:08:58,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-08 16:08:58,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:08:58,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-08 16:08:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=2644, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:08:58,595 INFO L87 Difference]: Start difference. First operand 9476 states and 29073 transitions. Second operand has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:04,084 INFO L93 Difference]: Finished difference Result 12751 states and 35201 transitions. [2021-10-08 16:09:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:09:04,085 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-08 16:09:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:04,112 INFO L225 Difference]: With dead ends: 12751 [2021-10-08 16:09:04,112 INFO L226 Difference]: Without dead ends: 12751 [2021-10-08 16:09:04,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3695.2ms TimeCoverageRelationStatistics Valid=301, Invalid=5861, Unknown=0, NotChecked=0, Total=6162 [2021-10-08 16:09:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12751 states. [2021-10-08 16:09:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12751 to 9444. [2021-10-08 16:09:04,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9444 states, 9436 states have (on average 3.0498092412039) internal successors, (28778), 9443 states have internal predecessors, (28778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9444 states to 9444 states and 28778 transitions. [2021-10-08 16:09:04,285 INFO L78 Accepts]: Start accepts. Automaton has 9444 states and 28778 transitions. Word has length 48 [2021-10-08 16:09:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:04,285 INFO L470 AbstractCegarLoop]: Abstraction has 9444 states and 28778 transitions. [2021-10-08 16:09:04,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 52 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9444 states and 28778 transitions. [2021-10-08 16:09:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-08 16:09:04,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:04,294 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:04,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:04,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:04,503 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:09:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:04,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1373960766, now seen corresponding path program 20 times [2021-10-08 16:09:04,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:04,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096333471] [2021-10-08 16:09:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:04,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 169 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:05,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:05,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096333471] [2021-10-08 16:09:05,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096333471] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:05,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58492228] [2021-10-08 16:09:05,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:09:05,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:05,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:05,048 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:05,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-08 16:09:07,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:09:07,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:07,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:09:07,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 196 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:08,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58492228] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:08,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:08,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2021-10-08 16:09:08,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085884702] [2021-10-08 16:09:08,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-08 16:09:08,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:08,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-08 16:09:08,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=3135, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 16:09:08,734 INFO L87 Difference]: Start difference. First operand 9444 states and 28778 transitions. Second operand has 63 states, 62 states have (on average 1.532258064516129) internal successors, (95), 62 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:13,534 INFO L93 Difference]: Finished difference Result 15398 states and 40381 transitions. [2021-10-08 16:09:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-10-08 16:09:13,535 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.532258064516129) internal successors, (95), 62 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-08 16:09:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:13,563 INFO L225 Difference]: With dead ends: 15398 [2021-10-08 16:09:13,563 INFO L226 Difference]: Without dead ends: 15276 [2021-10-08 16:09:13,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7474 ImplicationChecksByTransitivity, 4987.8ms TimeCoverageRelationStatistics Valid=6033, Invalid=24069, Unknown=0, NotChecked=0, Total=30102 [2021-10-08 16:09:13,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15276 states. [2021-10-08 16:09:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15276 to 7270. [2021-10-08 16:09:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7262 states have (on average 2.9672266593225007) internal successors, (21548), 7269 states have internal predecessors, (21548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 21548 transitions. [2021-10-08 16:09:13,727 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 21548 transitions. Word has length 49 [2021-10-08 16:09:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:13,727 INFO L470 AbstractCegarLoop]: Abstraction has 7270 states and 21548 transitions. [2021-10-08 16:09:13,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.532258064516129) internal successors, (95), 62 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 21548 transitions. [2021-10-08 16:09:13,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-08 16:09:13,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:13,734 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:13,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:13,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-10-08 16:09:13,934 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:09:13,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:13,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1118247035, now seen corresponding path program 21 times [2021-10-08 16:09:13,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:13,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107476050] [2021-10-08 16:09:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:13,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:15,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:15,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107476050] [2021-10-08 16:09:15,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107476050] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:15,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559632018] [2021-10-08 16:09:15,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:09:15,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:15,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:15,231 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:15,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-08 16:09:18,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-08 16:09:18,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:09:18,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-08 16:09:18,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:18,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:09:18,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-08 16:09:20,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:09:20,328 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:20,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:09:20,466 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:09:20,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:09:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 