/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/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:25:24,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:25:24,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:25:24,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:25:24,887 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 16:25:24,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:25:24,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:25:24,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:25:24,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:25:24,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:25:24,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:25:24,949 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:25:24,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:25:24,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:25:24,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:25:24,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:25:24,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:25:24,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:25:24,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:25:24,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:25:24,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:25:24,954 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:25:24,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:25:24,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:25:24,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:25:24,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:25:24,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:25:24,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:25:24,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:25:24,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:25:24,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:25:24,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:25:24,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:25:24,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:25:24,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:25:24,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:25:24,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:25:24,971 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:25:25,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:25:25,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:25:25,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:25:25,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:25:25,374 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:25:25,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-08 16:25:25,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d933c8b62/ecd8e324771349d28d9bfb4642af575d/FLAG7286f1d88 [2021-10-08 16:25:26,004 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:25:26,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-08 16:25:26,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d933c8b62/ecd8e324771349d28d9bfb4642af575d/FLAG7286f1d88 [2021-10-08 16:25:26,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d933c8b62/ecd8e324771349d28d9bfb4642af575d [2021-10-08 16:25:26,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:25:26,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:25:26,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:25:26,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:25:26,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:25:26,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124aa8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26, skipping insertion in model container [2021-10-08 16:25:26,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:25:26,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:25:26,606 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/test-easy11.wvr.c[1888,1901] [2021-10-08 16:25:26,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:25:26,618 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:25:26,641 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/test-easy11.wvr.c[1888,1901] [2021-10-08 16:25:26,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:25:26,659 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:25:26,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26 WrapperNode [2021-10-08 16:25:26,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:25:26,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:25:26,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:25:26,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:25:26,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:25:26,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:25:26,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:25:26,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:25:26,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:25:26,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:25:26,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:25:26,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:25:26,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (1/1) ... [2021-10-08 16:25:26,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:25:26,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:26,776 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 16:25:26,799 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 16:25:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:25:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:25:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:25:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:25:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:25:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:25:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:25:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:25:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:25:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:25:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:25:26,852 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 16:25:27,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:25:27,301 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 16:25:27,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:25:27 BoogieIcfgContainer [2021-10-08 16:25:27,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:25:27,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:25:27,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:25:27,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:25:27,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:25:26" (1/3) ... [2021-10-08 16:25:27,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c39769e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:25:27, skipping insertion in model container [2021-10-08 16:25:27,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:25:26" (2/3) ... [2021-10-08 16:25:27,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c39769e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:25:27, skipping insertion in model container [2021-10-08 16:25:27,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:25:27" (3/3) ... [2021-10-08 16:25:27,319 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2021-10-08 16:25:27,327 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:25:27,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:25:27,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-08 16:25:27,328 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:25:27,384 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,385 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,385 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,385 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,386 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,387 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,387 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,388 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,388 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,388 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,388 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,389 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,389 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,390 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,392 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,392 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,393 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,393 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,394 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,394 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,394 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,395 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,395 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,395 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,396 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,397 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,398 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,400 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,401 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,401 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,402 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,404 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,404 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,405 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,405 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,406 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,406 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,406 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,407 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,408 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,408 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,408 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,408 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,409 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,409 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,409 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,409 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,410 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,411 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,411 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,411 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,412 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,412 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,412 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,413 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,413 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,414 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,414 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,415 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,416 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,417 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,417 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,418 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,418 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,431 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,432 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,432 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:25:27,455 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 16:25:27,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:25:27,551 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 16:25:27,551 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-10-08 16:25:27,585 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:25:27,608 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions, 204 flow [2021-10-08 16:25:27,611 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 94 transitions, 204 flow [2021-10-08 16:25:27,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 204 flow [2021-10-08 16:25:27,671 INFO L129 PetriNetUnfolder]: 6/92 cut-off events. [2021-10-08 16:25:27,671 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 16:25:27,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 6/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-10-08 16:25:27,684 INFO L116 LiptonReduction]: Number of co-enabled transitions 1292 [2021-10-08 16:25:30,824 INFO L131 LiptonReduction]: Checked pairs total: 2468 [2021-10-08 16:25:30,825 INFO L133 LiptonReduction]: Total number of compositions: 80 [2021-10-08 16:25:30,834 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 29 transitions, 74 flow [2021-10-08 16:25:30,860 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 188 states, 164 states have (on average 2.75) internal successors, (451), 187 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 164 states have (on average 2.75) internal successors, (451), 187 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:25:30,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:30,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:25:30,871 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:30,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:30,877 INFO L82 PathProgramCache]: Analyzing trace with hash 11153737, now seen corresponding path program 1 times [2021-10-08 16:25:30,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:30,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024618752] [2021-10-08 16:25:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:30,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,060 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 16:25:31,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024618752] [2021-10-08 16:25:31,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024618752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:31,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:31,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:25:31,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186494846] [2021-10-08 16:25:31,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 16:25:31,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:31,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 16:25:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 16:25:31,090 INFO L87 Difference]: Start difference. First operand has 188 states, 164 states have (on average 2.75) internal successors, (451), 187 states have internal predecessors, (451), 0 states have call successors, (0), 