196 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:22,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559632018] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:22,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:22,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 66 [2021-10-08 16:09:22,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220889929] [2021-10-08 16:09:22,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-08 16:09:22,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:22,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-08 16:09:22,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=4195, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:09:22,639 INFO L87 Difference]: Start difference. First operand 7270 states and 21548 transitions. Second operand has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:09:46,642 INFO L93 Difference]: Finished difference Result 20592 states and 52552 transitions. [2021-10-08 16:09:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-08 16:09:46,642 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-08 16:09:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:09:46,688 INFO L225 Difference]: With dead ends: 20592 [2021-10-08 16:09:46,688 INFO L226 Difference]: Without dead ends: 20592 [2021-10-08 16:09:46,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6729 ImplicationChecksByTransitivity, 15346.0ms TimeCoverageRelationStatistics Valid=2352, Invalid=28448, Unknown=0, NotChecked=0, Total=30800 [2021-10-08 16:09:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20592 states. [2021-10-08 16:09:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20592 to 9910. [2021-10-08 16:09:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 9902 states have (on average 3.047566148252878) internal successors, (30177), 9909 states have internal predecessors, (30177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 30177 transitions. [2021-10-08 16:09:46,998 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 30177 transitions. Word has length 50 [2021-10-08 16:09:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:09:46,998 INFO L470 AbstractCegarLoop]: Abstraction has 9910 states and 30177 transitions. [2021-10-08 16:09:46,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:09:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 30177 transitions. [2021-10-08 16:09:47,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-08 16:09:47,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:09:47,007 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:09:47,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-08 16:09:47,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:47,208 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:09:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:09:47,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1118247067, now seen corresponding path program 19 times [2021-10-08 16:09:47,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:09:47,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65679800] [2021-10-08 16:09:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:09:47,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:09:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:48,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:09:48,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65679800] [2021-10-08 16:09:48,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65679800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:48,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032460559] [2021-10-08 16:09:48,580 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:09:48,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:09:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:09:48,582 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:09:48,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-08 16:09:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:09:51,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-08 16:09:51,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:09:51,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:09:51,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-08 16:09:52,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:09:52,306 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:09:52,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:09:52,401 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:09:52,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:09:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:09:53,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032460559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:09:53,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:09:53,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 66 [2021-10-08 16:09:53,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586149250] [2021-10-08 16:09:53,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-08 16:09:53,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:09:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-08 16:09:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=4400, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:09:53,928 INFO L87 Difference]: Start difference. First operand 9910 states and 30177 transitions. Second operand has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:01,487 INFO L93 Difference]: Finished difference Result 15598 states and 44981 transitions. [2021-10-08 16:10:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:10:01,487 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-08 16:10:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:01,523 INFO L225 Difference]: With dead ends: 15598 [2021-10-08 16:10:01,523 INFO L226 Difference]: Without dead ends: 15598 [2021-10-08 16:10:01,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 6024.4ms TimeCoverageRelationStatistics Valid=421, Invalid=9679, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:10:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15598 states. [2021-10-08 16:10:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15598 to 10070. [2021-10-08 16:10:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10070 states, 10062 states have (on average 3.0426356589147288) internal successors, (30615), 10069 states have internal predecessors, (30615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10070 states to 10070 states and 30615 transitions. [2021-10-08 16:10:01,785 INFO L78 Accepts]: Start accepts. Automaton has 10070 states and 30615 transitions. Word has length 50 [2021-10-08 16:10:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:01,785 INFO L470 AbstractCegarLoop]: Abstraction has 10070 states and 30615 transitions. [2021-10-08 16:10:01,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.492537313432836) internal successors, (100), 67 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 10070 states and 30615 transitions. [2021-10-08 16:10:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-08 16:10:01,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:01,795 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2021-10-08 16:10:01,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-08 16:10:01,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:01,996 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:10:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:01,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1984816718, now seen corresponding path program 13 times [2021-10-08 16:10:01,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:01,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142374818] [2021-10-08 16:10:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:01,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:02,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:02,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142374818] [2021-10-08 16:10:02,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142374818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:02,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134398985] [2021-10-08 16:10:02,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:10:02,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:02,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:02,869 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:02,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-08 16:10:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:05,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-08 16:10:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:05,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:10:06,029 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:10:06,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:10:07,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:10:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:07,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134398985] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:07,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:07,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2021-10-08 16:10:07,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100372770] [2021-10-08 16:10:07,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-08 16:10:07,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-08 16:10:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=2847, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:10:07,221 INFO L87 Difference]: Start difference. First operand 10070 states and 30615 transitions. Second operand has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:11,453 INFO L93 Difference]: Finished difference Result 10573 states and 32180 transitions. [2021-10-08 16:10:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:10:11,454 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-08 16:10:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:11,477 INFO L225 Difference]: With dead ends: 10573 [2021-10-08 16:10:11,477 INFO L226 Difference]: Without dead ends: 10573 [2021-10-08 16:10:11,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4005.1ms TimeCoverageRelationStatistics Valid=330, Invalid=6642, Unknown=0, NotChecked=0, Total=6972 [2021-10-08 16:10:11,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10573 states. [2021-10-08 16:10:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10573 to 10288. [2021-10-08 16:10:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10288 states, 10280 states have (on average 3.059533073929961) internal successors, (31452), 10287 states have internal predecessors, (31452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10288 states to 10288 states and 31452 transitions. [2021-10-08 16:10:11,690 INFO L78 Accepts]: Start accepts. Automaton has 10288 states and 31452 transitions. Word has length 51 [2021-10-08 16:10:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:11,690 INFO L470 AbstractCegarLoop]: Abstraction has 10288 states and 31452 transitions. [2021-10-08 16:10:11,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 10288 states and 31452 transitions. [2021-10-08 16:10:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-08 16:10:11,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:11,699 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2021-10-08 16:10:11,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:11,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:11,899 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:10:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1984816647, now seen corresponding path program 13 times [2021-10-08 16:10:11,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:11,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738645055] [2021-10-08 16:10:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:11,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:12,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:12,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738645055] [2021-10-08 16:10:12,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738645055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:12,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195918766] [2021-10-08 16:10:12,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:10:12,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:12,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:12,821 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:12,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-08 16:10:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:15,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-08 16:10:15,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:15,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:10:15,904 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:10:15,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:10:16,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-08 16:10:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:16,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195918766] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:16,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:16,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53 [2021-10-08 16:10:16,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814304533] [2021-10-08 16:10:16,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-08 16:10:16,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-08 16:10:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=2847, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:10:16,905 INFO L87 Difference]: Start difference. First operand 10288 states and 31452 transitions. Second operand has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:20,855 INFO L93 Difference]: Finished difference Result 10568 states and 31967 transitions. [2021-10-08 16:10:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:10:20,855 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-08 16:10:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:20,876 INFO L225 Difference]: With dead ends: 10568 [2021-10-08 16:10:20,876 INFO L226 Difference]: Without dead ends: 10568 [2021-10-08 16:10:20,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 3675.9ms TimeCoverageRelationStatistics Valid=324, Invalid=6482, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:10:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10568 states. [2021-10-08 16:10:21,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10568 to 10085. [2021-10-08 16:10:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10085 states, 10077 states have (on average 3.0412821276173463) internal successors, (30647), 10084 states have internal predecessors, (30647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10085 states to 10085 states and 30647 transitions. [2021-10-08 16:10:21,065 INFO L78 Accepts]: Start accepts. Automaton has 10085 states and 30647 transitions. Word has length 51 [2021-10-08 16:10:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:21,066 INFO L470 AbstractCegarLoop]: Abstraction has 10085 states and 30647 transitions. [2021-10-08 16:10:21,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.8703703703703705) internal successors, (101), 54 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 10085 states and 30647 transitions. [2021-10-08 16:10:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-08 16:10:21,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:21,076 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:21,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:21,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-08 16:10:21,277 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:10:21,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:21,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1415647863, now seen corresponding path program 14 times [2021-10-08 16:10:21,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:21,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656524893] [2021-10-08 16:10:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:21,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:21,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:21,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656524893] [2021-10-08 16:10:21,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656524893] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:21,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431786613] [2021-10-08 16:10:21,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:10:21,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:21,739 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:21,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-08 