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 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:31,114 INFO L93 Difference]: Finished difference Result 150 states and 358 transitions. [2021-10-08 16:25:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 16:25:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 16:25:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:31,130 INFO L225 Difference]: With dead ends: 150 [2021-10-08 16:25:31,130 INFO L226 Difference]: Without dead ends: 150 [2021-10-08 16:25:31,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 16:25:31,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-08 16:25:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-08 16:25:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 2.651851851851852) internal successors, (358), 149 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2021-10-08 16:25:31,188 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 4 [2021-10-08 16:25:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:31,189 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2021-10-08 16:25:31,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2021-10-08 16:25:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:25:31,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:31,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:25:31,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:25:31,191 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:31,192 INFO L82 PathProgramCache]: Analyzing trace with hash 11153755, now seen corresponding path program 1 times [2021-10-08 16:25:31,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:31,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062973521] [2021-10-08 16:25:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,254 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 16:25:31,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062973521] [2021-10-08 16:25:31,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062973521] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:31,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:31,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:25:31,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541497716] [2021-10-08 16:25:31,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:25:31,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:31,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:25:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,259 INFO L87 Difference]: Start difference. First operand 150 states and 358 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:31,306 INFO L93 Difference]: Finished difference Result 132 states and 314 transitions. [2021-10-08 16:25:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:25:31,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 16:25:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:31,312 INFO L225 Difference]: With dead ends: 132 [2021-10-08 16:25:31,313 INFO L226 Difference]: Without dead ends: 132 [2021-10-08 16:25:31,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-08 16:25:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-08 16:25:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 121 states have (on average 2.5950413223140494) internal successors, (314), 131 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 314 transitions. [2021-10-08 16:25:31,337 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 314 transitions. Word has length 4 [2021-10-08 16:25:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:31,338 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 314 transitions. [2021-10-08 16:25:31,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 314 transitions. [2021-10-08 16:25:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:25:31,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:31,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:25:31,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 16:25:31,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:31,343 INFO L82 PathProgramCache]: Analyzing trace with hash 11153742, now seen corresponding path program 1 times [2021-10-08 16:25:31,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:31,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356590639] [2021-10-08 16:25:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,466 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 16:25:31,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356590639] [2021-10-08 16:25:31,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356590639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:31,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:31,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:25:31,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663544065] [2021-10-08 16:25:31,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:25:31,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:25:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,470 INFO L87 Difference]: Start difference. First operand 132 states and 314 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:31,530 INFO L93 Difference]: Finished difference Result 116 states and 273 transitions. [2021-10-08 16:25:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:25:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 16:25:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:31,533 INFO L225 Difference]: With dead ends: 116 [2021-10-08 16:25:31,533 INFO L226 Difference]: Without dead ends: 116 [2021-10-08 16:25:31,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-08 16:25:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-08 16:25:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 108 states have (on average 2.5277777777777777) internal successors, (273), 115 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 273 transitions. [2021-10-08 16:25:31,543 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 273 transitions. Word has length 4 [2021-10-08 16:25:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:31,544 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 273 transitions. [2021-10-08 16:25:31,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 273 transitions. [2021-10-08 16:25:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:25:31,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:31,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:25:31,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 16:25:31,546 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:31,546 INFO L82 PathProgramCache]: Analyzing trace with hash 345766191, now seen corresponding path program 1 times [2021-10-08 16:25:31,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:31,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941476293] [2021-10-08 16:25:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,592 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 16:25:31,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941476293] [2021-10-08 16:25:31,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941476293] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:31,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:31,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:25:31,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035424005] [2021-10-08 16:25:31,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:25:31,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:25:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,595 INFO L87 Difference]: Start difference. First operand 116 states and 273 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 16:25:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:31,638 INFO L93 Difference]: Finished difference Result 100 states and 232 transitions. [2021-10-08 16:25:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:25:31,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 16:25:31,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:31,640 INFO L225 Difference]: With dead ends: 100 [2021-10-08 16:25:31,640 INFO L226 Difference]: Without dead ends: 100 [2021-10-08 16:25:31,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-08 16:25:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-08 16:25:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 2.442105263157895) internal successors, (232), 99 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 232 transitions. [2021-10-08 16:25:31,652 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 232 transitions. Word has length 5 [2021-10-08 16:25:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:31,652 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 232 transitions. [2021-10-08 16:25:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 16:25:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 232 transitions. [2021-10-08 16:25:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:25:31,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:31,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:25:31,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-08 16:25:31,654 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:31,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2129953618, now seen corresponding path program 1 times [2021-10-08 16:25:31,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:31,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393067058] [2021-10-08 16:25:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,694 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 16:25:31,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393067058] [2021-10-08 16:25:31,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393067058] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:31,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:31,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:25:31,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216587055] [2021-10-08 16:25:31,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:25:31,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:31,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:25:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,698 INFO L87 Difference]: Start difference. First operand 100 states and 232 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:25:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:31,718 INFO L93 Difference]: Finished difference Result 88 states and 203 transitions. [2021-10-08 16:25:31,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:25:31,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:25:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:31,720 INFO L225 Difference]: With dead ends: 88 [2021-10-08 16:25:31,720 INFO L226 Difference]: Without dead ends: 88 [2021-10-08 16:25:31,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-08 16:25:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-08 16:25:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.4166666666666665) internal successors, (203), 87 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 203 transitions. [2021-10-08 16:25:31,727 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 203 transitions. Word has length 6 [2021-10-08 16:25:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:31,727 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 203 transitions. [2021-10-08 16:25:31,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:25:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 203 transitions. [2021-10-08 16:25:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:25:31,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:31,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 16:25:31,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 16:25:31,729 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:31,730 INFO L82 PathProgramCache]: Analyzing trace with hash 2129953586, now seen corresponding path program 1 times [2021-10-08 16:25:31,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:31,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587576358] [2021-10-08 16:25:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,777 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 16:25:31,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587576358] [2021-10-08 16:25:31,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587576358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:31,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:31,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:25:31,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942669438] [2021-10-08 16:25:31,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:25:31,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:25:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,781 INFO L87 Difference]: Start difference. First operand 88 states and 203 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:25:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:31,823 INFO L93 Difference]: Finished difference Result 80 states and 181 transitions. [2021-10-08 16:25:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:25:31,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:25:31,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:31,825 INFO L225 Difference]: With dead ends: 80 [2021-10-08 16:25:31,825 INFO L226 Difference]: Without dead ends: 80 [2021-10-08 16:25:31,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:31,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-08 16:25:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-10-08 16:25:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 2.3815789473684212) internal successors, (181), 79 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 181 transitions. [2021-10-08 16:25:31,831 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 181 transitions. Word has length 6 [2021-10-08 16:25:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:31,831 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 181 transitions. [2021-10-08 16:25:31,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 16:25:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 181 transitions. [2021-10-08 16:25:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:25:31,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:31,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:31,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 16:25:31,833 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:31,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:31,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1604051996, now