16:10:24,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:10:24,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:24,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:10:24,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:25,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431786613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:25,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:25,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2021-10-08 16:10:25,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640406699] [2021-10-08 16:10:25,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-08 16:10:25,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-08 16:10:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2040, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:10:25,188 INFO L87 Difference]: Start difference. First operand 10085 states and 30647 transitions. Second operand has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 50 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:26,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:26,011 INFO L93 Difference]: Finished difference Result 10031 states and 30393 transitions. [2021-10-08 16:10:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:10:26,011 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 50 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-08 16:10:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:26,030 INFO L225 Difference]: With dead ends: 10031 [2021-10-08 16:10:26,030 INFO L226 Difference]: Without dead ends: 8210 [2021-10-08 16:10:26,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1320.6ms TimeCoverageRelationStatistics Valid=787, Invalid=3245, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:10:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2021-10-08 16:10:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8210. [2021-10-08 16:10:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8210 states, 8202 states have (on average 3.0758351621555717) internal successors, (25228), 8209 states have internal predecessors, (25228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 25228 transitions. [2021-10-08 16:10:26,175 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 25228 transitions. Word has length 51 [2021-10-08 16:10:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:26,175 INFO L470 AbstractCegarLoop]: Abstraction has 8210 states and 25228 transitions. [2021-10-08 16:10:26,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 50 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 25228 transitions. [2021-10-08 16:10:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-08 16:10:26,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:26,183 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:26,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-10-08 16:10:26,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-08 16:10:26,387 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:10:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:26,388 INFO L82 PathProgramCache]: Analyzing trace with hash 893632327, now seen corresponding path program 20 times [2021-10-08 16:10:26,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:26,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496136996] [2021-10-08 16:10:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:26,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 196 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:27,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:27,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496136996] [2021-10-08 16:10:27,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496136996] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:27,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711840433] [2021-10-08 16:10:27,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:10:27,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:27,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:27,109 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:27,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-08 16:10:29,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:10:29,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:29,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:10:29,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 225 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:31,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711840433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:31,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:31,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2021-10-08 16:10:31,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517017721] [2021-10-08 16:10:31,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-08 16:10:31,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:31,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-08 16:10:31,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=870, Invalid=3552, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:10:31,275 INFO L87 Difference]: Start difference. First operand 8210 states and 25228 transitions. Second operand has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 66 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:36,996 INFO L93 Difference]: Finished difference Result 16570 states and 43460 transitions. [2021-10-08 16:10:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-10-08 16:10:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 66 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-08 16:10:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:37,034 INFO L225 Difference]: With dead ends: 16570 [2021-10-08 16:10:37,034 INFO L226 Difference]: Without dead ends: 16440 [2021-10-08 16:10:37,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8566 ImplicationChecksByTransitivity, 5682.3ms TimeCoverageRelationStatistics Valid=6879, Invalid=27531, Unknown=0, NotChecked=0, Total=34410 [2021-10-08 16:10:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2021-10-08 16:10:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 5876. [2021-10-08 16:10:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5868 states have (on average 2.978698023176551) internal successors, (17479), 5875 states have internal predecessors, (17479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 17479 transitions. [2021-10-08 16:10:37,248 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 17479 transitions. Word has length 52 [2021-10-08 16:10:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:37,249 INFO L470 AbstractCegarLoop]: Abstraction has 5876 states and 17479 transitions. [2021-10-08 16:10:37,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 66 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 17479 transitions. [2021-10-08 16:10:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-08 16:10:37,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:37,254 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:37,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-10-08 16:10:37,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-08 16:10:37,455 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:10:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash 487888173, now seen corresponding path program 11 times [2021-10-08 16:10:37,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:37,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501344249] [2021-10-08 16:10:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:37,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:38,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:38,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501344249] [2021-10-08 16:10:38,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501344249] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:38,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482114810] [2021-10-08 16:10:38,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:10:38,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:38,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:38,420 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:38,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-08 16:10:41,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-08 16:10:41,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:41,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-08 16:10:41,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:41,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:41,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2021-10-08 