seen corresponding path program 1 times [2021-10-08 16:25:31,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:31,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666660799] [2021-10-08 16:25:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:31,869 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 16:25:31,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:31,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666660799] [2021-10-08 16:25:31,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666660799] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:31,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:31,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:25:31,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743544898] [2021-10-08 16:25:31,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:25:31,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:25:31,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,872 INFO L87 Difference]: Start difference. First operand 80 states and 181 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 16:25:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:31,899 INFO L93 Difference]: Finished difference Result 72 states and 159 transitions. [2021-10-08 16:25:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:25:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 16:25:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:31,901 INFO L225 Difference]: With dead ends: 72 [2021-10-08 16:25:31,901 INFO L226 Difference]: Without dead ends: 72 [2021-10-08 16:25:31,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:25:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-08 16:25:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-08 16:25:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 2.338235294117647) internal successors, (159), 71 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 159 transitions. [2021-10-08 16:25:31,906 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 159 transitions. Word has length 7 [2021-10-08 16:25:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:31,906 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 159 transitions. [2021-10-08 16:25:31,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 16:25:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 159 transitions. [2021-10-08 16:25:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:25:31,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:31,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:31,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 16:25:31,909 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:31,909 INFO L82 PathProgramCache]: Analyzing trace with hash 381120419, now seen corresponding path program 1 times [2021-10-08 16:25:31,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:31,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223969504] [2021-10-08 16:25:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:31,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:32,002 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 16:25:32,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:32,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223969504] [2021-10-08 16:25:32,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223969504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:32,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:32,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:32,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209424374] [2021-10-08 16:25:32,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:32,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:32,006 INFO L87 Difference]: Start difference. First operand 72 states and 159 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:32,144 INFO L93 Difference]: Finished difference Result 96 states and 225 transitions. [2021-10-08 16:25:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:25:32,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 16:25:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:32,146 INFO L225 Difference]: With dead ends: 96 [2021-10-08 16:25:32,146 INFO L226 Difference]: Without dead ends: 96 [2021-10-08 16:25:32,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:25:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-08 16:25:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2021-10-08 16:25:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 81 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 193 transitions. [2021-10-08 16:25:32,152 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 193 transitions. Word has length 10 [2021-10-08 16:25:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:32,153 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 193 transitions. [2021-10-08 16:25:32,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 193 transitions. [2021-10-08 16:25:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:25:32,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:32,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:32,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 16:25:32,156 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:32,156 INFO L82 PathProgramCache]: Analyzing trace with hash 379319009, now seen corresponding path program 2 times [2021-10-08 16:25:32,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:32,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009181125] [2021-10-08 16:25:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:32,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:32,240 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 16:25:32,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:32,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009181125] [2021-10-08 16:25:32,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009181125] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:32,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:32,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:32,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468880644] [2021-10-08 16:25:32,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:32,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:32,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:32,250 INFO L87 Difference]: Start difference. First operand 82 states and 193 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:32,358 INFO L93 Difference]: Finished difference Result 90 states and 211 transitions. [2021-10-08 16:25:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:25:32,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 16:25:32,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:32,360 INFO L225 Difference]: With dead ends: 90 [2021-10-08 16:25:32,360 INFO L226 Difference]: Without dead ends: 90 [2021-10-08 16:25:32,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 47.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:25:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-08 16:25:32,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2021-10-08 16:25:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 81 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 193 transitions. [2021-10-08 16:25:32,368 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 193 transitions. Word has length 10 [2021-10-08 16:25:32,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:32,369 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 193 transitions. [2021-10-08 16:25:32,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 193 transitions. [2021-10-08 16:25:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:25:32,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:32,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:32,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 16:25:32,376 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:32,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:32,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1307682928, now seen corresponding path program 1 times [2021-10-08 16:25:32,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:32,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145923611] [2021-10-08 16:25:32,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:32,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:32,487 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 16:25:32,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:32,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145923611] [2021-10-08 16:25:32,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145923611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:32,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:32,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:32,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825737462] [2021-10-08 16:25:32,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:32,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:32,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:32,492 INFO L87 Difference]: Start difference. First operand 82 states and 193 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:32,601 INFO L93 Difference]: Finished difference Result 96 states and 226 transitions. [2021-10-08 16:25:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:32,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 16:25:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:32,603 INFO L225 Difference]: With dead ends: 96 [2021-10-08 16:25:32,603 INFO L226 Difference]: Without dead ends: 96 [2021-10-08 16:25:32,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:25:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-08 16:25:32,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-10-08 16:25:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.5238095238095237) internal successors, (212), 87 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 212 transitions. [2021-10-08 16:25:32,608 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 212 transitions. Word has length 10 [2021-10-08 16:25:32,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:32,609 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 212 transitions. [2021-10-08 16:25:32,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,609 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 212 transitions. [2021-10-08 16:25:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:25:32,610 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:32,610 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:32,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 16:25:32,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:32,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:32,611 INFO L82 PathProgramCache]: Analyzing trace with hash 507216188, now seen corresponding path program 2 times [2021-10-08 16:25:32,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:32,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048073644] [2021-10-08 16:25:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:32,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:32,663 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 16:25:32,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:32,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048073644] [2021-10-08 16:25:32,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048073644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:32,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:32,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:32,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200367288] [2021-10-08 16:25:32,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:32,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:32,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:32,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:32,667 INFO L87 Difference]: Start difference. First operand 88 states and 212 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:32,757 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2021-10-08 16:25:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:25:32,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 16:25:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:32,759 INFO L225 Difference]: With dead ends: 92 [2021-10-08 16:25:32,760 INFO L226 Difference]: Without dead ends: 92 [2021-10-08 16:25:32,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:25:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-08 16:25:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-10-08 16:25:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.5238095238095237) internal successors, (212), 87 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 212 transitions. [2021-10-08 16:25:32,765 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 212 transitions. Word has length 10 [2021-10-08 16:25:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:32,765 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 212 transitions. [2021-10-08 16:25:32,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 212 transitions. [2021-10-08 16:25:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:25:32,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:32,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:32,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 16:25:32,767 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:32,768 INFO L82 PathProgramCache]: Analyzing trace with hash 507187358, now seen corresponding path program 3 times [2021-10-08 16:25:32,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:32,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639118744] [2021-10-08 16:25:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:32,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:32,821 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 16:25:32,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:32,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639118744] [2021-10-08 16:25:32,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639118744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:32,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:32,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:32,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422133127] [2021-10-08 16:25:32,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:32,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:32,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:32,825 INFO L87 Difference]: Start difference. First operand 88 states and 212 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:32,940 INFO L93 Difference]: Finished difference Result 108 states and 268 transitions. [2021-10-08 16:25:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:25:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 16:25:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:32,942 INFO L225 Difference]: With dead ends: 108 [2021-10-08 16:25:32,942 INFO L226 Difference]: Without dead ends: 108 [2021-10-08 16:25:32,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:25:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-08 16:25:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 90. [2021-10-08 16:25:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 2.5697674418604652) internal successors, (221), 89 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 221 transitions. [2021-10-08 16:25:32,947 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 221 transitions. Word has length 10 [2021-10-08 16:25:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:32,948 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 221 transitions. [2021-10-08 16:25:32,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:32,948 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 221 transitions. [2021-10-08 16:25:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:25:32,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:32,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:32,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 16:25:32,961 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:32,962 INFO L82 PathProgramCache]: Analyzing trace with hash 497298275, now seen corresponding path program 3 times [2021-10-08 16:25:32,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:32,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929826751] [2021-10-08 16:25:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:32,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,055 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 16:25:33,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:33,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929826751] [2021-10-08 16:25:33,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929826751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:33,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:33,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:33,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623070623] [2021-10-08 16:25:33,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:33,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:33,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:33,058 INFO L87 Difference]: Start difference. First operand 90 states and 221 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:33,149 INFO L93 Difference]: Finished difference Result 112 states and 278 transitions. [2021-10-08 16:25:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:33,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 16:25:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:33,151 INFO L225 Difference]: With dead ends: 112 [2021-10-08 16:25:33,151 INFO L226 Difference]: Without dead ends: 112 [2021-10-08 16:25:33,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:25:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-08 16:25:33,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 88. [2021-10-08 16:25:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 2.5238095238095237) internal successors, (212), 87 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 212 transitions. [2021-10-08 16:25:33,156 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 212 transitions. Word has length 10 [2021-10-08 16:25:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:33,156 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 212 transitions. [2021-10-08 16:25:33,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 212 transitions. [2021-10-08 16:25:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:33,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:33,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:33,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 16:25:33,158 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:33,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:33,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1067175835, now seen corresponding path program 1 times [2021-10-08 16:25:33,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:33,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456940775] [2021-10-08 16:25:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:33,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,196 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 16:25:33,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:33,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456940775] [2021-10-08 16:25:33,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456940775] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:33,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:33,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:33,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829379071] [2021-10-08 16:25:33,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:33,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:33,199 INFO L87 Difference]: Start difference. First operand 88 states and 212 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:33,272 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2021-10-08 16:25:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:25:33,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:33,282 INFO L225 Difference]: With dead ends: 170 [2021-10-08 16:25:33,282 INFO L226 Difference]: Without dead ends: 170 [2021-10-08 16:25:33,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:25:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-08 16:25:33,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 114. [2021-10-08 16:25:33,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 2.4454545454545453) internal successors, (269), 113 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 269 transitions. [2021-10-08 16:25:33,292 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 269 transitions. Word has length 11 [2021-10-08 16:25:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:33,292 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 269 transitions. [2021-10-08 16:25:33,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,293 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 269 transitions. [2021-10-08 16:25:33,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:33,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:33,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:33,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 16:25:33,294 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:33,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1068051007, now seen corresponding path program 1 times [2021-10-08 16:25:33,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:33,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5020619] [2021-10-08 16:25:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:33,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,358 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 16:25:33,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:33,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5020619] [2021-10-08 16:25:33,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5020619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:33,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:33,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:33,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40975689] [2021-10-08 16:25:33,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:33,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:33,360 INFO L87 Difference]: Start difference. First operand 114 states and 269 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:33,417 INFO L93 Difference]: Finished difference Result 122 states and 281 transitions. [2021-10-08 16:25:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:33,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:33,419 INFO L225 Difference]: With dead ends: 122 [2021-10-08 16:25:33,419 INFO L226 Difference]: Without dead ends: 118 [2021-10-08 16:25:33,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-08 16:25:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2021-10-08 16:25:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 2.4285714285714284) internal successors, (272), 115 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 272 transitions. [2021-10-08 16:25:33,425 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 272 transitions. Word has length 11 [2021-10-08 16:25:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:33,425 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 272 transitions. [2021-10-08 16:25:33,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 272 transitions. [2021-10-08 16:25:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:33,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:33,426 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:33,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 16:25:33,427 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:33,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1068069619, now seen corresponding path program 1 times [2021-10-08 16:25:33,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:33,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643958573] [2021-10-08 16:25:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:33,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,466 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 16:25:33,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:33,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643958573] [2021-10-08 16:25:33,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643958573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:33,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:33,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:33,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814089068] [2021-10-08 16:25:33,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:33,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:33,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:33,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:33,469 INFO L87 Difference]: Start difference. First operand 116 states and 272 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:33,531 INFO L93 Difference]: Finished difference Result 122 states and 278 transitions. [2021-10-08 16:25:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:33,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:33,533 INFO L225 Difference]: With dead ends: 122 [2021-10-08 16:25:33,533 INFO L226 Difference]: Without dead ends: 114 [2021-10-08 16:25:33,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-08 16:25:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-10-08 16:25:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 2.3363636363636364) internal successors, (257), 113 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 257 transitions. [2021-10-08 16:25:33,538 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 257 transitions. Word has length 11 [2021-10-08 16:25:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:33,539 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 257 transitions. [2021-10-08 16:25:33,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 257 transitions. [2021-10-08 16:25:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:33,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:33,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:33,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-08 16:25:33,541 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:33,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1070168629, now seen corresponding path program 2 times [2021-10-08 16:25:33,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:33,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609208278] [2021-10-08 16:25:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:33,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,577 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 16:25:33,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:33,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609208278] [2021-10-08 16:25:33,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609208278] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:33,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:33,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:33,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941291640] [2021-10-08 16:25:33,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:33,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:33,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:33,580 INFO L87 Difference]: Start difference. First operand 114 states and 257 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:33,631 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2021-10-08 16:25:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:33,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:33,633 INFO L225 Difference]: With dead ends: 118 [2021-10-08 16:25:33,633 INFO L226 Difference]: Without dead ends: 92 [2021-10-08 16:25:33,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-08 16:25:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-08 16:25:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 2.3295454545454546) internal successors, (205), 91 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 205 transitions. [2021-10-08 16:25:33,637 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 205 transitions. Word has length 11 [2021-10-08 16:25:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:33,638 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 205 transitions. [2021-10-08 16:25:33,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 205 transitions. [2021-10-08 16:25:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:33,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:33,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:33,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-08 16:25:33,639 