16:10:41,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-08 16:10:42,042 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:10:42,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-08 16:10:42,223 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:10:42,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-08 16:10:43,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-10-08 16:10:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:43,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482114810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:43,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:43,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2021-10-08 16:10:43,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126149821] [2021-10-08 16:10:43,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-08 16:10:43,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-08 16:10:43,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=3072, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:10:43,265 INFO L87 Difference]: Start difference. First operand 5876 states and 17479 transitions. Second operand has 57 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:10:49,608 INFO L93 Difference]: Finished difference Result 8407 states and 22958 transitions. [2021-10-08 16:10:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:10:49,609 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-08 16:10:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:10:49,625 INFO L225 Difference]: With dead ends: 8407 [2021-10-08 16:10:49,625 INFO L226 Difference]: Without dead ends: 8407 [2021-10-08 16:10:49,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 4430.5ms TimeCoverageRelationStatistics Valid=323, Invalid=6817, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:10:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8407 states. [2021-10-08 16:10:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8407 to 6456. [2021-10-08 16:10:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6456 states, 6448 states have (on average 3.004497518610422) internal successors, (19373), 6455 states have internal predecessors, (19373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 19373 transitions. [2021-10-08 16:10:49,746 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 19373 transitions. Word has length 52 [2021-10-08 16:10:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:10:49,746 INFO L470 AbstractCegarLoop]: Abstraction has 6456 states and 19373 transitions. [2021-10-08 16:10:49,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:10:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 19373 transitions. [2021-10-08 16:10:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-08 16:10:49,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:10:49,752 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2021-10-08 16:10:49,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-08 16:10:49,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-08 16:10:49,953 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:10:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:10:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash 487888244, now seen corresponding path program 15 times [2021-10-08 16:10:49,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:10:49,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465827649] [2021-10-08 16:10:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:10:49,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:10:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:10:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:50,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:10:50,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465827649] [2021-10-08 16:10:50,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465827649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:50,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310008666] [2021-10-08 16:10:50,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:10:50,964 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:10:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:10:50,965 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:10:50,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-08 16:10:54,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-08 16:10:54,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:10:54,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:10:54,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:10:54,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:10:55,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 93 [2021-10-08 16:10:55,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-08 16:10:56,009 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:56,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-08 16:10:56,279 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:10:56,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-08 16:10:57,913 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-10-08 16:10:57,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2021-10-08 16:10:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 155 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:10:57,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310008666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:10:57,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:10:57,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2021-10-08 16:10:57,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920329462] [2021-10-08 16:10:57,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-08 16:10:57,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:10:57,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-08 16:10:57,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2945, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:10:57,919 INFO L87 Difference]: Start difference. First operand 6456 states and 19373 transitions. Second operand has 57 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:06,182 INFO L93 Difference]: Finished difference Result 10386 states and 28752 transitions. [2021-10-08 16:11:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 16:11:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-08 16:11:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:06,204 INFO L225 Difference]: With dead ends: 10386 [2021-10-08 16:11:06,205 INFO L226 Difference]: Without dead ends: 10386 [2021-10-08 16:11:06,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 6441.1ms TimeCoverageRelationStatistics Valid=763, Invalid=9337, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:11:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10386 states. [2021-10-08 16:11:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10386 to 8335. [2021-10-08 16:11:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8335 states, 8327 states have (on average 2.9757415635883273) internal successors, (24779), 8334 states have internal predecessors, (24779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8335 states to 8335 states and 24779 transitions. [2021-10-08 16:11:06,370 INFO L78 Accepts]: Start accepts. Automaton has 8335 states and 24779 transitions. Word has length 52 [2021-10-08 16:11:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:06,371 INFO L470 AbstractCegarLoop]: Abstraction has 8335 states and 24779 transitions. [2021-10-08 16:11:06,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 56 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 8335 states and 24779 transitions. [2021-10-08 16:11:06,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-08 16:11:06,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:06,381 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:11:06,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-08 16:11:06,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:06,594 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:11:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2097112118, now seen corresponding path program 22 times [2021-10-08 16:11:06,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:06,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818438696] [2021-10-08 16:11:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:06,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:08,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:08,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818438696] [2021-10-08 