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1854219700, now seen corresponding path program 1 times [2021-10-08 16:25:33,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:33,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839890607] [2021-10-08 16:25:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:33,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,671 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 16:25:33,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:33,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839890607] [2021-10-08 16:25:33,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839890607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:33,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418017167] [2021-10-08 16:25:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:33,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:33,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:33,676 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 16:25:33,700 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 16:25:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:33,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:25:33,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:33,813 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 16:25:33,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418017167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:33,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:33,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-08 16:25:33,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73822999] [2021-10-08 16:25:33,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:33,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:33,816 INFO L87 Difference]: Start difference. First operand 92 states and 205 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:33,931 INFO L93 Difference]: Finished difference Result 202 states and 444 transitions. [2021-10-08 16:25:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:25:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:33,933 INFO L225 Difference]: With dead ends: 202 [2021-10-08 16:25:33,933 INFO L226 Difference]: Without dead ends: 202 [2021-10-08 16:25:33,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-08 16:25:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 102. [2021-10-08 16:25:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 2.3877551020408165) internal successors, (234), 101 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 234 transitions. [2021-10-08 16:25:33,939 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 234 transitions. Word has length 11 [2021-10-08 16:25:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:33,939 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 234 transitions. [2021-10-08 16:25:33,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 234 transitions. [2021-10-08 16:25:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:33,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:33,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:33,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-08 16:25:34,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 16:25:34,155 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1852372658, now seen corresponding path program 1 times [2021-10-08 16:25:34,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172912556] [2021-10-08 16:25:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,184 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 16:25:34,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172912556] [2021-10-08 16:25:34,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172912556] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:34,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:34,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:34,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020387961] [2021-10-08 16:25:34,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:34,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:34,187 INFO L87 Difference]: Start difference. First operand 102 states and 234 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:34,260 INFO L93 Difference]: Finished difference Result 172 states and 375 transitions. [2021-10-08 16:25:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:25:34,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:34,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:34,262 INFO L225 Difference]: With dead ends: 172 [2021-10-08 16:25:34,262 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 16:25:34,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 16:25:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 106. [2021-10-08 16:25:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 102 states have (on average 2.450980392156863) internal successors, (250), 105 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 250 transitions. [2021-10-08 16:25:34,267 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 250 transitions. Word has length 11 [2021-10-08 16:25:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 250 transitions. [2021-10-08 16:25:34,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 250 transitions. [2021-10-08 16:25:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:34,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:34,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-08 16:25:34,269 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1883451398, now seen corresponding path program 2 times [2021-10-08 16:25:34,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058973981] [2021-10-08 16:25:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,297 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 16:25:34,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058973981] [2021-10-08 16:25:34,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058973981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:34,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:34,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:34,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576558451] [2021-10-08 16:25:34,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:34,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:34,300 INFO L87 Difference]: Start difference. First operand 106 states and 250 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:34,368 INFO L93 Difference]: Finished difference Result 150 states and 329 transitions. [2021-10-08 16:25:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:34,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:34,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:34,370 INFO L225 Difference]: With dead ends: 150 [2021-10-08 16:25:34,370 INFO L226 Difference]: Without dead ends: 150 [2021-10-08 16:25:34,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:25:34,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-08 16:25:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 112. [2021-10-08 16:25:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 2.435185185185185) internal successors, (263), 111 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 263 transitions. [2021-10-08 16:25:34,376 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 263 transitions. Word has length 11 [2021-10-08 16:25:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:34,376 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 263 transitions. [2021-10-08 16:25:34,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 263 transitions. [2021-10-08 16:25:34,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:34,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:34,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:34,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-08 16:25:34,378 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1883464915, now seen corresponding path program 2 times [2021-10-08 16:25:34,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132725044] [2021-10-08 16:25:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,415 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 16:25:34,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132725044] [2021-10-08 16:25:34,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132725044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:34,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:34,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:34,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258954516] [2021-10-08 16:25:34,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:34,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:34,418 INFO L87 Difference]: Start difference. First operand 112 states and 263 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:34,465 INFO L93 Difference]: Finished difference Result 114 states and 264 transitions. [2021-10-08 16:25:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:34,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:34,467 INFO L225 Difference]: With dead ends: 114 [2021-10-08 16:25:34,467 INFO L226 Difference]: Without dead ends: 110 [2021-10-08 16:25:34,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-08 16:25:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-10-08 16:25:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 2.4134615384615383) internal successors, (251), 107 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 251 transitions. [2021-10-08 16:25:34,471 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 251 transitions. Word has length 11 [2021-10-08 16:25:34,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:34,472 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 251 transitions. [2021-10-08 16:25:34,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 251 transitions. [2021-10-08 16:25:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:34,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:34,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:34,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-08 16:25:34,473 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1883463985, now seen corresponding path program 3 times [2021-10-08 16:25:34,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341346110] [2021-10-08 16:25:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,511 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 16:25:34,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341346110] [2021-10-08 16:25:34,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341346110] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:34,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:34,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:34,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364146336] [2021-10-08 16:25:34,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:34,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:34,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:34,513 INFO L87 Difference]: Start difference. First operand 108 states and 251 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:34,571 INFO L93 Difference]: Finished difference Result 106 states and 248 transitions. [2021-10-08 16:25:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:34,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:34,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:34,573 INFO L225 Difference]: With dead ends: 106 [2021-10-08 16:25:34,573 INFO L226 Difference]: Without dead ends: 100 [2021-10-08 16:25:34,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-08 16:25:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-10-08 16:25:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 2.4) internal successors, (228), 97 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 228 transitions. [2021-10-08 16:25:34,598 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 228 transitions. Word has length 11 [2021-10-08 16:25:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:34,598 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 228 transitions. [2021-10-08 16:25:34,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 228 transitions. [2021-10-08 16:25:34,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:34,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:34,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:34,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-08 16:25:34,600 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1881378007, now seen corresponding path program 3 times [2021-10-08 16:25:34,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91984549] [2021-10-08 16:25:34,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,652 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 16:25:34,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91984549] [2021-10-08 16:25:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91984549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:34,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:34,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-08 16:25:34,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200559333] [2021-10-08 16:25:34,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:25:34,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:25:34,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:25:34,655 INFO L87 Difference]: Start difference. First operand 98 states and 228 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:34,705 INFO L93 Difference]: Finished difference Result 94 states and 221 transitions. [2021-10-08 16:25:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:34,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:34,707 INFO L225 Difference]: With dead ends: 94 [2021-10-08 16:25:34,707 INFO L226 Difference]: Without dead ends: 84 [2021-10-08 16:25:34,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-08 16:25:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2021-10-08 16:25:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.423076923076923) internal successors, (189), 79 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 189 transitions. [2021-10-08 16:25:34,711 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 189 transitions. Word has length 11 [2021-10-08 16:25:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:34,711 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 189 transitions. [2021-10-08 16:25:34,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 189 transitions. [2021-10-08 16:25:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:34,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:34,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:34,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-08 16:25:34,713 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1863503353, now seen corresponding path program 2 times [2021-10-08 16:25:34,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017145906] [2021-10-08 16:25:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,740 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 16:25:34,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017145906] [2021-10-08 16:25:34,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017145906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:34,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:34,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:34,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80302110] [2021-10-08 16:25:34,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:34,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:34,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:34,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:34,743 INFO L87 Difference]: Start difference. First operand 80 states and 189 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:34,824 INFO L93 Difference]: Finished difference Result 132 states and 293 transitions. [2021-10-08 16:25:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:25:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:34,826 INFO L225 Difference]: With dead ends: 132 [2021-10-08 16:25:34,826 INFO L226 Difference]: Without dead ends: 124 [2021-10-08 16:25:34,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:25:34,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-08 16:25:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 80. [2021-10-08 16:25:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.3974358974358974) internal successors, (187), 79 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 187 transitions. [2021-10-08 16:25:34,830 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 187 transitions. Word has length 11 [2021-10-08 16:25:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:34,831 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 187 transitions. [2021-10-08 16:25:34,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 187 transitions. [2021-10-08 16:25:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:34,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:34,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:34,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-08 16:25:34,832 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1456166670, now seen corresponding path program 3 times [2021-10-08 16:25:34,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284722427] [2021-10-08 16:25:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,864 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 16:25:34,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284722427] [2021-10-08 16:25:34,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284722427] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:34,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:34,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:34,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921113743] [2021-10-08 16:25:34,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:34,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:34,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:34,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:34,867 INFO L87 Difference]: Start difference. First operand 80 states and 187 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:34,921 INFO L93 Difference]: Finished difference Result 132 states and 302 transitions. [2021-10-08 16:25:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:25:34,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:34,923 INFO L225 Difference]: With dead ends: 132 [2021-10-08 16:25:34,923 INFO L226 Difference]: Without dead ends: 120 [2021-10-08 16:25:34,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:25:34,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-08 16:25:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 82. [2021-10-08 16:25:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.4) internal successors, (192), 81 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 192 transitions. [2021-10-08 16:25:34,927 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 192 transitions. Word has length 11 [2021-10-08 16:25:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:34,928 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 192 transitions. [2021-10-08 16:25:34,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 192 transitions. [2021-10-08 16:25:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:34,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:34,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:34,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-08 16:25:34,929 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1751345942, now seen corresponding path program 2 times [2021-10-08 16:25:34,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:34,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727108924] [2021-10-08 16:25:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:34,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:34,955 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 16:25:34,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:34,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727108924] [2021-10-08 16:25:34,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727108924] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:34,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632349448] [2021-10-08 16:25:34,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:25:34,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:34,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:34,957 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 16:25:34,975 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 16:25:35,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:25:35,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:35,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:25:35,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:35,048 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 16:25:35,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632349448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:35,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:35,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-08 16:25:35,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717363911] [2021-10-08 16:25:35,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:35,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:35,057 INFO L87 Difference]: Start difference. First operand 82 states and 192 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:35,133 INFO L93 Difference]: Finished difference Result 116 states and 266 transitions. [2021-10-08 16:25:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:25:35,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:35,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:35,138 INFO L225 Difference]: With dead ends: 116 [2021-10-08 16:25:35,138 INFO L226 Difference]: Without dead ends: 116 [2021-10-08 16:25:35,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-08 16:25:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 82. [2021-10-08 16:25:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.4) internal successors, (192), 81 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 192 transitions. [2021-10-08 16:25:35,146 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 192 transitions. Word has length 11 [2021-10-08 16:25:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:35,150 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 192 transitions. [2021-10-08 16:25:35,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 192 transitions. [2021-10-08 16:25:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:35,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:35,151 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:35,195 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 16:25:35,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-08 16:25:35,367 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:35,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1749498900, now seen corresponding path program 4 times [2021-10-08 16:25:35,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:35,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465086620] [2021-10-08 16:25:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:35,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:35,395 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 16:25:35,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:35,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465086620] [2021-10-08 16:25:35,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465086620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:35,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:35,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:35,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720322266] [2021-10-08 16:25:35,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:35,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:35,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:35,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:35,399 INFO L87 Difference]: Start difference. First operand 82 states and 192 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:35,454 INFO L93 Difference]: Finished difference Result 124 states and 288 transitions. [2021-10-08 16:25:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:25:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:35,456 INFO L225 Difference]: With dead ends: 124 [2021-10-08 16:25:35,456 INFO L226 Difference]: Without dead ends: 124 [2021-10-08 16:25:35,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:25:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-08 16:25:35,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 84. [2021-10-08 16:25:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 2.451219512195122) internal successors, (201), 83 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 201 transitions. [2021-10-08 16:25:35,460 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 201 transitions. Word has length 11 [2021-10-08 16:25:35,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:35,460 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 201 transitions. [2021-10-08 16:25:35,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,461 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 201 transitions. [2021-10-08 16:25:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:35,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:35,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:35,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-08 16:25:35,462 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1780577640, now seen corresponding path program 5 times [2021-10-08 16:25:35,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:35,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30060804] [2021-10-08 16:25:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:35,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:35,488 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 16:25:35,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:35,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30060804] [2021-10-08 16:25:35,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30060804] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:35,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:35,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:35,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128464829] [2021-10-08 16:25:35,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:35,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:35,491 INFO L87 Difference]: Start difference. First operand 84 states and 201 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:35,562 INFO L93 Difference]: Finished difference Result 120 states and 273 transitions. [2021-10-08 16:25:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:25:35,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:35,563 INFO L225 Difference]: With dead ends: 120 [2021-10-08 16:25:35,564 INFO L226 Difference]: Without dead ends: 114 [2021-10-08 16:25:35,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:25:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-10-08 16:25:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2021-10-08 16:25:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 2.426829268292683) internal successors, (199), 83 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 199 transitions. [2021-10-08 16:25:35,567 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 199 transitions. Word has length 11 [2021-10-08 16:25:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:35,568 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 199 transitions. [2021-10-08 16:25:35,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 199 transitions. [2021-10-08 16:25:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:25:35,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:35,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:35,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-08 16:25:35,570 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:35,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1760629595, now seen corresponding path program 3 times [2021-10-08 16:25:35,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:35,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968343785] [2021-10-08 16:25:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:35,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:35,600 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 16:25:35,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:35,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968343785] [2021-10-08 16:25:35,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968343785] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:25:35,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:25:35,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 16:25:35,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817523039] [2021-10-08 16:25:35,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:25:35,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:25:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:25:35,602 INFO L87 Difference]: Start difference. First operand 84 states and 199 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:35,661 INFO L93 Difference]: Finished difference Result 108 states and 244 transitions. [2021-10-08 16:25:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:25:35,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 16:25:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:35,662 INFO L225 Difference]: With dead ends: 108 [2021-10-08 16:25:35,663 INFO L226 Difference]: Without dead ends: 100 [2021-10-08 16:25:35,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:25:35,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-08 16:25:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2021-10-08 16:25:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.3461538461538463) internal successors, (183), 79 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 183 transitions. [2021-10-08 16:25:35,667 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 183 transitions. Word has length 11 [2021-10-08 16:25:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:35,667 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 183 transitions. [2021-10-08 16:25:35,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 183 transitions. [2021-10-08 16:25:35,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:25:35,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:35,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:35,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-08 16:25:35,669 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:35,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:35,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1046820087, now seen corresponding path program 1 times [2021-10-08 16:25:35,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:35,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298734707] [2021-10-08 16:25:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:35,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:35,731 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 16:25:35,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:35,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298734707] [2021-10-08 16:25:35,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298734707] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:35,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363373324] [2021-10-08 16:25:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:35,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:35,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:35,737 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 16:25:35,756 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 16:25:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:35,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:25:35,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:35,937 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 16:25:35,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363373324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:35,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:35,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:25:35,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528944633] [2021-10-08 16:25:35,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:25:35,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:35,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:25:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:25:35,940 INFO L87 Difference]: Start difference. First operand 80 states and 183 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:36,178 INFO L93 Difference]: Finished difference Result 94 states and 214 transitions. [2021-10-08 16:25:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:25:36,178 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:25:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:36,179 INFO L225 Difference]: With dead ends: 94 [2021-10-08 16:25:36,179 INFO L226 Difference]: Without dead ends: 78 [2021-10-08 16:25:36,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 162.9ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:25:36,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-08 16:25:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-08 16:25:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 2.210526315789474) internal successors, (168), 77 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 168 transitions. [2021-10-08 16:25:36,183 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 168 transitions. Word has length 12 [2021-10-08 16:25:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:36,183 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 168 transitions. [2021-10-08 16:25:36,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 168 transitions. [2021-10-08 16:25:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:25:36,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:36,185 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:36,224 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 16:25:36,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:36,386 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:36,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:36,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1105655607, now seen corresponding path program 2 times [2021-10-08 16:25:36,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:36,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980741423] [2021-10-08 16:25:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:36,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:36,454 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 16:25:36,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:36,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980741423] [2021-10-08 16:25:36,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980741423] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:36,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81527650] [2021-10-08 16:25:36,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:25:36,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:36,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:36,457 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 16:25:36,466 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 16:25:36,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:25:36,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:36,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:25:36,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:36,683 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 16:25:36,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81527650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:36,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:36,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:25:36,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385496630] [2021-10-08 16:25:36,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:25:36,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:25:36,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:25:36,687 INFO L87 Difference]: Start difference. First operand 78 states and 168 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:36,990 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2021-10-08 16:25:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:25:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:25:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:36,991 INFO L225 Difference]: With dead ends: 82 [2021-10-08 16:25:36,991 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 16:25:36,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 245.4ms TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:25:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 16:25:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-08 16:25:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 45 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 107 transitions. [2021-10-08 16:25:36,995 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 107 transitions. Word has length 12 [2021-10-08 16:25:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:36,995 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 107 transitions. [2021-10-08 16:25:36,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 107 transitions. [2021-10-08 16:25:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:25:36,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:36,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:37,037 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 16:25:37,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:37,206 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:37,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1833863952, now seen corresponding path program 1 times [2021-10-08 16:25:37,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:37,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8432166] [2021-10-08 16:25:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:37,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:37,276 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 16:25:37,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:37,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8432166] [2021-10-08 16:25:37,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8432166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:37,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848041123] [2021-10-08 16:25:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:37,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:37,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:37,279 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 16:25:37,285 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 16:25:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:37,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:25:37,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:37,484 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 16:25:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848041123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:37,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:37,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:25:37,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582524442] [2021-10-08 16:25:37,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:25:37,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:25:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:25:37,486 INFO L87 Difference]: Start difference. First operand 46 states and 107 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:37,654 INFO L93 Difference]: Finished difference Result 56 states and 132 transitions. [2021-10-08 16:25:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:25:37,656 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:25:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:37,656 INFO L225 Difference]: With dead ends: 56 [2021-10-08 16:25:37,656 INFO L226 Difference]: Without dead ends: 40 [2021-10-08 16:25:37,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:25:37,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-08 16:25:37,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-08 16:25:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 39 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 16:25:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 85 transitions. [2021-10-08 16:25:37,660 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 85 transitions. Word has length 12 [2021-10-08 16:25:37,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:37,661 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 85 transitions. [2021-10-08 16:25:37,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 85 transitions. [2021-10-08 16:25:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:25:37,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:37,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:37,692 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 16:25:37,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:37,879 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:37,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:37,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1615143406, now seen corresponding path program 2 times [2021-10-08 16:25:37,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:37,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809828322] [2021-10-08 16:25:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:37,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:37,940 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 16:25:37,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:37,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809828322] [2021-10-08 16:25:37,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809828322] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:37,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118353709] [2021-10-08 16:25:37,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:25:37,941 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:37,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:37,943 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 16:25:37,964 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 16:25:38,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:25:38,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:38,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:25:38,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:38,146 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 16:25:38,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118353709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:38,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:38,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:25:38,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056166489] [2021-10-08 16:25:38,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:25:38,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:25:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:25:38,148 INFO L87 Difference]: Start difference. First operand 40 states and 85 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:38,303 INFO L93 Difference]: Finished difference Result 56 states and 123 transitions. [2021-10-08 16:25:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:25:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:25:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:38,304 INFO L225 Difference]: With dead ends: 56 [2021-10-08 16:25:38,304 INFO L226 Difference]: Without dead ends: 48 [2021-10-08 16:25:38,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:25:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-08 16:25:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-08 16:25:38,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 99 transitions. [2021-10-08 16:25:38,307 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 99 transitions. Word has length 12 [2021-10-08 16:25:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:38,308 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 99 transitions. [2021-10-08 16:25:38,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 99 transitions. [2021-10-08 16:25:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:25:38,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:38,309 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:38,347 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 16:25:38,518 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,SelfDestructingSolverStorable32 [2021-10-08 16:25:38,519 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1646235166, now seen corresponding path program 3 times [2021-10-08 16:25:38,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:38,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618171662] [2021-10-08 16:25:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:38,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:38,576 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 16:25:38,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:38,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618171662] [2021-10-08 16:25:38,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618171662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:38,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024690364] [2021-10-08 16:25:38,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:25:38,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:38,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:38,579 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 16:25:38,595 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 16:25:38,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 16:25:38,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:38,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:25:38,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:38,779 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 16:25:38,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024690364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:38,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:38,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-08 16:25:38,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860007158] [2021-10-08 16:25:38,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:25:38,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:38,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:25:38,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:25:38,784 INFO L87 Difference]: Start difference. First operand 48 states and 99 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:38,929 INFO L93 Difference]: Finished difference Result 52 states and 105 transitions. [2021-10-08 16:25:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:25:38,929 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:25:38,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:38,930 INFO L225 Difference]: With dead ends: 52 [2021-10-08 16:25:38,930 INFO L226 Difference]: Without dead ends: 44 [2021-10-08 16:25:38,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:25:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-08 16:25:38,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-10-08 16:25:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 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 16:25:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 88 transitions. [2021-10-08 16:25:38,933 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 88 transitions. Word has length 12 [2021-10-08 16:25:38,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:38,935 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 88 transitions. [2021-10-08 16:25:38,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:38,935 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 88 transitions. [2021-10-08 16:25:38,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:25:38,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:38,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:25:38,972 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 16:25:39,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:39,145 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2021-10-08 16:25:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:39,145 INFO L82 PathProgramCache]: Analyzing trace with hash 144174448, now seen corresponding path program 4 times [2021-10-08 16:25:39,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:39,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821339968] [2021-10-08 16:25:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:39,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:39,212 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 16:25:39,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:39,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821339968] [2021-10-08 16:25:39,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821339968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:39,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18369954] [2021-10-08 16:25:39,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:25:39,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:39,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:39,214 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 16:25:39,229 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 16:25:39,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:25:39,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:39,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:25:39,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:39,426 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 16:25:39,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18369954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:39,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:39,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-08 16:25:39,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194201661] [2021-10-08 16:25:39,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:25:39,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:25:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:25:39,429 INFO L87 Difference]: Start difference. First operand 42 states and 88 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:39,662 INFO L93 Difference]: Finished difference Result 50 states and 108 transitions. [2021-10-08 16:25:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:25:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:25:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:39,664 INFO L225 Difference]: With dead ends: 50 [2021-10-08 16:25:39,664 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 16:25:39,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 214.3ms TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:25:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 16:25:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 16:25:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 16:25:39,665 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-08 16:25:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:39,666 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 16:25:39,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 16:25:39,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 16:25:39,669 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,670 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:25:39,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:25:39,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,673 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:39,715 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 16:25:39,875 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,SelfDestructingSolverStorable34 [2021-10-08 16:25:39,884 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:25:39,884 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:25:39,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:25:39 BasicIcfg [2021-10-08 16:25:39,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:25:39,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 16:25:39,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 16:25:39,887 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 16:25:39,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:25:27" (3/4) ... [2021-10-08 16:25:39,890 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 16:25:39,897 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 16:25:39,897 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 16:25:39,901 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-08 16:25:39,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 16:25:39,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:25:39,902 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 16:25:39,949 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/test-easy11.wvr.c-witness.graphml [2021-10-08 16:25:39,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 16:25:39,954 INFO L168 Benchmark]: Toolchain (without parser) took 13573.93 ms. Allocated memory was 155.2 MB in the beginning and 232.8 MB in the end (delta: 77.6 MB). Free memory was 131.0 MB in the beginning and 177.5 MB in the end (delta: -46.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:39,954 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:25:39,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.21 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 120.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:39,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.49 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 119.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:39,956 INFO L168 Benchmark]: Boogie Preprocessor took 28.28 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 117.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:39,956 INFO L168 Benchmark]: RCFGBuilder took 568.56 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 105.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:39,957 INFO L168 Benchmark]: TraceAbstraction took 12578.02 ms. Allocated memory was 155.2 MB in the beginning and 232.8 MB in the end (delta: 77.6 MB). Free memory was 105.3 MB in the beginning and 180.1 MB in the end (delta: -74.8 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:39,957 INFO L168 Benchmark]: Witness Printer took 64.74 ms. Allocated memory is still 232.8 MB. Free memory was 179.6 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:39,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.21 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 120.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.49 ms. Allocated memory is still 155.2 MB. Free memory was 120.4 MB in the beginning and 119.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.28 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 117.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 568.56 ms. Allocated memory is still 155.2 MB. Free memory was 117.7 MB in the beginning and 105.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12578.02 ms. Allocated memory was 155.2 MB in the beginning and 232.8 MB in the end (delta: 77.6 MB). Free memory was 105.3 MB in the beginning and 180.1 MB in the end (delta: -74.8 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * Witness Printer took 64.74 ms. Allocated memory is still 232.8 MB. Free memory was 179.6 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3213.9ms, 95 PlacesBefore, 34 PlacesAfterwards, 94 TransitionsBefore, 29 TransitionsAfterwards, 1292 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 4 ChoiceCompositions, 80 TotalNumberOfCompositions, 2468 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1963, positive: 1873, positive conditional: 0, positive unconditional: 1873, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 797, positive: 774, positive conditional: 0, positive unconditional: 774, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 797, positive: 774, positive conditional: 0, positive unconditional: 774, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1963, positive: 1099, positive conditional: 0, positive unconditional: 1099, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 797, unknown conditional: 0, unknown unconditional: 797] , Statistics on independence cache: Total cache size (in pairs): 137, Positive cache size: 126, Positive conditional cache size: 0, Positive unconditional cache size: 126, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 12349.5ms, OverallIterations: 35, TraceHistogramMax: 1, EmptinessCheckTime: 48.7ms, AutomataDifference: 3380.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3308.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 711 SDtfs, 1222 SDslu, 1297 SDs, 0 SdLazy, 2658 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1647.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1612.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=0, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 234.9ms AutomataMinimizationTime, 35 MinimizatonAttempts, 560 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 111.0ms SsaConstructionTime, 410.9ms SatisfiabilityAnalysisTime, 2243.6ms InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1953 SizeOfPredicates, 14 NumberOfNonLiveVariables, 664 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 43 InterpolantComputations, 27 PerfectInterpolantSequences, 8/36 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 16:25:40,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...