16:11:08,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818438696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:08,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616711629] [2021-10-08 16:11:08,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:11:08,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:08,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:08,099 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:08,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-08 16:11:10,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:11:10,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:10,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-08 16:11:10,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:11:10,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-08 16:11:11,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-08 16:11:12,025 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:11:12,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-08 16:11:12,126 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-08 16:11:12,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-08 16:11:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:13,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616711629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:13,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:13,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2021-10-08 16:11:13,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989193240] [2021-10-08 16:11:13,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-08 16:11:13,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-08 16:11:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4947, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:11:13,795 INFO L87 Difference]: Start difference. First operand 8335 states and 24779 transitions. Second operand has 72 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 71 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:11:22,098 INFO L93 Difference]: Finished difference Result 14881 states and 41944 transitions. [2021-10-08 16:11:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:11:22,099 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 71 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-08 16:11:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:11:22,127 INFO L225 Difference]: With dead ends: 14881 [2021-10-08 16:11:22,127 INFO L226 Difference]: Without dead ends: 14881 [2021-10-08 16:11:22,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 6507.5ms TimeCoverageRelationStatistics Valid=446, Invalid=10896, Unknown=0, NotChecked=0, Total=11342 [2021-10-08 16:11:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14881 states. [2021-10-08 16:11:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14881 to 8507. [2021-10-08 16:11:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 8499 states have (on average 2.9912930933050945) internal successors, (25423), 8506 states have internal predecessors, (25423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 25423 transitions. [2021-10-08 16:11:22,312 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 25423 transitions. Word has length 53 [2021-10-08 16:11:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:11:22,313 INFO L470 AbstractCegarLoop]: Abstraction has 8507 states and 25423 transitions. [2021-10-08 16:11:22,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 71 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:11:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 25423 transitions. [2021-10-08 16:11:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-08 16:11:22,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:11:22,320 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:11:22,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-08 16:11:22,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-10-08 16:11:22,521 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:11:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:11:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2097112086, now seen corresponding path program 21 times [2021-10-08 16:11:22,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:11:22,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497007674] [2021-10-08 16:11:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:11:22,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:11:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:11:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:23,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:11:23,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497007674] [2021-10-08 16:11:23,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497007674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:23,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396581662] [2021-10-08 16:11:23,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:11:23,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:11:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:11:23,898 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:11:23,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-08 16:11:29,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-08 16:11:29,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:11:29,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-08 16:11:29,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:11:31,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-08 16:11:31,220 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:11:31,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:11:31,362 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-08 16:11:31,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-08 16:11:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 225 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:11:33,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396581662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:11:33,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:11:33,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70 [2021-10-08 16:11:33,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138718128] [2021-10-08 16:11:33,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-08 16:11:33,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:11:33,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-08 16:11:33,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=4712, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:11:33,851 INFO L87 Difference]: Start difference. First operand 8507 states and 25423 transitions. Second operand has 72 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 71 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:12:01,943 INFO L93 Difference]: Finished difference Result 23689 states and 60322 transitions. [2021-10-08 16:12:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-10-08 16:12:01,944 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 71 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-08 16:12:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:12:01,990 INFO L225 Difference]: With dead ends: 23689 [2021-10-08 16:12:01,990 INFO L226 Difference]: Without dead ends: 23689 [2021-10-08 16:12:01,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7626 ImplicationChecksByTransitivity, 18427.1ms TimeCoverageRelationStatistics Valid=2601, Invalid=32181, Unknown=0, NotChecked=0, Total=34782 [2021-10-08 16:12:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23689 states. [2021-10-08 16:12:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23689 to 11517. [2021-10-08 16:12:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11517 states, 11509 states have (on average 3.0501346772091407) internal successors, (35104), 11516 states have internal predecessors, (35104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11517 states to 11517 states and 35104 transitions. [2021-10-08 16:12:02,262 INFO L78 Accepts]: Start accepts. Automaton has 11517 states and 35104 transitions. Word has length 53 [2021-10-08 16:12:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:12:02,262 INFO L470 AbstractCegarLoop]: Abstraction has 11517 states and 35104 transitions. [2021-10-08 16:12:02,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 71 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:12:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 11517 states and 35104 transitions. [2021-10-08 16:12:02,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-08 16:12:02,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:12:02,275 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2021-10-08 16:12:02,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2021-10-08 16:12:02,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:02,476 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-08 16:12:02,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:12:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash -856808185, now seen corresponding path program 14 times [2021-10-08 16:12:02,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:12:02,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048691012] [2021-10-08 16:12:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:12:02,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:12:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:12:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:12:02,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:12:02,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048691012] [2021-10-08 16:12:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048691012] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:12:02,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863492007] [2021-10-08 16:12:02,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:12:02,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:12:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:12:02,921 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:12:02,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process Received shutdown request... [2021-10-08 16:12:04,975 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:12:05,007 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:12:05,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:12:05,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:12:05,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:12:05,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:12:05,550 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-08 16:12:05,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-08 16:12:05,752 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. [2021-10-08 16:12:05,755 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,755 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,755 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:12:05,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:12:05,759 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,760 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,761 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:12:05,770 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:12:05,770 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:12:05,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:12:05 BasicIcfg [2021-10-08 16:12:05,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:12:05,773 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-08 16:12:05,774 INFO L168 Benchmark]: Toolchain (without parser) took 730356.64 ms. Allocated memory was 178.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 152.5 MB in the beginning and 346.0 MB in the end (delta: -193.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-10-08 16:12:05,774 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 178.3 MB. Free memory was 148.8 MB in the beginning and 148.7 MB in the end (delta: 110.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:12:05,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.09 ms. Allocated memory is still 178.3 MB. Free memory was 152.1 MB in the beginning and 141.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:05,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.76 ms. Allocated memory is still 178.3 MB. Free memory was 141.4 MB in the beginning and 139.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:05,775 INFO L168 Benchmark]: Boogie Preprocessor took 70.13 ms. Allocated memory is still 178.3 MB. Free memory was 139.4 MB in the beginning and 137.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:05,775 INFO L168 Benchmark]: RCFGBuilder took 817.36 ms. Allocated memory is still 178.3 MB. Free memory was 137.9 MB in the beginning and 156.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2021-10-08 16:12:05,775 INFO L168 Benchmark]: TraceAbstraction took 728946.55 ms. Allocated memory was 178.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 155.5 MB in the beginning and 346.0 MB in the end (delta: -190.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-10-08 16:12:05,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 178.3 MB. Free memory was 148.8 MB in the beginning and 148.7 MB in the end (delta: 110.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 449.09 ms. Allocated memory is still 178.3 MB. Free memory was 152.1 MB in the beginning and 141.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.76 ms. Allocated memory is still 178.3 MB. Free memory was 141.4 MB in the beginning and 139.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.13 ms. Allocated memory is still 178.3 MB. Free memory was 139.4 MB in the beginning and 137.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 817.36 ms. Allocated memory is still 178.3 MB. Free memory was 137.9 MB in the beginning and 156.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 728946.55 ms. Allocated memory was 178.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 155.5 MB in the beginning and 346.0 MB in the end (delta: -190.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12120.0ms, 196 PlacesBefore, 44 PlacesAfterwards, 206 TransitionsBefore, 40 TransitionsAfterwards, 8732 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 23 ConcurrentYvCompositions, 14 ChoiceCompositions, 258 TotalNumberOfCompositions, 10594 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9105, positive: 9005, positive conditional: 0, positive unconditional: 9005, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6187, positive: 6150, positive conditional: 0, positive unconditional: 6150, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6187, positive: 6144, positive conditional: 0, positive unconditional: 6144, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 167, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 135, negative conditional: 0, negative unconditional: 135, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 9105, positive: 2855, positive conditional: 0, positive unconditional: 2855, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 6187, unknown conditional: 0, unknown unconditional: 6187] , Statistics on independence cache: Total cache size (in pairs): 127, Positive cache size: 113, Positive conditional cache size: 0, Positive unconditional cache size: 113, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 55 with TraceHistMax 13,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 300 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 728635.6ms, OverallIterations: 119, TraceHistogramMax: 16, EmptinessCheckTime: 421.4ms, AutomataDifference: 382613.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12208.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10104 SDtfs, 47144 SDslu, 220487 SDs, 0 SdLazy, 245860 SolverSat, 6439 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 156174.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7941 GetRequests, 1406 SyntacticMatches, 16 SemanticMatches, 6519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107237 ImplicationChecksByTransitivity, 292886.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11517occurred in iteration=118, InterpolantAutomatonStates: 3599, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9272.3ms AutomataMinimizationTime, 118 MinimizatonAttempts, 179327 StatesRemovedByMinimization, 105 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1983.2ms SsaConstructionTime, 27210.0ms SatisfiabilityAnalysisTime, 161721.7ms InterpolantComputationTime, 6526 NumberOfCodeBlocks, 6471 NumberOfCodeBlocksAsserted, 585 NumberOfCheckSat, 6298 ConstructedInterpolants, 808 QuantifiedInterpolants, 88837 SizeOfPredicates, 1328 NumberOfNonLiveVariables, 26346 ConjunctsInSsa, 3925 ConjunctsInUnsatCore, 228 InterpolantComputations, 10 PerfectInterpolantSequences, 6245/23562 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown