/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:13:31,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:13:31,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:13:31,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:13:31,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:13:31,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:13:31,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:13:31,518 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 16:13:31,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:13:31,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:13:31,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:13:31,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:13:31,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:13:31,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:13:31,551 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:13:31,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:13:31,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:13:31,552 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:13:31,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:13:31,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:13:31,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:13:31,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 16:13:31,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:13:31,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 16:13:31,554 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-08 16:13:31,554 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:13:31,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 16:13:31,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:13:31,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 16:13:31,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:13:31,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:13:31,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:13:31,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:13:31,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:13:31,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:13:31,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 16:13:31,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 16:13:31,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 16:13:31,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 16:13:31,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:13:31,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:13:31,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:13:32,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:13:32,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:13:32,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:13:32,013 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:13:32,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-10-08 16:13:32,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc915a83/14a161bc1e1f46b191c1d22216ece333/FLAG551c1f334 [2021-10-08 16:13:32,819 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:13:32,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2021-10-08 16:13:32,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc915a83/14a161bc1e1f46b191c1d22216ece333/FLAG551c1f334 [2021-10-08 16:13:33,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cfc915a83/14a161bc1e1f46b191c1d22216ece333 [2021-10-08 16:13:33,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:13:33,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 16:13:33,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:13:33,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:13:33,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:13:33,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb32565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33, skipping insertion in model container [2021-10-08 16:13:33,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:13:33,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:13:33,517 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2091,2104] [2021-10-08 16:13:33,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:13:33,533 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:13:33,578 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c[2091,2104] [2021-10-08 16:13:33,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:13:33,601 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:13:33,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33 WrapperNode [2021-10-08 16:13:33,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:13:33,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:13:33,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:13:33,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:13:33,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:13:33,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:13:33,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:13:33,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:13:33,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:13:33,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:13:33,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:13:33,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:13:33,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (1/1) ... [2021-10-08 16:13:33,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:13:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:33,756 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 16:13:33,781 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 16:13:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:13:33,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:13:33,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:13:33,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:13:33,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 16:13:33,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:13:33,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 16:13:33,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:13:33,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:13:33,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:13:33,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:13:33,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 16:13:33,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:13:33,838 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 16:13:34,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:13:34,388 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 16:13:34,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:13:34 BoogieIcfgContainer [2021-10-08 16:13:34,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:13:34,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:13:34,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:13:34,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:13:34,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:13:33" (1/3) ... [2021-10-08 16:13:34,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3311f2cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:13:34, skipping insertion in model container [2021-10-08 16:13:34,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:13:33" (2/3) ... [2021-10-08 16:13:34,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3311f2cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:13:34, skipping insertion in model container [2021-10-08 16:13:34,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:13:34" (3/3) ... [2021-10-08 16:13:34,399 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2021-10-08 16:13:34,405 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 16:13:34,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:13:34,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 16:13:34,405 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:13:34,434 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,434 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,434 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,435 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,438 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,438 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,438 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,438 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,438 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,441 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,441 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,442 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,443 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,443 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,443 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,443 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,444 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,447 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,447 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,448 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,449 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,450 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,450 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,451 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,452 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,460 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:13:34,466 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 16:13:34,521 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:13:34,529 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 16:13:34,529 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-08 16:13:34,547 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:13:34,560 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-08 16:13:34,563 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-08 16:13:34,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2021-10-08 16:13:34,620 INFO L129 PetriNetUnfolder]: 6/89 cut-off events. [2021-10-08 16:13:34,620 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 16:13:34,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2021-10-08 16:13:34,628 INFO L116 LiptonReduction]: Number of co-enabled transitions 772 [2021-10-08 16:13:38,405 INFO L131 LiptonReduction]: Checked pairs total: 1036 [2021-10-08 16:13:38,405 INFO L133 LiptonReduction]: Total number of compositions: 88 [2021-10-08 16:13:38,416 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 16:13:38,434 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:13:38,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:38,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:13:38,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:38,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:38,449 INFO L82 PathProgramCache]: Analyzing trace with hash 12252197, now seen corresponding path program 1 times [2021-10-08 16:13:38,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:38,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480540609] [2021-10-08 16:13:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:38,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:38,645 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 16:13:38,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:38,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480540609] [2021-10-08 16:13:38,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480540609] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:38,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:38,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:13:38,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102466314] [2021-10-08 16:13:38,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:38,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:38,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:38,674 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 2.914285714285714) internal successors, (306), 130 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) 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 16:13:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:38,722 INFO L93 Difference]: Finished difference Result 134 states and 321 transitions. [2021-10-08 16:13:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 16:13:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:38,737 INFO L225 Difference]: With dead ends: 134 [2021-10-08 16:13:38,737 INFO L226 Difference]: Without dead ends: 134 [2021-10-08 16:13:38,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-08 16:13:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2021-10-08 16:13:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 2.9716981132075473) internal successors, (315), 126 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 315 transitions. [2021-10-08 16:13:38,790 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 315 transitions. Word has length 4 [2021-10-08 16:13:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:38,791 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 315 transitions. [2021-10-08 16:13:38,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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 16:13:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 315 transitions. [2021-10-08 16:13:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:13:38,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:38,792 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 16:13:38,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 16:13:38,794 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:38,794 INFO L82 PathProgramCache]: Analyzing trace with hash 12252232, now seen corresponding path program 1 times [2021-10-08 16:13:38,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:38,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551156088] [2021-10-08 16:13:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:38,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:38,875 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 16:13:38,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:38,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551156088] [2021-10-08 16:13:38,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551156088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:38,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:38,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:38,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351455392] [2021-10-08 16:13:38,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:38,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:38,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:38,881 INFO L87 Difference]: Start difference. First operand 127 states and 315 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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 16:13:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:38,910 INFO L93 Difference]: Finished difference Result 134 states and 305 transitions. [2021-10-08 16:13:38,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:38,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 16:13:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:38,915 INFO L225 Difference]: With dead ends: 134 [2021-10-08 16:13:38,916 INFO L226 Difference]: Without dead ends: 134 [2021-10-08 16:13:38,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-08 16:13:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 127. [2021-10-08 16:13:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 2.8207547169811322) internal successors, (299), 126 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 299 transitions. [2021-10-08 16:13:38,939 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 299 transitions. Word has length 4 [2021-10-08 16:13:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:38,943 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 299 transitions. [2021-10-08 16:13:38,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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 16:13:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 299 transitions. [2021-10-08 16:13:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:13:38,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:38,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:13:38,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 16:13:38,947 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:38,949 INFO L82 PathProgramCache]: Analyzing trace with hash 379819755, now seen corresponding path program 1 times [2021-10-08 16:13:38,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:38,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382968501] [2021-10-08 16:13:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:38,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,038 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 16:13:39,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:39,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382968501] [2021-10-08 16:13:39,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382968501] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:39,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072376958] [2021-10-08 16:13:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:39,042 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 16:13:39,045 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 16:13:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:39,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:39,181 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 16:13:39,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072376958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:39,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:39,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-08 16:13:39,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653484439] [2021-10-08 16:13:39,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:13:39,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:39,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:13:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:39,193 INFO L87 Difference]: Start difference. First operand 127 states and 299 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:39,305 INFO L93 Difference]: Finished difference Result 230 states and 523 transitions. [2021-10-08 16:13:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:13:39,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:13:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:39,313 INFO L225 Difference]: With dead ends: 230 [2021-10-08 16:13:39,313 INFO L226 Difference]: Without dead ends: 230 [2021-10-08 16:13:39,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-08 16:13:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 165. [2021-10-08 16:13:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 144 states have (on average 3.263888888888889) internal successors, (470), 164 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 470 transitions. [2021-10-08 16:13:39,344 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 470 transitions. Word has length 5 [2021-10-08 16:13:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:39,350 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 470 transitions. [2021-10-08 16:13:39,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 470 transitions. [2021-10-08 16:13:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:13:39,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:39,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:13:39,388 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 16:13:39,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:39,570 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:39,572 INFO L82 PathProgramCache]: Analyzing trace with hash 379819756, now seen corresponding path program 1 times [2021-10-08 16:13:39,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:39,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913816336] [2021-10-08 16:13:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,614 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 16:13:39,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:39,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913816336] [2021-10-08 16:13:39,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913816336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:39,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464989780] [2021-10-08 16:13:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:39,617 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 16:13:39,635 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 16:13:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:39,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:39,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:39,691 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 16:13:39,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464989780] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:39,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:39,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-08 16:13:39,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191422376] [2021-10-08 16:13:39,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:13:39,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:13:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:39,694 INFO L87 Difference]: Start difference. First operand 165 states and 470 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 16:13:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:39,748 INFO L93 Difference]: Finished difference Result 202 states and 557 transitions. [2021-10-08 16:13:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:13:39,748 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 16:13:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:39,751 INFO L225 Difference]: With dead ends: 202 [2021-10-08 16:13:39,751 INFO L226 Difference]: Without dead ends: 202 [2021-10-08 16:13:39,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-08 16:13:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 151. [2021-10-08 16:13:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 134 states have (on average 3.1791044776119404) internal successors, (426), 150 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 426 transitions. [2021-10-08 16:13:39,776 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 426 transitions. Word has length 5 [2021-10-08 16:13:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:39,777 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 426 transitions. [2021-10-08 16:13:39,777 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 16:13:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 426 transitions. [2021-10-08 16:13:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:13:39,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:39,778 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:13:39,806 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 16:13:39,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:39,989 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash 379819790, now seen corresponding path program 1 times [2021-10-08 16:13:39,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:39,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201014154] [2021-10-08 16:13:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:39,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,026 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 16:13:40,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:40,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201014154] [2021-10-08 16:13:40,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201014154] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:40,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:40,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:40,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017983112] [2021-10-08 16:13:40,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:40,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:40,029 INFO L87 Difference]: Start difference. First operand 151 states and 426 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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 16:13:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:40,039 INFO L93 Difference]: Finished difference Result 133 states and 358 transitions. [2021-10-08 16:13:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:40,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 16:13:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:40,041 INFO L225 Difference]: With dead ends: 133 [2021-10-08 16:13:40,041 INFO L226 Difference]: Without dead ends: 133 [2021-10-08 16:13:40,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-08 16:13:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-08 16:13:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 120 states have (on average 2.9833333333333334) internal successors, (358), 132 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 16:13:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 358 transitions. [2021-10-08 16:13:40,051 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 358 transitions. Word has length 5 [2021-10-08 16:13:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:40,052 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 358 transitions. [2021-10-08 16:13:40,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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 16:13:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 358 transitions. [2021-10-08 16:13:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:13:40,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:40,053 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 16:13:40,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 16:13:40,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash 379819791, now seen corresponding path program 1 times [2021-10-08 16:13:40,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:40,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856281556] [2021-10-08 16:13:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,092 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 16:13:40,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:40,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856281556] [2021-10-08 16:13:40,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856281556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:40,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636164026] [2021-10-08 16:13:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:40,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:40,095 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 16:13:40,117 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 16:13:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:40,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:40,167 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 16:13:40,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636164026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:40,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:40,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-08 16:13:40,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128894278] [2021-10-08 16:13:40,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 16:13:40,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:40,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 16:13:40,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:40,170 INFO L87 Difference]: Start difference. First operand 133 states and 358 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 16:13:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:40,190 INFO L93 Difference]: Finished difference Result 179 states and 455 transitions. [2021-10-08 16:13:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:13:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 5 [2021-10-08 16:13:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:40,193 INFO L225 Difference]: With dead ends: 179 [2021-10-08 16:13:40,193 INFO L226 Difference]: Without dead ends: 179 [2021-10-08 16:13:40,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:13:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-10-08 16:13:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 145. [2021-10-08 16:13:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 132 states have (on average 3.0) internal successors, (396), 144 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 396 transitions. [2021-10-08 16:13:40,202 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 396 transitions. Word has length 5 [2021-10-08 16:13:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:40,202 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 396 transitions. [2021-10-08 16:13:40,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 16:13:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 396 transitions. [2021-10-08 16:13:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:13:40,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:40,203 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 16:13:40,229 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 16:13:40,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:40,411 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:40,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1110487835, now seen corresponding path program 2 times [2021-10-08 16:13:40,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:40,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192808349] [2021-10-08 16:13:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:40,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:40,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192808349] [2021-10-08 16:13:40,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192808349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:40,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133536513] [2021-10-08 16:13:40,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:40,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:40,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:40,459 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 16:13:40,489 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 16:13:40,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:13:40,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:40,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:13:40,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:40,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133536513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:40,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:40,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-08 16:13:40,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436356796] [2021-10-08 16:13:40,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:13:40,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:40,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:13:40,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:40,564 INFO L87 Difference]: Start difference. First operand 145 states and 396 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 16:13:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:40,619 INFO L93 Difference]: Finished difference Result 271 states and 660 transitions. [2021-10-08 16:13:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:13:40,620 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 6 [2021-10-08 16:13:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:40,623 INFO L225 Difference]: With dead ends: 271 [2021-10-08 16:13:40,623 INFO L226 Difference]: Without dead ends: 271 [2021-10-08 16:13:40,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-10-08 16:13:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 169. [2021-10-08 16:13:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 156 states have (on average 3.1153846153846154) internal successors, (486), 168 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 486 transitions. [2021-10-08 16:13:40,632 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 486 transitions. Word has length 6 [2021-10-08 16:13:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:40,633 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 486 transitions. [2021-10-08 16:13:40,633 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 16:13:40,633 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 486 transitions. [2021-10-08 16:13:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 16:13:40,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:40,634 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-08 16:13:40,669 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 16:13:40,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:40,848 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:40,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:40,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1110487799, now seen corresponding path program 2 times [2021-10-08 16:13:40,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:40,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902030539] [2021-10-08 16:13:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:40,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:40,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:40,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902030539] [2021-10-08 16:13:40,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902030539] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:40,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845062401] [2021-10-08 16:13:40,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:40,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:40,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:40,895 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 16:13:40,914 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 16:13:40,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:13:40,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:40,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:13:40,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 16:13:40,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845062401] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:40,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:13:40,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-08 16:13:40,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557227229] [2021-10-08 16:13:40,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:40,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:40,974 INFO L87 Difference]: Start difference. First operand 169 states and 486 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:40,982 INFO L93 Difference]: Finished difference Result 149 states and 401 transitions. [2021-10-08 16:13:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:40,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 16:13:40,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:40,984 INFO L225 Difference]: With dead ends: 149 [2021-10-08 16:13:40,984 INFO L226 Difference]: Without dead ends: 149 [2021-10-08 16:13:40,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:13:40,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-10-08 16:13:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2021-10-08 16:13:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 124 states have (on average 2.782258064516129) internal successors, (345), 132 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 345 transitions. [2021-10-08 16:13:40,990 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 345 transitions. Word has length 6 [2021-10-08 16:13:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:40,991 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 345 transitions. [2021-10-08 16:13:40,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 345 transitions. [2021-10-08 16:13:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:13:40,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:40,992 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-08 16:13:41,026 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 16:13:41,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:41,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:41,208 INFO L82 PathProgramCache]: Analyzing trace with hash -65382869, now seen corresponding path program 3 times [2021-10-08 16:13:41,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:41,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020444442] [2021-10-08 16:13:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:41,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:41,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:41,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020444442] [2021-10-08 16:13:41,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020444442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:41,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755216312] [2021-10-08 16:13:41,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:13:41,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:41,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:41,256 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 16:13:41,279 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 16:13:41,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 16:13:41,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:41,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:13:41,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:41,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755216312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:41,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:41,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-08 16:13:41,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386358348] [2021-10-08 16:13:41,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:13:41,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:13:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:13:41,350 INFO L87 Difference]: Start difference. First operand 133 states and 345 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 16:13:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:41,402 INFO L93 Difference]: Finished difference Result 266 states and 622 transitions. [2021-10-08 16:13:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:13:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 7 [2021-10-08 16:13:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:41,405 INFO L225 Difference]: With dead ends: 266 [2021-10-08 16:13:41,405 INFO L226 Difference]: Without dead ends: 266 [2021-10-08 16:13:41,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:13:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-08 16:13:41,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 155. [2021-10-08 16:13:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 146 states have (on average 2.835616438356164) internal successors, (414), 154 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 414 transitions. [2021-10-08 16:13:41,413 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 414 transitions. Word has length 7 [2021-10-08 16:13:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:41,413 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 414 transitions. [2021-10-08 16:13:41,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 16:13:41,413 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 414 transitions. [2021-10-08 16:13:41,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:13:41,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:41,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:41,453 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 16:13:41,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:41,628 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:41,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 790752018, now seen corresponding path program 1 times [2021-10-08 16:13:41,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:41,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406836011] [2021-10-08 16:13:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:41,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:41,675 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 16:13:41,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:41,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406836011] [2021-10-08 16:13:41,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406836011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:41,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:41,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 16:13:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211056627] [2021-10-08 16:13:41,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:41,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:41,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:41,678 INFO L87 Difference]: Start difference. First operand 155 states and 414 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:41,696 INFO L93 Difference]: Finished difference Result 218 states and 584 transitions. [2021-10-08 16:13:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:41,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:13:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:41,699 INFO L225 Difference]: With dead ends: 218 [2021-10-08 16:13:41,699 INFO L226 Difference]: Without dead ends: 218 [2021-10-08 16:13:41,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-08 16:13:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 175. [2021-10-08 16:13:41,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 166 states have (on average 3.0421686746987953) internal successors, (505), 174 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 505 transitions. [2021-10-08 16:13:41,707 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 505 transitions. Word has length 8 [2021-10-08 16:13:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:41,708 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 505 transitions. [2021-10-08 16:13:41,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 505 transitions. [2021-10-08 16:13:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:13:41,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:41,709 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-08 16:13:41,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 16:13:41,710 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:41,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2026867291, now seen corresponding path program 4 times [2021-10-08 16:13:41,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:41,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981169938] [2021-10-08 16:13:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:41,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:41,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:41,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981169938] [2021-10-08 16:13:41,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981169938] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:41,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496550371] [2021-10-08 16:13:41,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:13:41,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:41,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:41,760 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 16:13:41,783 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 16:13:41,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:13:41,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:41,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:13:41,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:41,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496550371] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:41,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:41,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-08 16:13:41,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439465931] [2021-10-08 16:13:41,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:13:41,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:41,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:13:41,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:13:41,853 INFO L87 Difference]: Start difference. First operand 175 states and 505 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:41,918 INFO L93 Difference]: Finished difference Result 351 states and 881 transitions. [2021-10-08 16:13:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:13:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:13:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:41,922 INFO L225 Difference]: With dead ends: 351 [2021-10-08 16:13:41,923 INFO L226 Difference]: Without dead ends: 351 [2021-10-08 16:13:41,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:13:41,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-10-08 16:13:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 203. [2021-10-08 16:13:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 194 states have (on average 3.0618556701030926) internal successors, (594), 202 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 594 transitions. [2021-10-08 16:13:41,934 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 594 transitions. Word has length 8 [2021-10-08 16:13:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:41,935 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 594 transitions. [2021-10-08 16:13:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 594 transitions. [2021-10-08 16:13:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:13:41,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:41,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:41,977 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 16:13:42,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:42,152 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:42,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:42,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1256542876, now seen corresponding path program 1 times [2021-10-08 16:13:42,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:42,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107810044] [2021-10-08 16:13:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:42,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:42,190 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 16:13:42,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:42,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107810044] [2021-10-08 16:13:42,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107810044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:42,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316024340] [2021-10-08 16:13:42,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:42,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:42,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:42,193 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 16:13:42,197 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 16:13:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:42,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 16:13:42,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:42,337 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 16:13:42,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316024340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:42,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:42,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:13:42,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843612781] [2021-10-08 16:13:42,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:13:42,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:13:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:13:42,339 INFO L87 Difference]: Start difference. First operand 203 states and 594 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:42,370 INFO L93 Difference]: Finished difference Result 287 states and 805 transitions. [2021-10-08 16:13:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:13:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:13:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:42,373 INFO L225 Difference]: With dead ends: 287 [2021-10-08 16:13:42,373 INFO L226 Difference]: Without dead ends: 287 [2021-10-08 16:13:42,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:13:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-08 16:13:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 201. [2021-10-08 16:13:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 192 states have (on average 3.0572916666666665) internal successors, (587), 200 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 587 transitions. [2021-10-08 16:13:42,382 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 587 transitions. Word has length 9 [2021-10-08 16:13:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:42,383 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 587 transitions. [2021-10-08 16:13:42,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 587 transitions. [2021-10-08 16:13:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:13:42,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:42,384 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2021-10-08 16:13:42,418 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 16:13:42,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-08 16:13:42,599 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:42,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1591625067, now seen corresponding path program 5 times [2021-10-08 16:13:42,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:42,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114763555] [2021-10-08 16:13:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:42,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:42,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:42,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114763555] [2021-10-08 16:13:42,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114763555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:42,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137976784] [2021-10-08 16:13:42,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:13:42,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:42,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:42,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:42,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-08 16:13:42,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 16:13:42,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:42,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:13:42,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:42,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137976784] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:42,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:42,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-08 16:13:42,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411062469] [2021-10-08 16:13:42,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 16:13:42,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:42,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 16:13:42,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:13:42,775 INFO L87 Difference]: Start difference. First operand 201 states and 587 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:42,844 INFO L93 Difference]: Finished difference Result 402 states and 1013 transitions. [2021-10-08 16:13:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 16:13:42,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 16:13:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:42,848 INFO L225 Difference]: With dead ends: 402 [2021-10-08 16:13:42,848 INFO L226 Difference]: Without dead ends: 402 [2021-10-08 16:13:42,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-08 16:13:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-08 16:13:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 229. [2021-10-08 16:13:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 220 states have (on average 3.0727272727272728) internal successors, (676), 228 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 676 transitions. [2021-10-08 16:13:42,859 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 676 transitions. Word has length 9 [2021-10-08 16:13:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:42,859 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 676 transitions. [2021-10-08 16:13:42,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 676 transitions. [2021-10-08 16:13:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:13:42,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:42,860 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:42,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:43,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:43,076 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:43,077 INFO L82 PathProgramCache]: Analyzing trace with hash -296454774, now seen corresponding path program 2 times [2021-10-08 16:13:43,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:43,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706055514] [2021-10-08 16:13:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:43,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 16:13:43,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:43,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706055514] [2021-10-08 16:13:43,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706055514] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:43,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:43,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:13:43,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189517171] [2021-10-08 16:13:43,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:43,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:43,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:43,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:43,109 INFO L87 Difference]: Start difference. First operand 229 states and 676 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:43,117 INFO L93 Difference]: Finished difference Result 209 states and 597 transitions. [2021-10-08 16:13:43,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:43,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:13:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:43,120 INFO L225 Difference]: With dead ends: 209 [2021-10-08 16:13:43,120 INFO L226 Difference]: Without dead ends: 209 [2021-10-08 16:13:43,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-10-08 16:13:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-10-08 16:13:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 202 states have (on average 2.9554455445544554) internal successors, (597), 208 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 597 transitions. [2021-10-08 16:13:43,128 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 597 transitions. Word has length 10 [2021-10-08 16:13:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:43,128 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 597 transitions. [2021-10-08 16:13:43,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,129 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 597 transitions. [2021-10-08 16:13:43,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:13:43,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:43,130 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:43,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 16:13:43,130 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:43,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:43,130 INFO L82 PathProgramCache]: Analyzing trace with hash -296454773, now seen corresponding path program 1 times [2021-10-08 16:13:43,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:43,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777501620] [2021-10-08 16:13:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:43,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:43,182 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 16:13:43,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:43,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777501620] [2021-10-08 16:13:43,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777501620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:43,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733847472] [2021-10-08 16:13:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:43,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:43,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:43,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:43,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-08 16:13:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:43,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:13:43,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:43,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733847472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:43,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:43,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:13:43,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432691078] [2021-10-08 16:13:43,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:13:43,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:13:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:13:43,350 INFO L87 Difference]: Start difference. First operand 209 states and 597 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:43,515 INFO L93 Difference]: Finished difference Result 615 states and 1746 transitions. [2021-10-08 16:13:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:13:43,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:13:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:43,520 INFO L225 Difference]: With dead ends: 615 [2021-10-08 16:13:43,520 INFO L226 Difference]: Without dead ends: 615 [2021-10-08 16:13:43,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:13:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-10-08 16:13:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 109. [2021-10-08 16:13:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 2.826923076923077) internal successors, (294), 108 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 294 transitions. [2021-10-08 16:13:43,530 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 294 transitions. Word has length 10 [2021-10-08 16:13:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:43,531 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 294 transitions. [2021-10-08 16:13:43,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 294 transitions. [2021-10-08 16:13:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:13:43,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:43,532 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2021-10-08 16:13:43,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:43,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-08 16:13:43,745 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:43,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:43,746 INFO L82 PathProgramCache]: Analyzing trace with hash 2095738469, now seen corresponding path program 6 times [2021-10-08 16:13:43,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:43,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644440201] [2021-10-08 16:13:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:43,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:43,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:43,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644440201] [2021-10-08 16:13:43,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644440201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:43,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033033370] [2021-10-08 16:13:43,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:13:43,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:43,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:43,807 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:43,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-08 16:13:43,873 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 16:13:43,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:43,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 16:13:43,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:43,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033033370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:43,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:43,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-08 16:13:43,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550189132] [2021-10-08 16:13:43,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:13:43,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:13:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:13:43,910 INFO L87 Difference]: Start difference. First operand 109 states and 294 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:43,948 INFO L93 Difference]: Finished difference Result 289 states and 664 transitions. [2021-10-08 16:13:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 16:13:43,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 16:13:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:43,951 INFO L225 Difference]: With dead ends: 289 [2021-10-08 16:13:43,951 INFO L226 Difference]: Without dead ends: 289 [2021-10-08 16:13:43,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:13:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-10-08 16:13:43,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 117. [2021-10-08 16:13:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 2.8660714285714284) internal successors, (321), 116 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 321 transitions. [2021-10-08 16:13:43,957 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 321 transitions. Word has length 10 [2021-10-08 16:13:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:43,958 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 321 transitions. [2021-10-08 16:13:43,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 321 transitions. [2021-10-08 16:13:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:13:43,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:43,959 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1] [2021-10-08 16:13:43,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:44,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:44,173 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:44,174 INFO L82 PathProgramCache]: Analyzing trace with hash 543384747, now seen corresponding path program 7 times [2021-10-08 16:13:44,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:44,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699839424] [2021-10-08 16:13:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:44,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:44,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:44,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699839424] [2021-10-08 16:13:44,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699839424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:44,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249052626] [2021-10-08 16:13:44,238 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:13:44,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:44,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:44,239 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:44,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-08 16:13:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:44,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:13:44,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:44,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249052626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:44,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:44,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-08 16:13:44,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770594186] [2021-10-08 16:13:44,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 16:13:44,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 16:13:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:13:44,362 INFO L87 Difference]: Start difference. First operand 117 states and 321 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:44,409 INFO L93 Difference]: Finished difference Result 322 states and 742 transitions. [2021-10-08 16:13:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 16:13:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 16:13:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:44,412 INFO L225 Difference]: With dead ends: 322 [2021-10-08 16:13:44,412 INFO L226 Difference]: Without dead ends: 322 [2021-10-08 16:13:44,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 32.0ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:13:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-08 16:13:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 125. [2021-10-08 16:13:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 2.9) internal successors, (348), 124 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 348 transitions. [2021-10-08 16:13:44,418 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 348 transitions. Word has length 11 [2021-10-08 16:13:44,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:44,419 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 348 transitions. [2021-10-08 16:13:44,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 348 transitions. [2021-10-08 16:13:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:13:44,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:44,420 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2021-10-08 16:13:44,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:44,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-08 16:13:44,631 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash -334940379, now seen corresponding path program 8 times [2021-10-08 16:13:44,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:44,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476351550] [2021-10-08 16:13:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:44,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:44,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:44,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476351550] [2021-10-08 16:13:44,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476351550] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:44,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389226634] [2021-10-08 16:13:44,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:44,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:44,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:44,726 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:44,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-08 16:13:44,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:13:44,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:44,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 16:13:44,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:44,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389226634] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:44,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:44,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-08 16:13:44,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630712813] [2021-10-08 16:13:44,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:13:44,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:13:44,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:13:44,866 INFO L87 Difference]: Start difference. First operand 125 states and 348 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:44,926 INFO L93 Difference]: Finished difference Result 355 states and 820 transitions. [2021-10-08 16:13:44,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 16:13:44,928 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:13:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:44,932 INFO L225 Difference]: With dead ends: 355 [2021-10-08 16:13:44,933 INFO L226 Difference]: Without dead ends: 355 [2021-10-08 16:13:44,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 54.4ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:13:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-10-08 16:13:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 133. [2021-10-08 16:13:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 2.9296875) internal successors, (375), 132 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 375 transitions. [2021-10-08 16:13:44,940 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 375 transitions. Word has length 12 [2021-10-08 16:13:44,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:44,940 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 375 transitions. [2021-10-08 16:13:44,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:44,941 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 375 transitions. [2021-10-08 16:13:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:13:44,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:44,941 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:44,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:45,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-08 16:13:45,157 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:45,158 INFO L82 PathProgramCache]: Analyzing trace with hash -712089007, now seen corresponding path program 1 times [2021-10-08 16:13:45,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:45,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964220518] [2021-10-08 16:13:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:45,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:45,233 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 16:13:45,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:45,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964220518] [2021-10-08 16:13:45,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964220518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:45,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:45,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:13:45,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142464120] [2021-10-08 16:13:45,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:45,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:45,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:45,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:45,236 INFO L87 Difference]: Start difference. First operand 133 states and 375 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:45,244 INFO L93 Difference]: Finished difference Result 132 states and 374 transitions. [2021-10-08 16:13:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:45,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:13:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:45,247 INFO L225 Difference]: With dead ends: 132 [2021-10-08 16:13:45,247 INFO L226 Difference]: Without dead ends: 132 [2021-10-08 16:13:45,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-08 16:13:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-10-08 16:13:45,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 128 states have (on average 2.921875) internal successors, (374), 131 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 374 transitions. [2021-10-08 16:13:45,252 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 374 transitions. Word has length 13 [2021-10-08 16:13:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:45,253 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 374 transitions. [2021-10-08 16:13:45,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 374 transitions. [2021-10-08 16:13:45,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:13:45,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:45,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:13:45,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-08 16:13:45,254 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:45,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:45,255 INFO L82 PathProgramCache]: Analyzing trace with hash -712089058, now seen corresponding path program 1 times [2021-10-08 16:13:45,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:45,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102015219] [2021-10-08 16:13:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:45,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:45,310 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 16:13:45,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:45,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102015219] [2021-10-08 16:13:45,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102015219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 16:13:45,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:13:45,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 16:13:45,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143339095] [2021-10-08 16:13:45,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:13:45,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:13:45,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:45,312 INFO L87 Difference]: Start difference. First operand 132 states and 374 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:45,329 INFO L93 Difference]: Finished difference Result 131 states and 373 transitions. [2021-10-08 16:13:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:13:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:13:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:45,331 INFO L225 Difference]: With dead ends: 131 [2021-10-08 16:13:45,331 INFO L226 Difference]: Without dead ends: 116 [2021-10-08 16:13:45,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:13:45,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-08 16:13:45,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-08 16:13:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 2.398230088495575) internal successors, (271), 115 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 271 transitions. [2021-10-08 16:13:45,339 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 271 transitions. Word has length 13 [2021-10-08 16:13:45,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:45,339 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 271 transitions. [2021-10-08 16:13:45,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 271 transitions. [2021-10-08 16:13:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:13:45,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:45,340 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2021-10-08 16:13:45,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-08 16:13:45,340 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:45,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1793215509, now seen corresponding path program 9 times [2021-10-08 16:13:45,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:45,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952901721] [2021-10-08 16:13:45,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:45,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:45,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:45,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952901721] [2021-10-08 16:13:45,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952901721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:45,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891831380] [2021-10-08 16:13:45,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:13:45,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:45,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:45,450 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:45,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-08 16:13:45,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-08 16:13:45,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:45,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:13:45,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:45,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891831380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:45,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:45,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-08 16:13:45,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874908700] [2021-10-08 16:13:45,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 16:13:45,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:45,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 16:13:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:13:45,590 INFO L87 Difference]: Start difference. First operand 116 states and 271 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:45,642 INFO L93 Difference]: Finished difference Result 210 states and 493 transitions. [2021-10-08 16:13:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 16:13:45,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 16:13:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:45,646 INFO L225 Difference]: With dead ends: 210 [2021-10-08 16:13:45,646 INFO L226 Difference]: Without dead ends: 164 [2021-10-08 16:13:45,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:13:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-08 16:13:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 124. [2021-10-08 16:13:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 2.396694214876033) internal successors, (290), 123 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 290 transitions. [2021-10-08 16:13:45,652 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 290 transitions. Word has length 13 [2021-10-08 16:13:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:45,653 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 290 transitions. [2021-10-08 16:13:45,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:45,654 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 290 transitions. [2021-10-08 16:13:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:13:45,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:45,654 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2021-10-08 16:13:45,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:45,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:45,869 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:45,870 INFO L82 PathProgramCache]: Analyzing trace with hash 244895717, now seen corresponding path program 10 times [2021-10-08 16:13:45,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:45,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449371902] [2021-10-08 16:13:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:45,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:45,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449371902] [2021-10-08 16:13:45,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449371902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:45,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021474761] [2021-10-08 16:13:45,959 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:13:45,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:45,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:45,960 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:45,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-08 16:13:46,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:13:46,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:46,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-08 16:13:46,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:46,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021474761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:46,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:46,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-08 16:13:46,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149437183] [2021-10-08 16:13:46,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 16:13:46,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 16:13:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:13:46,113 INFO L87 Difference]: Start difference. First operand 124 states and 290 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:46,173 INFO L93 Difference]: Finished difference Result 226 states and 531 transitions. [2021-10-08 16:13:46,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 16:13:46,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 16:13:46,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:46,175 INFO L225 Difference]: With dead ends: 226 [2021-10-08 16:13:46,176 INFO L226 Difference]: Without dead ends: 176 [2021-10-08 16:13:46,176 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-08 16:13:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-08 16:13:46,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 132. [2021-10-08 16:13:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 129 states have (on average 2.395348837209302) internal successors, (309), 131 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 309 transitions. [2021-10-08 16:13:46,183 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 309 transitions. Word has length 14 [2021-10-08 16:13:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:46,183 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 309 transitions. [2021-10-08 16:13:46,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 309 transitions. [2021-10-08 16:13:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:13:46,184 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:46,184 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1] [2021-10-08 16:13:46,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:46,396 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash -998165717, now seen corresponding path program 11 times [2021-10-08 16:13:46,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:46,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941655607] [2021-10-08 16:13:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:46,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:46,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:46,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941655607] [2021-10-08 16:13:46,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941655607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:46,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288521627] [2021-10-08 16:13:46,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:13:46,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:46,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:46,498 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:46,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-08 16:13:46,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-08 16:13:46,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:46,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 16:13:46,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:46,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288521627] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:46,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:46,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-08 16:13:46,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022589714] [2021-10-08 16:13:46,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 16:13:46,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 16:13:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:13:46,650 INFO L87 Difference]: Start difference. First operand 132 states and 309 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:46,719 INFO L93 Difference]: Finished difference Result 242 states and 569 transitions. [2021-10-08 16:13:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 16:13:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 16:13:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:46,721 INFO L225 Difference]: With dead ends: 242 [2021-10-08 16:13:46,722 INFO L226 Difference]: Without dead ends: 188 [2021-10-08 16:13:46,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 61.9ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-08 16:13:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-08 16:13:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 140. [2021-10-08 16:13:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 137 states have (on average 2.394160583941606) internal successors, (328), 139 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 328 transitions. [2021-10-08 16:13:46,727 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 328 transitions. Word has length 15 [2021-10-08 16:13:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:46,748 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 328 transitions. [2021-10-08 16:13:46,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 328 transitions. [2021-10-08 16:13:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 16:13:46,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:46,750 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1] [2021-10-08 16:13:46,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:46,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-08 16:13:46,966 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:46,967 INFO L82 PathProgramCache]: Analyzing trace with hash -878364507, now seen corresponding path program 12 times [2021-10-08 16:13:46,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:46,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068504649] [2021-10-08 16:13:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:46,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:47,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:47,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068504649] [2021-10-08 16:13:47,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068504649] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:47,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575400554] [2021-10-08 16:13:47,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:13:47,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:47,095 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:47,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-08 16:13:47,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-08 16:13:47,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:47,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 16:13:47,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:47,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575400554] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:47,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:47,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-08 16:13:47,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655977248] [2021-10-08 16:13:47,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 16:13:47,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:47,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 16:13:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:13:47,260 INFO L87 Difference]: Start difference. First operand 140 states and 328 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:47,334 INFO L93 Difference]: Finished difference Result 258 states and 607 transitions. [2021-10-08 16:13:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 16:13:47,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 16:13:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:47,336 INFO L225 Difference]: With dead ends: 258 [2021-10-08 16:13:47,336 INFO L226 Difference]: Without dead ends: 200 [2021-10-08 16:13:47,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:13:47,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-08 16:13:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 148. [2021-10-08 16:13:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 145 states have (on average 2.393103448275862) internal successors, (347), 147 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 347 transitions. [2021-10-08 16:13:47,343 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 347 transitions. Word has length 16 [2021-10-08 16:13:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:47,344 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 347 transitions. [2021-10-08 16:13:47,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 347 transitions. [2021-10-08 16:13:47,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 16:13:47,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:47,345 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2021-10-08 16:13:47,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:47,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:47,559 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:47,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1459494293, now seen corresponding path program 13 times [2021-10-08 16:13:47,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:47,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76263510] [2021-10-08 16:13:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:47,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:47,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:47,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76263510] [2021-10-08 16:13:47,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76263510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:47,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269995184] [2021-10-08 16:13:47,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:13:47,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:47,693 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:47,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-08 16:13:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:47,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:13:47,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:47,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269995184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:47,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:47,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-08 16:13:47,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134785915] [2021-10-08 16:13:47,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 16:13:47,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 16:13:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:13:47,850 INFO L87 Difference]: Start difference. First operand 148 states and 347 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:47,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:47,928 INFO L93 Difference]: Finished difference Result 274 states and 645 transitions. [2021-10-08 16:13:47,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 16:13:47,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 16:13:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:47,930 INFO L225 Difference]: With dead ends: 274 [2021-10-08 16:13:47,931 INFO L226 Difference]: Without dead ends: 212 [2021-10-08 16:13:47,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:13:47,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-08 16:13:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 156. [2021-10-08 16:13:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 153 states have (on average 2.392156862745098) internal successors, (366), 155 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 366 transitions. [2021-10-08 16:13:47,937 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 366 transitions. Word has length 17 [2021-10-08 16:13:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:47,937 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 366 transitions. [2021-10-08 16:13:47,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:47,937 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 366 transitions. [2021-10-08 16:13:47,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 16:13:47,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:47,938 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2021-10-08 16:13:47,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:48,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:48,152 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:48,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2000318821, now seen corresponding path program 14 times [2021-10-08 16:13:48,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:48,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907180109] [2021-10-08 16:13:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:48,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:48,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:48,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907180109] [2021-10-08 16:13:48,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907180109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:48,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302549091] [2021-10-08 16:13:48,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:48,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:48,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:48,300 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:48,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-08 16:13:48,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:13:48,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:48,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 16:13:48,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:48,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302549091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:48,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:48,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-08 16:13:48,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3805517] [2021-10-08 16:13:48,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 16:13:48,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 16:13:48,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:13:48,476 INFO L87 Difference]: Start difference. First operand 156 states and 366 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:48,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:48,558 INFO L93 Difference]: Finished difference Result 290 states and 683 transitions. [2021-10-08 16:13:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 16:13:48,559 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 16:13:48,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:48,561 INFO L225 Difference]: With dead ends: 290 [2021-10-08 16:13:48,561 INFO L226 Difference]: Without dead ends: 224 [2021-10-08 16:13:48,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-08 16:13:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-08 16:13:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2021-10-08 16:13:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 161 states have (on average 2.391304347826087) internal successors, (385), 163 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 385 transitions. [2021-10-08 16:13:48,567 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 385 transitions. Word has length 18 [2021-10-08 16:13:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:48,568 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 385 transitions. [2021-10-08 16:13:48,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:48,568 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 385 transitions. [2021-10-08 16:13:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 16:13:48,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:48,569 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1] [2021-10-08 16:13:48,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:48,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-08 16:13:48,786 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:48,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:48,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1880342955, now seen corresponding path program 15 times [2021-10-08 16:13:48,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:48,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168073571] [2021-10-08 16:13:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:48,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:48,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:48,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168073571] [2021-10-08 16:13:48,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168073571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:48,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970343641] [2021-10-08 16:13:48,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:13:48,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:48,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:48,944 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:48,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-08 16:13:49,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-08 16:13:49,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:49,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 16:13:49,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:49,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970343641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:49,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:49,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-08 16:13:49,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150391441] [2021-10-08 16:13:49,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 16:13:49,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:49,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 16:13:49,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:13:49,132 INFO L87 Difference]: Start difference. First operand 164 states and 385 transitions. Second operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:49,218 INFO L93 Difference]: Finished difference Result 306 states and 721 transitions. [2021-10-08 16:13:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 16:13:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 16:13:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:49,221 INFO L225 Difference]: With dead ends: 306 [2021-10-08 16:13:49,221 INFO L226 Difference]: Without dead ends: 236 [2021-10-08 16:13:49,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-08 16:13:49,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-08 16:13:49,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 172. [2021-10-08 16:13:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 169 states have (on average 2.3905325443786984) internal successors, (404), 171 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 404 transitions. [2021-10-08 16:13:49,228 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 404 transitions. Word has length 19 [2021-10-08 16:13:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:49,250 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 404 transitions. [2021-10-08 16:13:49,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 404 transitions. [2021-10-08 16:13:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 16:13:49,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:49,251 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2021-10-08 16:13:49,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:49,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-08 16:13:49,464 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:49,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:49,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1838908891, now seen corresponding path program 16 times [2021-10-08 16:13:49,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:49,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019654598] [2021-10-08 16:13:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:49,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:49,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:49,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019654598] [2021-10-08 16:13:49,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019654598] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:49,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983951790] [2021-10-08 16:13:49,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:13:49,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:49,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:49,646 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:49,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-08 16:13:49,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:13:49,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:49,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 16:13:49,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:49,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983951790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:49,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:49,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-08 16:13:49,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266448595] [2021-10-08 16:13:49,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 16:13:49,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 16:13:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:13:49,846 INFO L87 Difference]: Start difference. First operand 172 states and 404 transitions. Second operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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 16:13:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:49,956 INFO L93 Difference]: Finished difference Result 322 states and 759 transitions. [2021-10-08 16:13:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 16:13:49,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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 20 [2021-10-08 16:13:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:49,959 INFO L225 Difference]: With dead ends: 322 [2021-10-08 16:13:49,959 INFO L226 Difference]: Without dead ends: 248 [2021-10-08 16:13:49,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-08 16:13:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-08 16:13:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 180. [2021-10-08 16:13:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 177 states have (on average 2.389830508474576) internal successors, (423), 179 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 423 transitions. [2021-10-08 16:13:49,965 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 423 transitions. Word has length 20 [2021-10-08 16:13:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:49,966 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 423 transitions. [2021-10-08 16:13:49,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 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 16:13:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 423 transitions. [2021-10-08 16:13:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 16:13:49,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:49,967 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1] [2021-10-08 16:13:49,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:50,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-08 16:13:50,182 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:50,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1171599125, now seen corresponding path program 17 times [2021-10-08 16:13:50,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:50,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434252552] [2021-10-08 16:13:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:50,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:50,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:50,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434252552] [2021-10-08 16:13:50,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434252552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:50,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159906934] [2021-10-08 16:13:50,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:13:50,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:50,367 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:50,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 16:13:50,502 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-08 16:13:50,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:50,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 16:13:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:50,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159906934] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:50,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:50,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-08 16:13:50,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785350192] [2021-10-08 16:13:50,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 16:13:50,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:50,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 16:13:50,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:13:50,575 INFO L87 Difference]: Start difference. First operand 180 states and 423 transitions. Second operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:50,679 INFO L93 Difference]: Finished difference Result 338 states and 797 transitions. [2021-10-08 16:13:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 16:13:50,679 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 16:13:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:50,681 INFO L225 Difference]: With dead ends: 338 [2021-10-08 16:13:50,681 INFO L226 Difference]: Without dead ends: 260 [2021-10-08 16:13:50,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-08 16:13:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-08 16:13:50,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 188. [2021-10-08 16:13:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 185 states have (on average 2.389189189189189) internal successors, (442), 187 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 442 transitions. [2021-10-08 16:13:50,692 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 442 transitions. Word has length 21 [2021-10-08 16:13:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:50,692 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 442 transitions. [2021-10-08 16:13:50,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 442 transitions. [2021-10-08 16:13:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 16:13:50,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:50,694 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1] [2021-10-08 16:13:50,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:50,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-08 16:13:50,908 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1959832859, now seen corresponding path program 18 times [2021-10-08 16:13:50,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:50,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636843231] [2021-10-08 16:13:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:50,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:51,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:51,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636843231] [2021-10-08 16:13:51,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636843231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:51,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637968916] [2021-10-08 16:13:51,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:13:51,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:51,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:51,112 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:51,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-08 16:13:51,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-08 16:13:51,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:51,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 16:13:51,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:51,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637968916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:51,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:51,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-08 16:13:51,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151298840] [2021-10-08 16:13:51,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 16:13:51,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 16:13:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:13:51,336 INFO L87 Difference]: Start difference. First operand 188 states and 442 transitions. Second operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:51,445 INFO L93 Difference]: Finished difference Result 354 states and 835 transitions. [2021-10-08 16:13:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 16:13:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-08 16:13:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:51,448 INFO L225 Difference]: With dead ends: 354 [2021-10-08 16:13:51,448 INFO L226 Difference]: Without dead ends: 272 [2021-10-08 16:13:51,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-08 16:13:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-08 16:13:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 196. [2021-10-08 16:13:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 2.38860103626943) internal successors, (461), 195 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 461 transitions. [2021-10-08 16:13:51,455 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 461 transitions. Word has length 22 [2021-10-08 16:13:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:51,456 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 461 transitions. [2021-10-08 16:13:51,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:51,456 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 461 transitions. [2021-10-08 16:13:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:13:51,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:51,457 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1] [2021-10-08 16:13:51,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-08 16:13:51,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:51,671 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:51,672 INFO L82 PathProgramCache]: Analyzing trace with hash -625274837, now seen corresponding path program 19 times [2021-10-08 16:13:51,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:51,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195788390] [2021-10-08 16:13:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:51,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:51,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:51,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195788390] [2021-10-08 16:13:51,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195788390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:51,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760648142] [2021-10-08 16:13:51,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:13:51,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:51,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:51,924 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:51,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-08 16:13:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:52,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 16:13:52,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:52,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760648142] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:52,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:52,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-08 16:13:52,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470489344] [2021-10-08 16:13:52,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 16:13:52,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 16:13:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:13:52,151 INFO L87 Difference]: Start difference. First operand 196 states and 461 transitions. Second operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:52,277 INFO L93 Difference]: Finished difference Result 370 states and 873 transitions. [2021-10-08 16:13:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 16:13:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 16:13:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:52,283 INFO L225 Difference]: With dead ends: 370 [2021-10-08 16:13:52,283 INFO L226 Difference]: Without dead ends: 284 [2021-10-08 16:13:52,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-08 16:13:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-08 16:13:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 204. [2021-10-08 16:13:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 201 states have (on average 2.388059701492537) internal successors, (480), 203 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 480 transitions. [2021-10-08 16:13:52,293 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 480 transitions. Word has length 23 [2021-10-08 16:13:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:52,293 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 480 transitions. [2021-10-08 16:13:52,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 480 transitions. [2021-10-08 16:13:52,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:13:52,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:52,294 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1] [2021-10-08 16:13:52,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:52,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-08 16:13:52,508 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash 2091318181, now seen corresponding path program 20 times [2021-10-08 16:13:52,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:52,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580493447] [2021-10-08 16:13:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:52,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:52,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:52,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580493447] [2021-10-08 16:13:52,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580493447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:52,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752214858] [2021-10-08 16:13:52,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:52,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:52,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:52,745 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:52,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-08 16:13:52,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:13:52,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:52,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 16:13:52,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:52,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752214858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:52,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:52,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-08 16:13:52,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892072955] [2021-10-08 16:13:52,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 16:13:52,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:52,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 16:13:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:13:52,969 INFO L87 Difference]: Start difference. First operand 204 states and 480 transitions. Second operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:53,114 INFO L93 Difference]: Finished difference Result 386 states and 911 transitions. [2021-10-08 16:13:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 16:13:53,116 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 16:13:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:53,118 INFO L225 Difference]: With dead ends: 386 [2021-10-08 16:13:53,119 INFO L226 Difference]: Without dead ends: 296 [2021-10-08 16:13:53,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 172.2ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-08 16:13:53,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-08 16:13:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 212. [2021-10-08 16:13:53,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 209 states have (on average 2.38755980861244) internal successors, (499), 211 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 499 transitions. [2021-10-08 16:13:53,127 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 499 transitions. Word has length 24 [2021-10-08 16:13:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:53,127 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 499 transitions. [2021-10-08 16:13:53,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 499 transitions. [2021-10-08 16:13:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:13:53,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:53,129 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1] [2021-10-08 16:13:53,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:53,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:53,340 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash 406355819, now seen corresponding path program 21 times [2021-10-08 16:13:53,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:53,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447054060] [2021-10-08 16:13:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:53,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:53,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:53,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447054060] [2021-10-08 16:13:53,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447054060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:53,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740413846] [2021-10-08 16:13:53,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:13:53,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:53,608 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:53,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-08 16:13:53,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-08 16:13:53,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:53,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 16:13:53,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:53,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740413846] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:53,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:53,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-08 16:13:53,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744950145] [2021-10-08 16:13:53,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-08 16:13:53,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:53,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-08 16:13:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:13:53,874 INFO L87 Difference]: Start difference. First operand 212 states and 499 transitions. Second operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:54,031 INFO L93 Difference]: Finished difference Result 402 states and 949 transitions. [2021-10-08 16:13:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 16:13:54,031 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-08 16:13:54,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:54,034 INFO L225 Difference]: With dead ends: 402 [2021-10-08 16:13:54,034 INFO L226 Difference]: Without dead ends: 308 [2021-10-08 16:13:54,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 201.4ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-08 16:13:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-08 16:13:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 220. [2021-10-08 16:13:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 2.3870967741935485) internal successors, (518), 219 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:54,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 518 transitions. [2021-10-08 16:13:54,042 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 518 transitions. Word has length 25 [2021-10-08 16:13:54,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:54,042 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 518 transitions. [2021-10-08 16:13:54,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:54,043 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 518 transitions. [2021-10-08 16:13:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-08 16:13:54,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:54,044 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2021-10-08 16:13:54,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-08 16:13:54,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:54,259 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash -287869851, now seen corresponding path program 22 times [2021-10-08 16:13:54,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:54,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556595524] [2021-10-08 16:13:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:54,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:54,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:54,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556595524] [2021-10-08 16:13:54,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556595524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:54,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26433450] [2021-10-08 16:13:54,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:13:54,526 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:54,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:54,527 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:54,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-08 16:13:54,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:13:54,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:54,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 16:13:54,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:54,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26433450] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:54,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:54,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-08 16:13:54,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166123060] [2021-10-08 16:13:54,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-08 16:13:54,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:54,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-08 16:13:54,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:13:54,795 INFO L87 Difference]: Start difference. First operand 220 states and 518 transitions. Second operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:54,956 INFO L93 Difference]: Finished difference Result 418 states and 987 transitions. [2021-10-08 16:13:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 16:13:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-08 16:13:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:54,959 INFO L225 Difference]: With dead ends: 418 [2021-10-08 16:13:54,959 INFO L226 Difference]: Without dead ends: 320 [2021-10-08 16:13:54,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 203.4ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-08 16:13:54,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-10-08 16:13:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 228. [2021-10-08 16:13:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 225 states have (on average 2.3866666666666667) internal successors, (537), 227 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 537 transitions. [2021-10-08 16:13:54,969 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 537 transitions. Word has length 26 [2021-10-08 16:13:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:54,969 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 537 transitions. [2021-10-08 16:13:54,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 537 transitions. [2021-10-08 16:13:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-08 16:13:54,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:54,971 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1] [2021-10-08 16:13:55,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:55,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-08 16:13:55,185 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:55,186 INFO L82 PathProgramCache]: Analyzing trace with hash -334029141, now seen corresponding path program 23 times [2021-10-08 16:13:55,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:55,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404297021] [2021-10-08 16:13:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:55,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:55,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:55,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404297021] [2021-10-08 16:13:55,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404297021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:55,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006358021] [2021-10-08 16:13:55,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:13:55,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:55,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:55,477 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:55,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-08 16:13:55,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-08 16:13:55,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:55,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 16:13:55,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:55,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006358021] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:55,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:55,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-08 16:13:55,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021088155] [2021-10-08 16:13:55,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 16:13:55,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 16:13:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:13:55,722 INFO L87 Difference]: Start difference. First operand 228 states and 537 transitions. Second operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:55,924 INFO L93 Difference]: Finished difference Result 434 states and 1025 transitions. [2021-10-08 16:13:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 16:13:55,924 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-08 16:13:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:55,929 INFO L225 Difference]: With dead ends: 434 [2021-10-08 16:13:55,929 INFO L226 Difference]: Without dead ends: 332 [2021-10-08 16:13:55,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-08 16:13:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-10-08 16:13:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 236. [2021-10-08 16:13:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 2.3862660944206007) internal successors, (556), 235 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 556 transitions. [2021-10-08 16:13:55,939 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 556 transitions. Word has length 27 [2021-10-08 16:13:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:55,939 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 556 transitions. [2021-10-08 16:13:55,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 556 transitions. [2021-10-08 16:13:55,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-08 16:13:55,941 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:55,941 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1] [2021-10-08 16:13:55,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:56,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-08 16:13:56,155 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1764967131, now seen corresponding path program 24 times [2021-10-08 16:13:56,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:56,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791588926] [2021-10-08 16:13:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:56,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:56,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:56,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791588926] [2021-10-08 16:13:56,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791588926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:56,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837079692] [2021-10-08 16:13:56,501 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:13:56,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:56,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:56,503 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:56,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-08 16:13:56,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-08 16:13:56,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:56,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 16:13:56,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:56,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837079692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:56,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:56,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-08 16:13:56,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002580952] [2021-10-08 16:13:56,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 16:13:56,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 16:13:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:13:56,775 INFO L87 Difference]: Start difference. First operand 236 states and 556 transitions. Second operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:56,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:56,949 INFO L93 Difference]: Finished difference Result 450 states and 1063 transitions. [2021-10-08 16:13:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 16:13:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-08 16:13:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:56,952 INFO L225 Difference]: With dead ends: 450 [2021-10-08 16:13:56,952 INFO L226 Difference]: Without dead ends: 344 [2021-10-08 16:13:56,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 273.7ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-08 16:13:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-08 16:13:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 244. [2021-10-08 16:13:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 241 states have (on average 2.3858921161825726) internal successors, (575), 243 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 575 transitions. [2021-10-08 16:13:56,960 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 575 transitions. Word has length 28 [2021-10-08 16:13:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:56,961 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 575 transitions. [2021-10-08 16:13:56,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 575 transitions. [2021-10-08 16:13:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-08 16:13:56,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:56,962 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1] [2021-10-08 16:13:56,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:57,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:57,177 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:57,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1120595435, now seen corresponding path program 25 times [2021-10-08 16:13:57,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:57,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87938856] [2021-10-08 16:13:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:57,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:57,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:57,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87938856] [2021-10-08 16:13:57,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87938856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:57,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253583] [2021-10-08 16:13:57,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:13:57,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:57,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:57,510 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:57,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-08 16:13:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:57,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 16:13:57,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:57,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:57,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:57,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-08 16:13:57,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191111665] [2021-10-08 16:13:57,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-08 16:13:57,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-08 16:13:57,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:13:57,784 INFO L87 Difference]: Start difference. First operand 244 states and 575 transitions. Second operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:57,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:57,978 INFO L93 Difference]: Finished difference Result 466 states and 1101 transitions. [2021-10-08 16:13:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 16:13:57,979 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-08 16:13:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:57,982 INFO L225 Difference]: With dead ends: 466 [2021-10-08 16:13:57,982 INFO L226 Difference]: Without dead ends: 356 [2021-10-08 16:13:57,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 261.1ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-08 16:13:57,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-08 16:13:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 252. [2021-10-08 16:13:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 2.3855421686746987) internal successors, (594), 251 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 594 transitions. [2021-10-08 16:13:57,991 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 594 transitions. Word has length 29 [2021-10-08 16:13:57,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:57,992 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 594 transitions. [2021-10-08 16:13:57,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 594 transitions. [2021-10-08 16:13:57,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-08 16:13:57,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:57,993 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1] [2021-10-08 16:13:58,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:58,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-08 16:13:58,207 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:58,208 INFO L82 PathProgramCache]: Analyzing trace with hash 378721765, now seen corresponding path program 26 times [2021-10-08 16:13:58,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:58,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378792467] [2021-10-08 16:13:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:58,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:58,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:58,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378792467] [2021-10-08 16:13:58,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378792467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:58,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044288162] [2021-10-08 16:13:58,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:13:58,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:58,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:58,554 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:58,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-08 16:13:58,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:13:58,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:58,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 16:13:58,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:58,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044288162] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:58,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:58,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-08 16:13:58,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175627874] [2021-10-08 16:13:58,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 16:13:58,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:58,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 16:13:58,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:13:58,854 INFO L87 Difference]: Start difference. First operand 252 states and 594 transitions. Second operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:13:59,018 INFO L93 Difference]: Finished difference Result 482 states and 1139 transitions. [2021-10-08 16:13:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 16:13:59,019 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-08 16:13:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:13:59,022 INFO L225 Difference]: With dead ends: 482 [2021-10-08 16:13:59,022 INFO L226 Difference]: Without dead ends: 368 [2021-10-08 16:13:59,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 273.0ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-08 16:13:59,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-08 16:13:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 260. [2021-10-08 16:13:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 257 states have (on average 2.385214007782101) internal successors, (613), 259 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 613 transitions. [2021-10-08 16:13:59,032 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 613 transitions. Word has length 30 [2021-10-08 16:13:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:13:59,032 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 613 transitions. [2021-10-08 16:13:59,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:13:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 613 transitions. [2021-10-08 16:13:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-08 16:13:59,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:13:59,033 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1] [2021-10-08 16:13:59,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-08 16:13:59,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-08 16:13:59,247 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:13:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:13:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1144525525, now seen corresponding path program 27 times [2021-10-08 16:13:59,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:13:59,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008756218] [2021-10-08 16:13:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:13:59,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:13:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:13:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:59,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:13:59,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008756218] [2021-10-08 16:13:59,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008756218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:59,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863413906] [2021-10-08 16:13:59,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:13:59,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:13:59,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:13:59,627 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:13:59,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-08 16:13:59,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-08 16:13:59,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:13:59,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 16:13:59,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:13:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:13:59,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863413906] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:13:59,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:13:59,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-10-08 16:13:59,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380814016] [2021-10-08 16:13:59,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 16:13:59,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:13:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 16:13:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:13:59,946 INFO L87 Difference]: Start difference. First operand 260 states and 613 transitions. Second operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:00,114 INFO L93 Difference]: Finished difference Result 498 states and 1177 transitions. [2021-10-08 16:14:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 16:14:00,114 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-08 16:14:00,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:00,127 INFO L225 Difference]: With dead ends: 498 [2021-10-08 16:14:00,127 INFO L226 Difference]: Without dead ends: 380 [2021-10-08 16:14:00,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 308.1ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-08 16:14:00,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-08 16:14:00,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 268. [2021-10-08 16:14:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 265 states have (on average 2.3849056603773584) internal successors, (632), 267 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 632 transitions. [2021-10-08 16:14:00,154 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 632 transitions. Word has length 31 [2021-10-08 16:14:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:00,155 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 632 transitions. [2021-10-08 16:14:00,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 632 transitions. [2021-10-08 16:14:00,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-08 16:14:00,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:00,158 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1] [2021-10-08 16:14:00,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:00,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-08 16:14:00,373 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:00,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1120551259, now seen corresponding path program 28 times [2021-10-08 16:14:00,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:00,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118658120] [2021-10-08 16:14:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:00,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:00,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:00,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118658120] [2021-10-08 16:14:00,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118658120] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:00,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738551712] [2021-10-08 16:14:00,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:00,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:00,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:00,850 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:00,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-08 16:14:01,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:01,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:01,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-08 16:14:01,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:01,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738551712] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:01,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:01,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-10-08 16:14:01,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791185551] [2021-10-08 16:14:01,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 16:14:01,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 16:14:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:14:01,187 INFO L87 Difference]: Start difference. First operand 268 states and 632 transitions. Second operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:01,404 INFO L93 Difference]: Finished difference Result 514 states and 1215 transitions. [2021-10-08 16:14:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 16:14:01,405 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-08 16:14:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:01,408 INFO L225 Difference]: With dead ends: 514 [2021-10-08 16:14:01,408 INFO L226 Difference]: Without dead ends: 392 [2021-10-08 16:14:01,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 371.2ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-08 16:14:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-10-08 16:14:01,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 276. [2021-10-08 16:14:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 273 states have (on average 2.3846153846153846) internal successors, (651), 275 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 651 transitions. [2021-10-08 16:14:01,417 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 651 transitions. Word has length 32 [2021-10-08 16:14:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:01,418 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 651 transitions. [2021-10-08 16:14:01,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 651 transitions. [2021-10-08 16:14:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-08 16:14:01,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:01,419 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1] [2021-10-08 16:14:01,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:01,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-08 16:14:01,634 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:01,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:01,635 INFO L82 PathProgramCache]: Analyzing trace with hash -377349013, now seen corresponding path program 29 times [2021-10-08 16:14:01,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:01,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839714946] [2021-10-08 16:14:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:01,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:02,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:02,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839714946] [2021-10-08 16:14:02,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839714946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:02,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911724346] [2021-10-08 16:14:02,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:02,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:02,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:02,108 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:02,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-08 16:14:02,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-08 16:14:02,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:02,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 16:14:02,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:02,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911724346] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:02,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:02,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-10-08 16:14:02,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595574105] [2021-10-08 16:14:02,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-08 16:14:02,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-08 16:14:02,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:14:02,423 INFO L87 Difference]: Start difference. First operand 276 states and 651 transitions. Second operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:02,657 INFO L93 Difference]: Finished difference Result 530 states and 1253 transitions. [2021-10-08 16:14:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 16:14:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-08 16:14:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:02,660 INFO L225 Difference]: With dead ends: 530 [2021-10-08 16:14:02,661 INFO L226 Difference]: Without dead ends: 404 [2021-10-08 16:14:02,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 377.2ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 16:14:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-08 16:14:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 284. [2021-10-08 16:14:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 281 states have (on average 2.3843416370106763) internal successors, (670), 283 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 670 transitions. [2021-10-08 16:14:02,670 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 670 transitions. Word has length 33 [2021-10-08 16:14:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:02,670 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 670 transitions. [2021-10-08 16:14:02,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 670 transitions. [2021-10-08 16:14:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-08 16:14:02,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:02,672 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1] [2021-10-08 16:14:02,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:02,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:02,887 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1187084133, now seen corresponding path program 30 times [2021-10-08 16:14:02,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:02,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355617514] [2021-10-08 16:14:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:02,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:03,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:03,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355617514] [2021-10-08 16:14:03,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355617514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:03,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100270095] [2021-10-08 16:14:03,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:03,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:03,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:03,343 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:03,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-08 16:14:03,590 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-08 16:14:03,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:03,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 16:14:03,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:03,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100270095] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:03,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:03,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-10-08 16:14:03,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968297497] [2021-10-08 16:14:03,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-08 16:14:03,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-08 16:14:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:14:03,714 INFO L87 Difference]: Start difference. First operand 284 states and 670 transitions. Second operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:03,919 INFO L93 Difference]: Finished difference Result 546 states and 1291 transitions. [2021-10-08 16:14:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 16:14:03,919 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-08 16:14:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:03,922 INFO L225 Difference]: With dead ends: 546 [2021-10-08 16:14:03,922 INFO L226 Difference]: Without dead ends: 416 [2021-10-08 16:14:03,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 374.1ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 16:14:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-08 16:14:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 292. [2021-10-08 16:14:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 2.384083044982699) internal successors, (689), 291 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 689 transitions. [2021-10-08 16:14:03,931 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 689 transitions. Word has length 34 [2021-10-08 16:14:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:03,932 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 689 transitions. [2021-10-08 16:14:03,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 689 transitions. [2021-10-08 16:14:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-08 16:14:03,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:03,933 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1] [2021-10-08 16:14:03,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:04,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-08 16:14:04,147 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:04,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:04,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1855095893, now seen corresponding path program 31 times [2021-10-08 16:14:04,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:04,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010164789] [2021-10-08 16:14:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:04,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:04,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:04,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010164789] [2021-10-08 16:14:04,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010164789] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:04,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586263915] [2021-10-08 16:14:04,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:04,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:04,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:04,610 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:04,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-08 16:14:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:04,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-08 16:14:04,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:04,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586263915] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:04,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:04,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-10-08 16:14:04,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322819729] [2021-10-08 16:14:04,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-08 16:14:04,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-08 16:14:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:14:04,952 INFO L87 Difference]: Start difference. First operand 292 states and 689 transitions. Second operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:05,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:05,186 INFO L93 Difference]: Finished difference Result 562 states and 1329 transitions. [2021-10-08 16:14:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 16:14:05,186 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-08 16:14:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:05,189 INFO L225 Difference]: With dead ends: 562 [2021-10-08 16:14:05,189 INFO L226 Difference]: Without dead ends: 428 [2021-10-08 16:14:05,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 383.1ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 16:14:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-08 16:14:05,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 300. [2021-10-08 16:14:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 297 states have (on average 2.3838383838383836) internal successors, (708), 299 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 708 transitions. [2021-10-08 16:14:05,198 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 708 transitions. Word has length 35 [2021-10-08 16:14:05,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:05,199 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 708 transitions. [2021-10-08 16:14:05,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:05,199 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 708 transitions. [2021-10-08 16:14:05,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-08 16:14:05,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:05,200 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1] [2021-10-08 16:14:05,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:05,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:05,415 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1673396187, now seen corresponding path program 32 times [2021-10-08 16:14:05,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:05,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447249697] [2021-10-08 16:14:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:05,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:05,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:05,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447249697] [2021-10-08 16:14:05,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447249697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:05,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442433907] [2021-10-08 16:14:05,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:05,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:05,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:05,907 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:05,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-08 16:14:06,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:06,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:06,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-08 16:14:06,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:06,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442433907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:06,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:06,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-10-08 16:14:06,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346894846] [2021-10-08 16:14:06,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-08 16:14:06,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:06,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-08 16:14:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:14:06,244 INFO L87 Difference]: Start difference. First operand 300 states and 708 transitions. Second operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:06,470 INFO L93 Difference]: Finished difference Result 578 states and 1367 transitions. [2021-10-08 16:14:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 16:14:06,471 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-08 16:14:06,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:06,474 INFO L225 Difference]: With dead ends: 578 [2021-10-08 16:14:06,474 INFO L226 Difference]: Without dead ends: 440 [2021-10-08 16:14:06,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 409.8ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 16:14:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-08 16:14:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 308. [2021-10-08 16:14:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 305 states have (on average 2.3836065573770493) internal successors, (727), 307 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 727 transitions. [2021-10-08 16:14:06,485 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 727 transitions. Word has length 36 [2021-10-08 16:14:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:06,485 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 727 transitions. [2021-10-08 16:14:06,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 727 transitions. [2021-10-08 16:14:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-08 16:14:06,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:06,486 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1] [2021-10-08 16:14:06,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:06,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-08 16:14:06,702 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:06,703 INFO L82 PathProgramCache]: Analyzing trace with hash -335672597, now seen corresponding path program 33 times [2021-10-08 16:14:06,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:06,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968083408] [2021-10-08 16:14:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:06,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:07,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:07,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968083408] [2021-10-08 16:14:07,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968083408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:07,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481667111] [2021-10-08 16:14:07,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:07,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:07,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:07,257 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:07,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-08 16:14:07,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-08 16:14:07,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:07,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-08 16:14:07,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:07,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481667111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:07,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:07,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-10-08 16:14:07,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147067180] [2021-10-08 16:14:07,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-08 16:14:07,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-08 16:14:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:14:07,622 INFO L87 Difference]: Start difference. First operand 308 states and 727 transitions. Second operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:07,891 INFO L93 Difference]: Finished difference Result 594 states and 1405 transitions. [2021-10-08 16:14:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 16:14:07,892 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-08 16:14:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:07,895 INFO L225 Difference]: With dead ends: 594 [2021-10-08 16:14:07,895 INFO L226 Difference]: Without dead ends: 452 [2021-10-08 16:14:07,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 452.3ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 16:14:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-08 16:14:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 316. [2021-10-08 16:14:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 2.3833865814696487) internal successors, (746), 315 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 746 transitions. [2021-10-08 16:14:07,907 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 746 transitions. Word has length 37 [2021-10-08 16:14:07,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:07,907 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 746 transitions. [2021-10-08 16:14:07,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 746 transitions. [2021-10-08 16:14:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 16:14:07,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:07,909 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1] [2021-10-08 16:14:07,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:08,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:08,125 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:08,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1815914267, now seen corresponding path program 34 times [2021-10-08 16:14:08,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:08,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115086958] [2021-10-08 16:14:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:08,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:08,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:08,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115086958] [2021-10-08 16:14:08,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115086958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:08,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241039040] [2021-10-08 16:14:08,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:08,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:08,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:08,727 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:08,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-08 16:14:09,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:09,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:09,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:14:09,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:09,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241039040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:09,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:09,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-10-08 16:14:09,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088448331] [2021-10-08 16:14:09,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-08 16:14:09,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-08 16:14:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:14:09,104 INFO L87 Difference]: Start difference. First operand 316 states and 746 transitions. Second operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:09,345 INFO L93 Difference]: Finished difference Result 610 states and 1443 transitions. [2021-10-08 16:14:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 16:14:09,345 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-08 16:14:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:09,348 INFO L225 Difference]: With dead ends: 610 [2021-10-08 16:14:09,349 INFO L226 Difference]: Without dead ends: 464 [2021-10-08 16:14:09,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 508.9ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 16:14:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-08 16:14:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 324. [2021-10-08 16:14:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 321 states have (on average 2.383177570093458) internal successors, (765), 323 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 765 transitions. [2021-10-08 16:14:09,360 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 765 transitions. Word has length 38 [2021-10-08 16:14:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:09,360 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 765 transitions. [2021-10-08 16:14:09,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 765 transitions. [2021-10-08 16:14:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-08 16:14:09,361 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:09,362 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1] [2021-10-08 16:14:09,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-08 16:14:09,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:09,576 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:09,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:09,577 INFO L82 PathProgramCache]: Analyzing trace with hash -458765781, now seen corresponding path program 35 times [2021-10-08 16:14:09,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:09,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170551289] [2021-10-08 16:14:09,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:09,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:10,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:10,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170551289] [2021-10-08 16:14:10,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170551289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:10,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618643434] [2021-10-08 16:14:10,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:10,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:10,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:10,196 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:10,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-08 16:14:10,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-08 16:14:10,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:10,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-08 16:14:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:10,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618643434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:10,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:10,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-10-08 16:14:10,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943558767] [2021-10-08 16:14:10,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-08 16:14:10,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-08 16:14:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:14:10,581 INFO L87 Difference]: Start difference. First operand 324 states and 765 transitions. Second operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:10,838 INFO L93 Difference]: Finished difference Result 626 states and 1481 transitions. [2021-10-08 16:14:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 16:14:10,839 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-08 16:14:10,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:10,842 INFO L225 Difference]: With dead ends: 626 [2021-10-08 16:14:10,842 INFO L226 Difference]: Without dead ends: 476 [2021-10-08 16:14:10,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 526.3ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 16:14:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-08 16:14:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 332. [2021-10-08 16:14:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 329 states have (on average 2.382978723404255) internal successors, (784), 331 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 784 transitions. [2021-10-08 16:14:10,852 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 784 transitions. Word has length 39 [2021-10-08 16:14:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:10,852 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 784 transitions. [2021-10-08 16:14:10,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 784 transitions. [2021-10-08 16:14:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-08 16:14:10,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:10,854 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1] [2021-10-08 16:14:10,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-08 16:14:11,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-08 16:14:11,069 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:11,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:11,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1336835675, now seen corresponding path program 36 times [2021-10-08 16:14:11,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:11,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664534791] [2021-10-08 16:14:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:11,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:11,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:11,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664534791] [2021-10-08 16:14:11,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664534791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:11,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632284421] [2021-10-08 16:14:11,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:11,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:11,718 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:11,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-08 16:14:12,041 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-08 16:14:12,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:12,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-08 16:14:12,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:12,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632284421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:12,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:12,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2021-10-08 16:14:12,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905774936] [2021-10-08 16:14:12,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-08 16:14:12,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-08 16:14:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:14:12,139 INFO L87 Difference]: Start difference. First operand 332 states and 784 transitions. Second operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:12,394 INFO L93 Difference]: Finished difference Result 642 states and 1519 transitions. [2021-10-08 16:14:12,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 16:14:12,395 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-08 16:14:12,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:12,398 INFO L225 Difference]: With dead ends: 642 [2021-10-08 16:14:12,398 INFO L226 Difference]: Without dead ends: 488 [2021-10-08 16:14:12,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 546.5ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 16:14:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-08 16:14:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 340. [2021-10-08 16:14:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 337 states have (on average 2.3827893175074184) internal successors, (803), 339 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 803 transitions. [2021-10-08 16:14:12,409 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 803 transitions. Word has length 40 [2021-10-08 16:14:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:12,409 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 803 transitions. [2021-10-08 16:14:12,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 803 transitions. [2021-10-08 16:14:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-08 16:14:12,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:12,411 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1] [2021-10-08 16:14:12,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-08 16:14:12,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-08 16:14:12,626 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:12,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1507768683, now seen corresponding path program 37 times [2021-10-08 16:14:12,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:12,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137849744] [2021-10-08 16:14:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:12,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:13,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:13,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137849744] [2021-10-08 16:14:13,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137849744] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:13,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501788530] [2021-10-08 16:14:13,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:13,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:13,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:13,301 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:13,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-08 16:14:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:13,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:14:13,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:13,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501788530] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:13,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:13,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2021-10-08 16:14:13,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352716760] [2021-10-08 16:14:13,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-08 16:14:13,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:13,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-08 16:14:13,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:14:13,717 INFO L87 Difference]: Start difference. First operand 340 states and 803 transitions. Second operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:13,996 INFO L93 Difference]: Finished difference Result 658 states and 1557 transitions. [2021-10-08 16:14:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 16:14:13,997 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-10-08 16:14:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:14,001 INFO L225 Difference]: With dead ends: 658 [2021-10-08 16:14:14,001 INFO L226 Difference]: Without dead ends: 500 [2021-10-08 16:14:14,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 581.7ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 16:14:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-08 16:14:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 348. [2021-10-08 16:14:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 345 states have (on average 2.382608695652174) internal successors, (822), 347 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 822 transitions. [2021-10-08 16:14:14,012 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 822 transitions. Word has length 41 [2021-10-08 16:14:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:14,012 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 822 transitions. [2021-10-08 16:14:14,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:14,013 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 822 transitions. [2021-10-08 16:14:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-08 16:14:14,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:14,014 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1] [2021-10-08 16:14:14,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-08 16:14:14,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-08 16:14:14,230 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:14,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:14,230 INFO L82 PathProgramCache]: Analyzing trace with hash -503809435, now seen corresponding path program 38 times [2021-10-08 16:14:14,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:14,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182689243] [2021-10-08 16:14:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:14,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:14,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:14,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182689243] [2021-10-08 16:14:14,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182689243] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:14,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957552709] [2021-10-08 16:14:14,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:14,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:14,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:14,933 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:14,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-08 16:14:15,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:15,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:15,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-08 16:14:15,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:15,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957552709] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:15,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:15,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2021-10-08 16:14:15,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795130144] [2021-10-08 16:14:15,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-08 16:14:15,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-08 16:14:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:14:15,359 INFO L87 Difference]: Start difference. First operand 348 states and 822 transitions. Second operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:15,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:15,660 INFO L93 Difference]: Finished difference Result 674 states and 1595 transitions. [2021-10-08 16:14:15,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 16:14:15,661 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 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 42 [2021-10-08 16:14:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:15,665 INFO L225 Difference]: With dead ends: 674 [2021-10-08 16:14:15,665 INFO L226 Difference]: Without dead ends: 512 [2021-10-08 16:14:15,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 611.1ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 16:14:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-08 16:14:15,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 356. [2021-10-08 16:14:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 353 states have (on average 2.3824362606232294) internal successors, (841), 355 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 841 transitions. [2021-10-08 16:14:15,678 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 841 transitions. Word has length 42 [2021-10-08 16:14:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:15,679 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 841 transitions. [2021-10-08 16:14:15,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 841 transitions. [2021-10-08 16:14:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-08 16:14:15,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:15,681 INFO L512 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1] [2021-10-08 16:14:15,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:15,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:15,896 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:15,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1561778347, now seen corresponding path program 39 times [2021-10-08 16:14:15,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:15,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929167002] [2021-10-08 16:14:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:15,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:16,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:16,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929167002] [2021-10-08 16:14:16,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929167002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:16,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001537248] [2021-10-08 16:14:16,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:16,562 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:16,563 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:16,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-08 16:14:16,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-08 16:14:16,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:16,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-08 16:14:16,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:17,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001537248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:17,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:17,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2021-10-08 16:14:17,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063645964] [2021-10-08 16:14:17,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-08 16:14:17,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-08 16:14:17,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:14:17,028 INFO L87 Difference]: Start difference. First operand 356 states and 841 transitions. Second operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:17,364 INFO L93 Difference]: Finished difference Result 690 states and 1633 transitions. [2021-10-08 16:14:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 16:14:17,365 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-08 16:14:17,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:17,368 INFO L225 Difference]: With dead ends: 690 [2021-10-08 16:14:17,368 INFO L226 Difference]: Without dead ends: 524 [2021-10-08 16:14:17,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 572.2ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 16:14:17,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-08 16:14:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 364. [2021-10-08 16:14:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 361 states have (on average 2.3822714681440442) internal successors, (860), 363 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 860 transitions. [2021-10-08 16:14:17,376 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 860 transitions. Word has length 43 [2021-10-08 16:14:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:17,376 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 860 transitions. [2021-10-08 16:14:17,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 860 transitions. [2021-10-08 16:14:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-08 16:14:17,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:17,378 INFO L512 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1] [2021-10-08 16:14:17,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-08 16:14:17,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:17,593 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:17,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1170490149, now seen corresponding path program 40 times [2021-10-08 16:14:17,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:17,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390065625] [2021-10-08 16:14:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:17,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:18,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:18,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390065625] [2021-10-08 16:14:18,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390065625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:18,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808797004] [2021-10-08 16:14:18,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:18,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:18,368 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:18,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-08 16:14:18,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:18,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:18,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-08 16:14:18,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:18,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808797004] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:18,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:18,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2021-10-08 16:14:18,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851371418] [2021-10-08 16:14:18,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-08 16:14:18,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-08 16:14:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:14:18,841 INFO L87 Difference]: Start difference. First operand 364 states and 860 transitions. Second operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:19,179 INFO L93 Difference]: Finished difference Result 706 states and 1671 transitions. [2021-10-08 16:14:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 16:14:19,179 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-08 16:14:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:19,182 INFO L225 Difference]: With dead ends: 706 [2021-10-08 16:14:19,182 INFO L226 Difference]: Without dead ends: 536 [2021-10-08 16:14:19,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 666.7ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 16:14:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-08 16:14:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 372. [2021-10-08 16:14:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 369 states have (on average 2.3821138211382116) internal successors, (879), 371 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 879 transitions. [2021-10-08 16:14:19,192 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 879 transitions. Word has length 44 [2021-10-08 16:14:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:19,193 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 879 transitions. [2021-10-08 16:14:19,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 879 transitions. [2021-10-08 16:14:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-08 16:14:19,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:19,194 INFO L512 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1] [2021-10-08 16:14:19,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-08 16:14:19,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:19,409 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1925457899, now seen corresponding path program 41 times [2021-10-08 16:14:19,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:19,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83530959] [2021-10-08 16:14:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:19,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:20,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:20,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83530959] [2021-10-08 16:14:20,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83530959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:20,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350538165] [2021-10-08 16:14:20,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:20,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:20,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:20,211 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:20,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-08 16:14:20,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-10-08 16:14:20,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:20,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-08 16:14:20,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:20,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350538165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:20,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:20,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2021-10-08 16:14:20,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792156231] [2021-10-08 16:14:20,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-08 16:14:20,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-08 16:14:20,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:14:20,704 INFO L87 Difference]: Start difference. First operand 372 states and 879 transitions. Second operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:21,051 INFO L93 Difference]: Finished difference Result 722 states and 1709 transitions. [2021-10-08 16:14:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 16:14:21,051 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-08 16:14:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:21,054 INFO L225 Difference]: With dead ends: 722 [2021-10-08 16:14:21,054 INFO L226 Difference]: Without dead ends: 548 [2021-10-08 16:14:21,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 705.5ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 16:14:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-10-08 16:14:21,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 380. [2021-10-08 16:14:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 377 states have (on average 2.381962864721485) internal successors, (898), 379 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 898 transitions. [2021-10-08 16:14:21,063 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 898 transitions. Word has length 45 [2021-10-08 16:14:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:21,064 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 898 transitions. [2021-10-08 16:14:21,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 898 transitions. [2021-10-08 16:14:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-08 16:14:21,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:21,065 INFO L512 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1] [2021-10-08 16:14:21,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-10-08 16:14:21,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:21,278 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:21,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:21,278 INFO L82 PathProgramCache]: Analyzing trace with hash -440345627, now seen corresponding path program 42 times [2021-10-08 16:14:21,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:21,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457168671] [2021-10-08 16:14:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:21,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:22,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:22,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457168671] [2021-10-08 16:14:22,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457168671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:22,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581189518] [2021-10-08 16:14:22,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:22,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:22,132 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:22,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-08 16:14:22,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-10-08 16:14:22,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:22,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-08 16:14:22,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:22,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581189518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:22,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:22,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2021-10-08 16:14:22,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455269662] [2021-10-08 16:14:22,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-08 16:14:22,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:22,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-08 16:14:22,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:14:22,644 INFO L87 Difference]: Start difference. First operand 380 states and 898 transitions. Second operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:23,043 INFO L93 Difference]: Finished difference Result 738 states and 1747 transitions. [2021-10-08 16:14:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 16:14:23,044 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-08 16:14:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:23,047 INFO L225 Difference]: With dead ends: 738 [2021-10-08 16:14:23,047 INFO L226 Difference]: Without dead ends: 560 [2021-10-08 16:14:23,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 740.6ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 16:14:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-08 16:14:23,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 388. [2021-10-08 16:14:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 385 states have (on average 2.381818181818182) internal successors, (917), 387 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 917 transitions. [2021-10-08 16:14:23,060 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 917 transitions. Word has length 46 [2021-10-08 16:14:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:23,061 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 917 transitions. [2021-10-08 16:14:23,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 917 transitions. [2021-10-08 16:14:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-08 16:14:23,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:23,062 INFO L512 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1] [2021-10-08 16:14:23,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:23,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-08 16:14:23,264 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash -765810901, now seen corresponding path program 43 times [2021-10-08 16:14:23,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:23,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092797526] [2021-10-08 16:14:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:23,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:24,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:24,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092797526] [2021-10-08 16:14:24,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092797526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:24,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309861869] [2021-10-08 16:14:24,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:24,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:24,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:24,095 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:24,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-08 16:14:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:24,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-08 16:14:24,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:24,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309861869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:24,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:24,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2021-10-08 16:14:24,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124838642] [2021-10-08 16:14:24,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-08 16:14:24,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-08 16:14:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:14:24,576 INFO L87 Difference]: Start difference. First operand 388 states and 917 transitions. Second operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:24,937 INFO L93 Difference]: Finished difference Result 754 states and 1785 transitions. [2021-10-08 16:14:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 16:14:24,938 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-08 16:14:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:24,942 INFO L225 Difference]: With dead ends: 754 [2021-10-08 16:14:24,942 INFO L226 Difference]: Without dead ends: 572 [2021-10-08 16:14:24,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 719.5ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 16:14:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-08 16:14:24,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 396. [2021-10-08 16:14:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 393 states have (on average 2.381679389312977) internal successors, (936), 395 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 936 transitions. [2021-10-08 16:14:24,953 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 936 transitions. Word has length 47 [2021-10-08 16:14:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:24,953 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 936 transitions. [2021-10-08 16:14:24,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 936 transitions. [2021-10-08 16:14:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-08 16:14:24,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:24,955 INFO L512 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1] [2021-10-08 16:14:24,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-08 16:14:25,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-08 16:14:25,170 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:25,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2029667493, now seen corresponding path program 44 times [2021-10-08 16:14:25,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:25,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478655614] [2021-10-08 16:14:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:25,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:26,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:26,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478655614] [2021-10-08 16:14:26,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478655614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:26,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36341299] [2021-10-08 16:14:26,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:26,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:26,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:26,016 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:26,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-08 16:14:26,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:26,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:26,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-08 16:14:26,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:26,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36341299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:26,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:26,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2021-10-08 16:14:26,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164184680] [2021-10-08 16:14:26,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-08 16:14:26,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:26,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-08 16:14:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:14:26,563 INFO L87 Difference]: Start difference. First operand 396 states and 936 transitions. Second operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:26,970 INFO L93 Difference]: Finished difference Result 770 states and 1823 transitions. [2021-10-08 16:14:26,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 16:14:26,971 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-08 16:14:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:26,973 INFO L225 Difference]: With dead ends: 770 [2021-10-08 16:14:26,973 INFO L226 Difference]: Without dead ends: 584 [2021-10-08 16:14:26,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 741.8ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 16:14:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-08 16:14:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 404. [2021-10-08 16:14:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 401 states have (on average 2.3815461346633415) internal successors, (955), 403 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 955 transitions. [2021-10-08 16:14:26,984 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 955 transitions. Word has length 48 [2021-10-08 16:14:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:26,985 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 955 transitions. [2021-10-08 16:14:26,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 955 transitions. [2021-10-08 16:14:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-08 16:14:26,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:26,986 INFO L512 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1] [2021-10-08 16:14:27,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-08 16:14:27,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-08 16:14:27,202 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:27,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1504815509, now seen corresponding path program 45 times [2021-10-08 16:14:27,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:27,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752512546] [2021-10-08 16:14:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:27,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:28,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:28,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752512546] [2021-10-08 16:14:28,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752512546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:28,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765357188] [2021-10-08 16:14:28,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:28,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:28,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:28,181 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:28,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-08 16:14:28,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-10-08 16:14:28,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:28,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-08 16:14:28,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:28,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765357188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:28,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:28,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2021-10-08 16:14:28,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590386985] [2021-10-08 16:14:28,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-08 16:14:28,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-08 16:14:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:14:28,762 INFO L87 Difference]: Start difference. First operand 404 states and 955 transitions. Second operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:29,204 INFO L93 Difference]: Finished difference Result 786 states and 1861 transitions. [2021-10-08 16:14:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 16:14:29,204 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-08 16:14:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:29,206 INFO L225 Difference]: With dead ends: 786 [2021-10-08 16:14:29,206 INFO L226 Difference]: Without dead ends: 596 [2021-10-08 16:14:29,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 842.0ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-08 16:14:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-10-08 16:14:29,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 412. [2021-10-08 16:14:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 409 states have (on average 2.3814180929095357) internal successors, (974), 411 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 974 transitions. [2021-10-08 16:14:29,218 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 974 transitions. Word has length 49 [2021-10-08 16:14:29,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:29,218 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 974 transitions. [2021-10-08 16:14:29,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:29,219 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 974 transitions. [2021-10-08 16:14:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-08 16:14:29,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:29,220 INFO L512 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2021-10-08 16:14:29,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:29,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:29,435 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:29,436 INFO L82 PathProgramCache]: Analyzing trace with hash 595361125, now seen corresponding path program 46 times [2021-10-08 16:14:29,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:29,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571611038] [2021-10-08 16:14:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:29,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:30,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:30,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571611038] [2021-10-08 16:14:30,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571611038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:30,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022110191] [2021-10-08 16:14:30,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:30,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:30,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:30,379 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:30,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-08 16:14:30,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:30,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:30,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-08 16:14:30,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:30,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022110191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:30,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:30,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2021-10-08 16:14:30,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495660653] [2021-10-08 16:14:30,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-08 16:14:30,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-08 16:14:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:14:30,941 INFO L87 Difference]: Start difference. First operand 412 states and 974 transitions. Second operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:31,382 INFO L93 Difference]: Finished difference Result 802 states and 1899 transitions. [2021-10-08 16:14:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 16:14:31,383 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-10-08 16:14:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:31,385 INFO L225 Difference]: With dead ends: 802 [2021-10-08 16:14:31,385 INFO L226 Difference]: Without dead ends: 608 [2021-10-08 16:14:31,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 833.9ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 16:14:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-08 16:14:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 420. [2021-10-08 16:14:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 417 states have (on average 2.381294964028777) internal successors, (993), 419 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 993 transitions. [2021-10-08 16:14:31,395 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 993 transitions. Word has length 50 [2021-10-08 16:14:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:31,395 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 993 transitions. [2021-10-08 16:14:31,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 993 transitions. [2021-10-08 16:14:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-08 16:14:31,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:31,397 INFO L512 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1] [2021-10-08 16:14:31,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-08 16:14:31,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-08 16:14:31,613 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:31,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1276327339, now seen corresponding path program 47 times [2021-10-08 16:14:31,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:31,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853111964] [2021-10-08 16:14:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:31,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:32,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:32,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853111964] [2021-10-08 16:14:32,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853111964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:32,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774156892] [2021-10-08 16:14:32,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:32,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:32,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:32,627 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:32,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-08 16:14:33,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-08 16:14:33,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:33,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-08 16:14:33,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:33,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774156892] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:33,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:33,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2021-10-08 16:14:33,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787782823] [2021-10-08 16:14:33,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-08 16:14:33,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-08 16:14:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:14:33,214 INFO L87 Difference]: Start difference. First operand 420 states and 993 transitions. Second operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:33,805 INFO L93 Difference]: Finished difference Result 818 states and 1937 transitions. [2021-10-08 16:14:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 16:14:33,806 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-08 16:14:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:33,808 INFO L225 Difference]: With dead ends: 818 [2021-10-08 16:14:33,808 INFO L226 Difference]: Without dead ends: 620 [2021-10-08 16:14:33,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 902.5ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 16:14:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-10-08 16:14:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 428. [2021-10-08 16:14:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 425 states have (on average 2.3811764705882354) internal successors, (1012), 427 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1012 transitions. [2021-10-08 16:14:33,844 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1012 transitions. Word has length 51 [2021-10-08 16:14:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:33,845 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1012 transitions. [2021-10-08 16:14:33,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1012 transitions. [2021-10-08 16:14:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-08 16:14:33,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:33,847 INFO L512 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1] [2021-10-08 16:14:33,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-08 16:14:34,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:34,061 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash 911443493, now seen corresponding path program 48 times [2021-10-08 16:14:34,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:34,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979236329] [2021-10-08 16:14:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:34,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:35,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:35,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979236329] [2021-10-08 16:14:35,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979236329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:35,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665384615] [2021-10-08 16:14:35,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:35,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:35,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:35,122 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:35,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-08 16:14:35,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-10-08 16:14:35,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:35,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-08 16:14:35,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:35,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665384615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:35,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:35,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2021-10-08 16:14:35,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726412589] [2021-10-08 16:14:35,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-08 16:14:35,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-08 16:14:35,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:14:35,739 INFO L87 Difference]: Start difference. First operand 428 states and 1012 transitions. Second operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:36,212 INFO L93 Difference]: Finished difference Result 834 states and 1975 transitions. [2021-10-08 16:14:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 16:14:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-08 16:14:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:36,214 INFO L225 Difference]: With dead ends: 834 [2021-10-08 16:14:36,214 INFO L226 Difference]: Without dead ends: 632 [2021-10-08 16:14:36,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 945.5ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 16:14:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-08 16:14:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 436. [2021-10-08 16:14:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 433 states have (on average 2.3810623556581985) internal successors, (1031), 435 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1031 transitions. [2021-10-08 16:14:36,223 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1031 transitions. Word has length 52 [2021-10-08 16:14:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:36,224 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1031 transitions. [2021-10-08 16:14:36,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1031 transitions. [2021-10-08 16:14:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-08 16:14:36,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:36,226 INFO L512 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1] [2021-10-08 16:14:36,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:36,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-08 16:14:36,441 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:36,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1810021141, now seen corresponding path program 49 times [2021-10-08 16:14:36,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:36,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84822293] [2021-10-08 16:14:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:36,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:37,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:37,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84822293] [2021-10-08 16:14:37,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84822293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:37,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869167914] [2021-10-08 16:14:37,475 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:37,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:37,476 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:37,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-08 16:14:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:37,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-08 16:14:37,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:38,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869167914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:38,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:38,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2021-10-08 16:14:38,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879347470] [2021-10-08 16:14:38,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-08 16:14:38,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-08 16:14:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:14:38,086 INFO L87 Difference]: Start difference. First operand 436 states and 1031 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:38,587 INFO L93 Difference]: Finished difference Result 850 states and 2013 transitions. [2021-10-08 16:14:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 16:14:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-08 16:14:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:38,589 INFO L225 Difference]: With dead ends: 850 [2021-10-08 16:14:38,589 INFO L226 Difference]: Without dead ends: 644 [2021-10-08 16:14:38,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 913.5ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 16:14:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-10-08 16:14:38,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 444. [2021-10-08 16:14:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 441 states have (on average 2.380952380952381) internal successors, (1050), 443 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1050 transitions. [2021-10-08 16:14:38,601 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1050 transitions. Word has length 53 [2021-10-08 16:14:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:38,601 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1050 transitions. [2021-10-08 16:14:38,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1050 transitions. [2021-10-08 16:14:38,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-08 16:14:38,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:38,603 INFO L512 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1] [2021-10-08 16:14:38,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:38,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:38,817 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:38,818 INFO L82 PathProgramCache]: Analyzing trace with hash -276078875, now seen corresponding path program 50 times [2021-10-08 16:14:38,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:38,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682106367] [2021-10-08 16:14:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:38,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:39,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:39,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682106367] [2021-10-08 16:14:39,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682106367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:39,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661829831] [2021-10-08 16:14:39,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:39,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:39,919 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:39,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-08 16:14:40,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:40,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:40,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-08 16:14:40,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:40,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661829831] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:40,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:40,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2021-10-08 16:14:40,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260439826] [2021-10-08 16:14:40,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-08 16:14:40,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-08 16:14:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:14:40,568 INFO L87 Difference]: Start difference. First operand 444 states and 1050 transitions. Second operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:41,066 INFO L93 Difference]: Finished difference Result 866 states and 2051 transitions. [2021-10-08 16:14:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 16:14:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-08 16:14:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:41,068 INFO L225 Difference]: With dead ends: 866 [2021-10-08 16:14:41,068 INFO L226 Difference]: Without dead ends: 656 [2021-10-08 16:14:41,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 974.9ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 16:14:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-10-08 16:14:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 452. [2021-10-08 16:14:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 449 states have (on average 2.3808463251670378) internal successors, (1069), 451 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1069 transitions. [2021-10-08 16:14:41,077 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1069 transitions. Word has length 54 [2021-10-08 16:14:41,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:41,078 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1069 transitions. [2021-10-08 16:14:41,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1069 transitions. [2021-10-08 16:14:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-08 16:14:41,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:41,079 INFO L512 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1] [2021-10-08 16:14:41,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:41,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:41,294 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:41,295 INFO L82 PathProgramCache]: Analyzing trace with hash 31491115, now seen corresponding path program 51 times [2021-10-08 16:14:41,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:41,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637797877] [2021-10-08 16:14:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:41,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:42,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:42,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637797877] [2021-10-08 16:14:42,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637797877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:42,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923289345] [2021-10-08 16:14:42,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:14:42,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:42,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:42,509 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:42,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-08 16:14:43,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-08 16:14:43,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:43,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-08 16:14:43,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:43,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923289345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:43,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:43,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2021-10-08 16:14:43,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785622969] [2021-10-08 16:14:43,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-08 16:14:43,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:43,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-08 16:14:43,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:14:43,191 INFO L87 Difference]: Start difference. First operand 452 states and 1069 transitions. Second operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:43,733 INFO L93 Difference]: Finished difference Result 882 states and 2089 transitions. [2021-10-08 16:14:43,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 16:14:43,739 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-08 16:14:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:43,740 INFO L225 Difference]: With dead ends: 882 [2021-10-08 16:14:43,741 INFO L226 Difference]: Without dead ends: 668 [2021-10-08 16:14:43,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1073.4ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 16:14:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-08 16:14:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 460. [2021-10-08 16:14:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 457 states have (on average 2.3807439824945296) internal successors, (1088), 459 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1088 transitions. [2021-10-08 16:14:43,752 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1088 transitions. Word has length 55 [2021-10-08 16:14:43,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:43,752 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 1088 transitions. [2021-10-08 16:14:43,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1088 transitions. [2021-10-08 16:14:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-08 16:14:43,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:43,754 INFO L512 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1] [2021-10-08 16:14:43,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:43,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:43,968 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:43,968 INFO L82 PathProgramCache]: Analyzing trace with hash 976226213, now seen corresponding path program 52 times [2021-10-08 16:14:43,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:43,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19105242] [2021-10-08 16:14:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:43,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:45,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:45,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19105242] [2021-10-08 16:14:45,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19105242] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:45,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620961132] [2021-10-08 16:14:45,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:14:45,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:45,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:45,153 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:45,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-08 16:14:45,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:14:45,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:45,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-08 16:14:45,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:45,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620961132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:45,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:45,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2021-10-08 16:14:45,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246027649] [2021-10-08 16:14:45,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-08 16:14:45,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:45,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-08 16:14:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:14:45,825 INFO L87 Difference]: Start difference. First operand 460 states and 1088 transitions. Second operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:46,580 INFO L93 Difference]: Finished difference Result 898 states and 2127 transitions. [2021-10-08 16:14:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 16:14:46,580 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 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 56 [2021-10-08 16:14:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:46,582 INFO L225 Difference]: With dead ends: 898 [2021-10-08 16:14:46,582 INFO L226 Difference]: Without dead ends: 680 [2021-10-08 16:14:46,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1056.7ms TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 16:14:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-10-08 16:14:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 468. [2021-10-08 16:14:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 465 states have (on average 2.3806451612903228) internal successors, (1107), 467 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1107 transitions. [2021-10-08 16:14:46,594 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1107 transitions. Word has length 56 [2021-10-08 16:14:46,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:46,595 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1107 transitions. [2021-10-08 16:14:46,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1107 transitions. [2021-10-08 16:14:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-08 16:14:46,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:46,597 INFO L512 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1] [2021-10-08 16:14:46,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:46,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:46,811 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:46,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:46,812 INFO L82 PathProgramCache]: Analyzing trace with hash 198243179, now seen corresponding path program 53 times [2021-10-08 16:14:46,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:46,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712759504] [2021-10-08 16:14:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:46,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:48,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:48,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712759504] [2021-10-08 16:14:48,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712759504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:48,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431709165] [2021-10-08 16:14:48,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:14:48,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:48,279 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:48,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-08 16:14:48,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2021-10-08 16:14:48,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:48,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-08 16:14:48,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:49,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431709165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:49,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:49,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2021-10-08 16:14:49,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917116631] [2021-10-08 16:14:49,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-10-08 16:14:49,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:49,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-10-08 16:14:49,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:14:49,036 INFO L87 Difference]: Start difference. First operand 468 states and 1107 transitions. Second operand has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:49,636 INFO L93 Difference]: Finished difference Result 914 states and 2165 transitions. [2021-10-08 16:14:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 16:14:49,636 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-08 16:14:49,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:49,638 INFO L225 Difference]: With dead ends: 914 [2021-10-08 16:14:49,639 INFO L226 Difference]: Without dead ends: 692 [2021-10-08 16:14:49,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1277.0ms TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 16:14:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-10-08 16:14:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 476. [2021-10-08 16:14:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 473 states have (on average 2.380549682875264) internal successors, (1126), 475 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1126 transitions. [2021-10-08 16:14:49,651 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1126 transitions. Word has length 57 [2021-10-08 16:14:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:49,651 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1126 transitions. [2021-10-08 16:14:49,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1126 transitions. [2021-10-08 16:14:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-08 16:14:49,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:49,653 INFO L512 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1] [2021-10-08 16:14:49,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:49,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-08 16:14:49,868 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:49,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1850572901, now seen corresponding path program 54 times [2021-10-08 16:14:49,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:49,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852262705] [2021-10-08 16:14:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:49,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:51,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852262705] [2021-10-08 16:14:51,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852262705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:51,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29795408] [2021-10-08 16:14:51,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:14:51,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:51,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:51,258 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:51,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-08 16:14:51,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2021-10-08 16:14:51,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:51,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-08 16:14:51,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:52,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29795408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:52,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:52,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2021-10-08 16:14:52,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147018758] [2021-10-08 16:14:52,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-08 16:14:52,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:52,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-08 16:14:52,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:14:52,050 INFO L87 Difference]: Start difference. First operand 476 states and 1126 transitions. Second operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:52,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:52,691 INFO L93 Difference]: Finished difference Result 930 states and 2203 transitions. [2021-10-08 16:14:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 16:14:52,692 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 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 58 [2021-10-08 16:14:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:52,694 INFO L225 Difference]: With dead ends: 930 [2021-10-08 16:14:52,694 INFO L226 Difference]: Without dead ends: 704 [2021-10-08 16:14:52,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1251.4ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 16:14:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-08 16:14:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 484. [2021-10-08 16:14:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 2.3804573804573805) internal successors, (1145), 483 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1145 transitions. [2021-10-08 16:14:52,703 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1145 transitions. Word has length 58 [2021-10-08 16:14:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:52,703 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 1145 transitions. [2021-10-08 16:14:52,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1145 transitions. [2021-10-08 16:14:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-08 16:14:52,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:52,705 INFO L512 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1] [2021-10-08 16:14:52,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-10-08 16:14:52,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:52,917 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:52,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1533186731, now seen corresponding path program 55 times [2021-10-08 16:14:52,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:52,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200654735] [2021-10-08 16:14:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:52,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:54,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:54,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200654735] [2021-10-08 16:14:54,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200654735] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:54,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196210227] [2021-10-08 16:14:54,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:14:54,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:54,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:54,390 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:54,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-08 16:14:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:55,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-08 16:14:55,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:55,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196210227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:55,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:55,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2021-10-08 16:14:55,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900461169] [2021-10-08 16:14:55,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-10-08 16:14:55,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-10-08 16:14:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:14:55,166 INFO L87 Difference]: Start difference. First operand 484 states and 1145 transitions. Second operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:55,847 INFO L93 Difference]: Finished difference Result 946 states and 2241 transitions. [2021-10-08 16:14:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 16:14:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-08 16:14:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:55,850 INFO L225 Difference]: With dead ends: 946 [2021-10-08 16:14:55,850 INFO L226 Difference]: Without dead ends: 716 [2021-10-08 16:14:55,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1326.5ms TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 16:14:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-08 16:14:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 492. [2021-10-08 16:14:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 489 states have (on average 2.3803680981595092) internal successors, (1164), 491 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1164 transitions. [2021-10-08 16:14:55,859 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1164 transitions. Word has length 59 [2021-10-08 16:14:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:55,860 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1164 transitions. [2021-10-08 16:14:55,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1164 transitions. [2021-10-08 16:14:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-08 16:14:55,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:55,862 INFO L512 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1] [2021-10-08 16:14:55,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:56,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-08 16:14:56,077 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:56,077 INFO L82 PathProgramCache]: Analyzing trace with hash 284150053, now seen corresponding path program 56 times [2021-10-08 16:14:56,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:56,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650847686] [2021-10-08 16:14:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:56,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:14:57,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:57,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:14:57,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650847686] [2021-10-08 16:14:57,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650847686] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:57,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633975833] [2021-10-08 16:14:57,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:14:57,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:14:57,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:14:57,535 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:14:57,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-08 16:14:58,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:14:58,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:14:58,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-08 16:14:58,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:14:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:14:58,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633975833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:14:58,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:14:58,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2021-10-08 16:14:58,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063959152] [2021-10-08 16:14:58,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-10-08 16:14:58,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:14:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-10-08 16:14:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:14:58,337 INFO L87 Difference]: Start difference. First operand 492 states and 1164 transitions. Second operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:14:59,090 INFO L93 Difference]: Finished difference Result 962 states and 2279 transitions. [2021-10-08 16:14:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 16:14:59,091 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-08 16:14:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:14:59,092 INFO L225 Difference]: With dead ends: 962 [2021-10-08 16:14:59,093 INFO L226 Difference]: Without dead ends: 728 [2021-10-08 16:14:59,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1310.0ms TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 16:14:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-10-08 16:14:59,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 500. [2021-10-08 16:14:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 497 states have (on average 2.380281690140845) internal successors, (1183), 499 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1183 transitions. [2021-10-08 16:14:59,106 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1183 transitions. Word has length 60 [2021-10-08 16:14:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:14:59,106 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 1183 transitions. [2021-10-08 16:14:59,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:14:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1183 transitions. [2021-10-08 16:14:59,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-08 16:14:59,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:14:59,108 INFO L512 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1] [2021-10-08 16:14:59,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-08 16:14:59,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-08 16:14:59,321 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:14:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:14:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash 218718699, now seen corresponding path program 57 times [2021-10-08 16:14:59,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:14:59,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235376917] [2021-10-08 16:14:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:14:59,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:14:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:00,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:00,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235376917] [2021-10-08 16:15:00,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235376917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:00,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008117852] [2021-10-08 16:15:00,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:00,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:00,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:00,949 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:00,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-08 16:15:01,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-10-08 16:15:01,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:01,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 60 conjunts are in the unsatisfiable core [2021-10-08 16:15:01,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:01,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008117852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:01,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:01,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2021-10-08 16:15:01,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092851776] [2021-10-08 16:15:01,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-10-08 16:15:01,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:01,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-10-08 16:15:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:15:01,842 INFO L87 Difference]: Start difference. First operand 500 states and 1183 transitions. Second operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:02,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:02,692 INFO L93 Difference]: Finished difference Result 978 states and 2317 transitions. [2021-10-08 16:15:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-08 16:15:02,693 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-08 16:15:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:02,695 INFO L225 Difference]: With dead ends: 978 [2021-10-08 16:15:02,695 INFO L226 Difference]: Without dead ends: 740 [2021-10-08 16:15:02,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1451.7ms TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 16:15:02,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-08 16:15:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 508. [2021-10-08 16:15:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 505 states have (on average 2.38019801980198) internal successors, (1202), 507 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1202 transitions. [2021-10-08 16:15:02,708 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1202 transitions. Word has length 61 [2021-10-08 16:15:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:02,709 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1202 transitions. [2021-10-08 16:15:02,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1202 transitions. [2021-10-08 16:15:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-08 16:15:02,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:02,711 INFO L512 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1] [2021-10-08 16:15:02,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-08 16:15:02,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-08 16:15:02,925 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:02,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1809653275, now seen corresponding path program 58 times [2021-10-08 16:15:02,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:02,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666548742] [2021-10-08 16:15:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:02,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:04,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:04,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666548742] [2021-10-08 16:15:04,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666548742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:04,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861405390] [2021-10-08 16:15:04,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:04,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:04,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:04,626 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:04,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-08 16:15:05,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:05,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:05,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-08 16:15:05,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:05,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861405390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:05,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:05,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2021-10-08 16:15:05,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255596783] [2021-10-08 16:15:05,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-10-08 16:15:05,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:05,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-10-08 16:15:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:15:05,380 INFO L87 Difference]: Start difference. First operand 508 states and 1202 transitions. Second operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:06,121 INFO L93 Difference]: Finished difference Result 994 states and 2355 transitions. [2021-10-08 16:15:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 16:15:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-08 16:15:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:06,123 INFO L225 Difference]: With dead ends: 994 [2021-10-08 16:15:06,124 INFO L226 Difference]: Without dead ends: 752 [2021-10-08 16:15:06,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1455.6ms TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 16:15:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-10-08 16:15:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 516. [2021-10-08 16:15:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 513 states have (on average 2.3801169590643276) internal successors, (1221), 515 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1221 transitions. [2021-10-08 16:15:06,134 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1221 transitions. Word has length 62 [2021-10-08 16:15:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:06,134 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1221 transitions. [2021-10-08 16:15:06,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1221 transitions. [2021-10-08 16:15:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-08 16:15:06,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:06,136 INFO L512 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1] [2021-10-08 16:15:06,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:06,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:06,351 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:06,352 INFO L82 PathProgramCache]: Analyzing trace with hash -264675029, now seen corresponding path program 59 times [2021-10-08 16:15:06,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:06,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471280778] [2021-10-08 16:15:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:06,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:08,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:08,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471280778] [2021-10-08 16:15:08,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471280778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:08,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748287572] [2021-10-08 16:15:08,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:15:08,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:08,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:08,003 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:08,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-08 16:15:08,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-08 16:15:08,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:08,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-08 16:15:08,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:08,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748287572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:08,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:08,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2021-10-08 16:15:08,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719574065] [2021-10-08 16:15:08,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-08 16:15:08,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-08 16:15:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 16:15:08,882 INFO L87 Difference]: Start difference. First operand 516 states and 1221 transitions. Second operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:09,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:09,685 INFO L93 Difference]: Finished difference Result 1010 states and 2393 transitions. [2021-10-08 16:15:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-08 16:15:09,685 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 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 63 [2021-10-08 16:15:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:09,687 INFO L225 Difference]: With dead ends: 1010 [2021-10-08 16:15:09,688 INFO L226 Difference]: Without dead ends: 764 [2021-10-08 16:15:09,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1471.5ms TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-10-08 16:15:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-10-08 16:15:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 524. [2021-10-08 16:15:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 521 states have (on average 2.380038387715931) internal successors, (1240), 523 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1240 transitions. [2021-10-08 16:15:09,702 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1240 transitions. Word has length 63 [2021-10-08 16:15:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:09,702 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1240 transitions. [2021-10-08 16:15:09,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1240 transitions. [2021-10-08 16:15:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-08 16:15:09,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:09,704 INFO L512 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1] [2021-10-08 16:15:09,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:09,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-10-08 16:15:09,920 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash 385010341, now seen corresponding path program 60 times [2021-10-08 16:15:09,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:09,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189351897] [2021-10-08 16:15:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:09,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:11,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:11,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189351897] [2021-10-08 16:15:11,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189351897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:11,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522894926] [2021-10-08 16:15:11,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:15:11,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:11,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:11,552 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:11,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-08 16:15:12,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-10-08 16:15:12,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:12,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-08 16:15:12,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:12,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522894926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:12,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:12,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2021-10-08 16:15:12,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644357534] [2021-10-08 16:15:12,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-08 16:15:12,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:12,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-08 16:15:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:15:12,465 INFO L87 Difference]: Start difference. First operand 524 states and 1240 transitions. Second operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:13,345 INFO L93 Difference]: Finished difference Result 1026 states and 2431 transitions. [2021-10-08 16:15:13,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-08 16:15:13,345 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 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 64 [2021-10-08 16:15:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:13,348 INFO L225 Difference]: With dead ends: 1026 [2021-10-08 16:15:13,348 INFO L226 Difference]: Without dead ends: 776 [2021-10-08 16:15:13,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1484.2ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 16:15:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-10-08 16:15:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 532. [2021-10-08 16:15:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 529 states have (on average 2.379962192816635) internal successors, (1259), 531 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1259 transitions. [2021-10-08 16:15:13,363 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1259 transitions. Word has length 64 [2021-10-08 16:15:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:13,363 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1259 transitions. [2021-10-08 16:15:13,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1259 transitions. [2021-10-08 16:15:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-08 16:15:13,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:13,369 INFO L512 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1] [2021-10-08 16:15:13,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-08 16:15:13,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:13,583 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:13,584 INFO L82 PathProgramCache]: Analyzing trace with hash -949579669, now seen corresponding path program 61 times [2021-10-08 16:15:13,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:13,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913818973] [2021-10-08 16:15:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:13,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:15,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:15,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913818973] [2021-10-08 16:15:15,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913818973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:15,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523837134] [2021-10-08 16:15:15,268 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:15:15,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:15,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:15,269 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:15,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-08 16:15:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:15,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-08 16:15:15,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:16,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523837134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:16,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:16,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2021-10-08 16:15:16,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599957740] [2021-10-08 16:15:16,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-10-08 16:15:16,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:16,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-10-08 16:15:16,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:15:16,143 INFO L87 Difference]: Start difference. First operand 532 states and 1259 transitions. Second operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:17,084 INFO L93 Difference]: Finished difference Result 1042 states and 2469 transitions. [2021-10-08 16:15:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-08 16:15:17,085 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-08 16:15:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:17,087 INFO L225 Difference]: With dead ends: 1042 [2021-10-08 16:15:17,087 INFO L226 Difference]: Without dead ends: 788 [2021-10-08 16:15:17,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1548.5ms TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 16:15:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-10-08 16:15:17,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 540. [2021-10-08 16:15:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 537 states have (on average 2.3798882681564244) internal successors, (1278), 539 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 1278 transitions. [2021-10-08 16:15:17,100 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 1278 transitions. Word has length 65 [2021-10-08 16:15:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:17,100 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 1278 transitions. [2021-10-08 16:15:17,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 1278 transitions. [2021-10-08 16:15:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-08 16:15:17,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:17,102 INFO L512 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1] [2021-10-08 16:15:17,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:17,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:17,316 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:17,317 INFO L82 PathProgramCache]: Analyzing trace with hash 627802981, now seen corresponding path program 62 times [2021-10-08 16:15:17,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:17,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983796555] [2021-10-08 16:15:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:17,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:19,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:19,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:19,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983796555] [2021-10-08 16:15:19,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983796555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:19,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004073826] [2021-10-08 16:15:19,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:19,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:19,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:19,047 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:19,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-08 16:15:19,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:19,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:19,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-08 16:15:19,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:19,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004073826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:19,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:19,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2021-10-08 16:15:19,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609329195] [2021-10-08 16:15:19,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-10-08 16:15:19,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:19,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-10-08 16:15:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:15:19,974 INFO L87 Difference]: Start difference. First operand 540 states and 1278 transitions. Second operand has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:20,989 INFO L93 Difference]: Finished difference Result 1058 states and 2507 transitions. [2021-10-08 16:15:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 16:15:20,989 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-10-08 16:15:20,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:20,992 INFO L225 Difference]: With dead ends: 1058 [2021-10-08 16:15:20,993 INFO L226 Difference]: Without dead ends: 800 [2021-10-08 16:15:20,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1571.4ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 16:15:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-10-08 16:15:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 548. [2021-10-08 16:15:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 545 states have (on average 2.379816513761468) internal successors, (1297), 547 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1297 transitions. [2021-10-08 16:15:21,007 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1297 transitions. Word has length 66 [2021-10-08 16:15:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:21,007 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1297 transitions. [2021-10-08 16:15:21,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:21,007 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1297 transitions. [2021-10-08 16:15:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-08 16:15:21,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:21,009 INFO L512 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1] [2021-10-08 16:15:21,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:21,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-10-08 16:15:21,223 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2012942421, now seen corresponding path program 63 times [2021-10-08 16:15:21,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:21,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263218377] [2021-10-08 16:15:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:21,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:23,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:23,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263218377] [2021-10-08 16:15:23,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263218377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:23,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066508719] [2021-10-08 16:15:23,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:23,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:23,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:23,109 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:23,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-08 16:15:23,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2021-10-08 16:15:23,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:23,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-08 16:15:23,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:24,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066508719] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:24,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:24,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2021-10-08 16:15:24,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429056339] [2021-10-08 16:15:24,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-10-08 16:15:24,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:24,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-10-08 16:15:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:15:24,128 INFO L87 Difference]: Start difference. First operand 548 states and 1297 transitions. Second operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:25,124 INFO L93 Difference]: Finished difference Result 1074 states and 2545 transitions. [2021-10-08 16:15:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-08 16:15:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-08 16:15:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:25,132 INFO L225 Difference]: With dead ends: 1074 [2021-10-08 16:15:25,132 INFO L226 Difference]: Without dead ends: 812 [2021-10-08 16:15:25,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1711.4ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 16:15:25,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-08 16:15:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 556. [2021-10-08 16:15:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 553 states have (on average 2.3797468354430378) internal successors, (1316), 555 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1316 transitions. [2021-10-08 16:15:25,148 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1316 transitions. Word has length 67 [2021-10-08 16:15:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:25,148 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1316 transitions. [2021-10-08 16:15:25,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1316 transitions. [2021-10-08 16:15:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-08 16:15:25,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:25,151 INFO L512 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1] [2021-10-08 16:15:25,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:25,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:25,364 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:25,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2023296037, now seen corresponding path program 64 times [2021-10-08 16:15:25,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:25,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553610575] [2021-10-08 16:15:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:25,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:27,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:27,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553610575] [2021-10-08 16:15:27,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553610575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:27,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592788134] [2021-10-08 16:15:27,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:27,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:27,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:27,331 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:27,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-08 16:15:28,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:28,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:28,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 67 conjunts are in the unsatisfiable core [2021-10-08 16:15:28,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:28,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592788134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:28,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:28,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2021-10-08 16:15:28,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628914056] [2021-10-08 16:15:28,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-10-08 16:15:28,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-10-08 16:15:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:15:28,303 INFO L87 Difference]: Start difference. First operand 556 states and 1316 transitions. Second operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:29,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:29,328 INFO L93 Difference]: Finished difference Result 1090 states and 2583 transitions. [2021-10-08 16:15:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-08 16:15:29,329 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 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 68 [2021-10-08 16:15:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:29,330 INFO L225 Difference]: With dead ends: 1090 [2021-10-08 16:15:29,331 INFO L226 Difference]: Without dead ends: 824 [2021-10-08 16:15:29,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1809.1ms TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 16:15:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-10-08 16:15:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 564. [2021-10-08 16:15:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 561 states have (on average 2.379679144385027) internal successors, (1335), 563 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1335 transitions. [2021-10-08 16:15:29,340 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1335 transitions. Word has length 68 [2021-10-08 16:15:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:29,341 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 1335 transitions. [2021-10-08 16:15:29,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1335 transitions. [2021-10-08 16:15:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-08 16:15:29,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:29,342 INFO L512 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1] [2021-10-08 16:15:29,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:29,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-10-08 16:15:29,543 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:29,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:29,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1702330645, now seen corresponding path program 65 times [2021-10-08 16:15:29,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:29,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097217331] [2021-10-08 16:15:29,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:29,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:31,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:31,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097217331] [2021-10-08 16:15:31,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097217331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:31,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118289347] [2021-10-08 16:15:31,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:15:31,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:31,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:31,541 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:31,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-08 16:15:32,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-08 16:15:32,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:32,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-08 16:15:32,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:32,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118289347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:32,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:32,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2021-10-08 16:15:32,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895390173] [2021-10-08 16:15:32,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-10-08 16:15:32,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-10-08 16:15:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:15:32,586 INFO L87 Difference]: Start difference. First operand 564 states and 1335 transitions. Second operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:33,771 INFO L93 Difference]: Finished difference Result 1106 states and 2621 transitions. [2021-10-08 16:15:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-08 16:15:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 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 69 [2021-10-08 16:15:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:33,773 INFO L225 Difference]: With dead ends: 1106 [2021-10-08 16:15:33,773 INFO L226 Difference]: Without dead ends: 836 [2021-10-08 16:15:33,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1853.0ms TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 16:15:33,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-10-08 16:15:33,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 572. [2021-10-08 16:15:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 569 states have (on average 2.3796133567662565) internal successors, (1354), 571 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1354 transitions. [2021-10-08 16:15:33,782 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1354 transitions. Word has length 69 [2021-10-08 16:15:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:33,783 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1354 transitions. [2021-10-08 16:15:33,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1354 transitions. [2021-10-08 16:15:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-08 16:15:33,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:33,784 INFO L512 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1] [2021-10-08 16:15:33,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-08 16:15:33,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:33,985 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:33,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:33,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1232640795, now seen corresponding path program 66 times [2021-10-08 16:15:33,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:33,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290248292] [2021-10-08 16:15:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:33,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:36,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:36,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290248292] [2021-10-08 16:15:36,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290248292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:36,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397743112] [2021-10-08 16:15:36,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:15:36,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:36,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:36,048 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:36,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-08 16:15:36,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2021-10-08 16:15:36,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:36,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 69 conjunts are in the unsatisfiable core [2021-10-08 16:15:36,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:37,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397743112] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:37,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:37,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2021-10-08 16:15:37,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352912921] [2021-10-08 16:15:37,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-08 16:15:37,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-08 16:15:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:15:37,119 INFO L87 Difference]: Start difference. First operand 572 states and 1354 transitions. Second operand has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:38,212 INFO L93 Difference]: Finished difference Result 1122 states and 2659 transitions. [2021-10-08 16:15:38,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-08 16:15:38,214 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-08 16:15:38,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:38,215 INFO L225 Difference]: With dead ends: 1122 [2021-10-08 16:15:38,216 INFO L226 Difference]: Without dead ends: 848 [2021-10-08 16:15:38,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1901.2ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 16:15:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-10-08 16:15:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 580. [2021-10-08 16:15:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 577 states have (on average 2.3795493934142113) internal successors, (1373), 579 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1373 transitions. [2021-10-08 16:15:38,227 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1373 transitions. Word has length 70 [2021-10-08 16:15:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:38,228 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1373 transitions. [2021-10-08 16:15:38,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1373 transitions. [2021-10-08 16:15:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-08 16:15:38,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:38,229 INFO L512 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1] [2021-10-08 16:15:38,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:38,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-10-08 16:15:38,430 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:38,431 INFO L82 PathProgramCache]: Analyzing trace with hash 442842667, now seen corresponding path program 67 times [2021-10-08 16:15:38,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:38,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549082672] [2021-10-08 16:15:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:38,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:40,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:40,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549082672] [2021-10-08 16:15:40,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549082672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:40,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462406069] [2021-10-08 16:15:40,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:15:40,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:40,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:40,517 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:40,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-08 16:15:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:41,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 70 conjunts are in the unsatisfiable core [2021-10-08 16:15:41,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:41,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462406069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:41,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2021-10-08 16:15:41,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907825384] [2021-10-08 16:15:41,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-10-08 16:15:41,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:41,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-10-08 16:15:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:15:41,567 INFO L87 Difference]: Start difference. First operand 580 states and 1373 transitions. Second operand has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:42,690 INFO L93 Difference]: Finished difference Result 1138 states and 2697 transitions. [2021-10-08 16:15:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-08 16:15:42,691 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 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 71 [2021-10-08 16:15:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:42,692 INFO L225 Difference]: With dead ends: 1138 [2021-10-08 16:15:42,693 INFO L226 Difference]: Without dead ends: 860 [2021-10-08 16:15:42,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1920.7ms TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2021-10-08 16:15:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-10-08 16:15:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 588. [2021-10-08 16:15:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 585 states have (on average 2.3794871794871795) internal successors, (1392), 587 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1392 transitions. [2021-10-08 16:15:42,702 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1392 transitions. Word has length 71 [2021-10-08 16:15:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:42,702 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1392 transitions. [2021-10-08 16:15:42,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1392 transitions. [2021-10-08 16:15:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-08 16:15:42,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:42,703 INFO L512 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1] [2021-10-08 16:15:42,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-08 16:15:42,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-08 16:15:42,910 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:42,910 INFO L82 PathProgramCache]: Analyzing trace with hash 843222437, now seen corresponding path program 68 times [2021-10-08 16:15:42,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:42,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240230504] [2021-10-08 16:15:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:42,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:45,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:45,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240230504] [2021-10-08 16:15:45,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240230504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:45,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486961937] [2021-10-08 16:15:45,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:15:45,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:45,077 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:45,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-08 16:15:45,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:15:45,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:45,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 71 conjunts are in the unsatisfiable core [2021-10-08 16:15:45,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:46,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486961937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:46,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:46,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2021-10-08 16:15:46,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368894748] [2021-10-08 16:15:46,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-10-08 16:15:46,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:46,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-10-08 16:15:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:15:46,066 INFO L87 Difference]: Start difference. First operand 588 states and 1392 transitions. Second operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:47,301 INFO L93 Difference]: Finished difference Result 1154 states and 2735 transitions. [2021-10-08 16:15:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-08 16:15:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-10-08 16:15:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:47,303 INFO L225 Difference]: With dead ends: 1154 [2021-10-08 16:15:47,303 INFO L226 Difference]: Without dead ends: 872 [2021-10-08 16:15:47,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2021.6ms TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 16:15:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-08 16:15:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 596. [2021-10-08 16:15:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 593 states have (on average 2.3794266441821246) internal successors, (1411), 595 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1411 transitions. [2021-10-08 16:15:47,328 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1411 transitions. Word has length 72 [2021-10-08 16:15:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:47,328 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 1411 transitions. [2021-10-08 16:15:47,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1411 transitions. [2021-10-08 16:15:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-08 16:15:47,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:47,330 INFO L512 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1] [2021-10-08 16:15:47,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-08 16:15:47,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-08 16:15:47,532 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:47,532 INFO L82 PathProgramCache]: Analyzing trace with hash 370093419, now seen corresponding path program 69 times [2021-10-08 16:15:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:47,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129341440] [2021-10-08 16:15:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:47,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:49,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:49,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129341440] [2021-10-08 16:15:49,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129341440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:49,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602835434] [2021-10-08 16:15:49,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:15:49,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:49,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:49,783 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:49,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-08 16:15:50,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2021-10-08 16:15:50,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:50,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-08 16:15:50,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:50,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602835434] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:50,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:50,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2021-10-08 16:15:50,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95553355] [2021-10-08 16:15:50,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-10-08 16:15:50,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-10-08 16:15:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:15:50,916 INFO L87 Difference]: Start difference. First operand 596 states and 1411 transitions. Second operand has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:52,107 INFO L93 Difference]: Finished difference Result 1170 states and 2773 transitions. [2021-10-08 16:15:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-08 16:15:52,108 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-10-08 16:15:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:52,110 INFO L225 Difference]: With dead ends: 1170 [2021-10-08 16:15:52,110 INFO L226 Difference]: Without dead ends: 884 [2021-10-08 16:15:52,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2090.7ms TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 16:15:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2021-10-08 16:15:52,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 604. [2021-10-08 16:15:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 601 states have (on average 2.3793677204658903) internal successors, (1430), 603 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1430 transitions. [2021-10-08 16:15:52,123 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1430 transitions. Word has length 73 [2021-10-08 16:15:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:52,123 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1430 transitions. [2021-10-08 16:15:52,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1430 transitions. [2021-10-08 16:15:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-08 16:15:52,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:52,124 INFO L512 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1] [2021-10-08 16:15:52,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-08 16:15:52,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:52,325 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1412004251, now seen corresponding path program 70 times [2021-10-08 16:15:52,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:52,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894487220] [2021-10-08 16:15:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:52,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:54,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:54,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894487220] [2021-10-08 16:15:54,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894487220] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:54,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712662895] [2021-10-08 16:15:54,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:15:54,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:54,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:54,651 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:54,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-08 16:15:55,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:15:55,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:15:55,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 73 conjunts are in the unsatisfiable core [2021-10-08 16:15:55,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:15:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:55,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712662895] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:55,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:15:55,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2021-10-08 16:15:55,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236109432] [2021-10-08 16:15:55,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-10-08 16:15:55,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:15:55,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-10-08 16:15:55,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 16:15:55,759 INFO L87 Difference]: Start difference. First operand 604 states and 1430 transitions. Second operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:15:57,094 INFO L93 Difference]: Finished difference Result 1186 states and 2811 transitions. [2021-10-08 16:15:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-08 16:15:57,095 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 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 74 [2021-10-08 16:15:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:15:57,096 INFO L225 Difference]: With dead ends: 1186 [2021-10-08 16:15:57,096 INFO L226 Difference]: Without dead ends: 896 [2021-10-08 16:15:57,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2170.1ms TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2021-10-08 16:15:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-10-08 16:15:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 612. [2021-10-08 16:15:57,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 609 states have (on average 2.3793103448275863) internal successors, (1449), 611 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:57,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1449 transitions. [2021-10-08 16:15:57,108 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1449 transitions. Word has length 74 [2021-10-08 16:15:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:15:57,108 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1449 transitions. [2021-10-08 16:15:57,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:15:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1449 transitions. [2021-10-08 16:15:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-08 16:15:57,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:15:57,110 INFO L512 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1] [2021-10-08 16:15:57,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-08 16:15:57,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:57,311 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:15:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:15:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash -822457173, now seen corresponding path program 71 times [2021-10-08 16:15:57,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:15:57,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218616412] [2021-10-08 16:15:57,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:15:57,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:15:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:15:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:15:59,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:15:59,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218616412] [2021-10-08 16:15:59,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218616412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:15:59,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219893891] [2021-10-08 16:15:59,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:15:59,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:15:59,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:15:59,660 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:15:59,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-08 16:16:00,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-08 16:16:00,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:00,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 74 conjunts are in the unsatisfiable core [2021-10-08 16:16:00,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:00,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219893891] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:00,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:00,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2021-10-08 16:16:00,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364048416] [2021-10-08 16:16:00,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-10-08 16:16:00,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-10-08 16:16:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:16:00,869 INFO L87 Difference]: Start difference. First operand 612 states and 1449 transitions. Second operand has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:02,212 INFO L93 Difference]: Finished difference Result 1202 states and 2849 transitions. [2021-10-08 16:16:02,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-10-08 16:16:02,213 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-08 16:16:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:02,214 INFO L225 Difference]: With dead ends: 1202 [2021-10-08 16:16:02,214 INFO L226 Difference]: Without dead ends: 908 [2021-10-08 16:16:02,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2178.6ms TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 16:16:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-10-08 16:16:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 620. [2021-10-08 16:16:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 617 states have (on average 2.379254457050243) internal successors, (1468), 619 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 1468 transitions. [2021-10-08 16:16:02,226 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 1468 transitions. Word has length 75 [2021-10-08 16:16:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:02,227 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 1468 transitions. [2021-10-08 16:16:02,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 74 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 1468 transitions. [2021-10-08 16:16:02,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-08 16:16:02,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:02,229 INFO L512 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1] [2021-10-08 16:16:02,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:02,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:02,443 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash 273633061, now seen corresponding path program 72 times [2021-10-08 16:16:02,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:02,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749415251] [2021-10-08 16:16:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:02,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:04,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:04,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749415251] [2021-10-08 16:16:04,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749415251] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:04,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603906103] [2021-10-08 16:16:04,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:16:04,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:04,889 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:04,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-08 16:16:05,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-08 16:16:05,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:05,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 75 conjunts are in the unsatisfiable core [2021-10-08 16:16:05,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:06,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603906103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:06,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:06,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2021-10-08 16:16:06,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618476790] [2021-10-08 16:16:06,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-08 16:16:06,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:06,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-08 16:16:06,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:16:06,135 INFO L87 Difference]: Start difference. First operand 620 states and 1468 transitions. Second operand has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:07,580 INFO L93 Difference]: Finished difference Result 1218 states and 2887 transitions. [2021-10-08 16:16:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-08 16:16:07,581 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 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 76 [2021-10-08 16:16:07,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:07,583 INFO L225 Difference]: With dead ends: 1218 [2021-10-08 16:16:07,583 INFO L226 Difference]: Without dead ends: 920 [2021-10-08 16:16:07,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2276.9ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 16:16:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-10-08 16:16:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 628. [2021-10-08 16:16:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 625 states have (on average 2.3792) internal successors, (1487), 627 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1487 transitions. [2021-10-08 16:16:07,593 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1487 transitions. Word has length 76 [2021-10-08 16:16:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:07,593 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1487 transitions. [2021-10-08 16:16:07,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1487 transitions. [2021-10-08 16:16:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-08 16:16:07,594 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:07,594 INFO L512 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1] [2021-10-08 16:16:07,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:07,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:07,795 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:07,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:07,796 INFO L82 PathProgramCache]: Analyzing trace with hash -107308053, now seen corresponding path program 73 times [2021-10-08 16:16:07,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:07,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079811287] [2021-10-08 16:16:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:07,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:10,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:10,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079811287] [2021-10-08 16:16:10,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079811287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:10,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036095447] [2021-10-08 16:16:10,276 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:16:10,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:10,277 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:10,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-08 16:16:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:11,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-08 16:16:11,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:11,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:11,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036095447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:11,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:11,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2021-10-08 16:16:11,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106486340] [2021-10-08 16:16:11,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-08 16:16:11,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-08 16:16:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:16:11,488 INFO L87 Difference]: Start difference. First operand 628 states and 1487 transitions. Second operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:13,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:13,038 INFO L93 Difference]: Finished difference Result 1234 states and 2925 transitions. [2021-10-08 16:16:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-08 16:16:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 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 77 [2021-10-08 16:16:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:13,040 INFO L225 Difference]: With dead ends: 1234 [2021-10-08 16:16:13,040 INFO L226 Difference]: Without dead ends: 932 [2021-10-08 16:16:13,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2317.7ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 16:16:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2021-10-08 16:16:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 636. [2021-10-08 16:16:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 633 states have (on average 2.3791469194312795) internal successors, (1506), 635 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1506 transitions. [2021-10-08 16:16:13,052 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1506 transitions. Word has length 77 [2021-10-08 16:16:13,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:13,052 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 1506 transitions. [2021-10-08 16:16:13,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1506 transitions. [2021-10-08 16:16:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-08 16:16:13,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:13,054 INFO L512 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1] [2021-10-08 16:16:13,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-08 16:16:13,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:13,255 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:13,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:13,256 INFO L82 PathProgramCache]: Analyzing trace with hash 968419301, now seen corresponding path program 74 times [2021-10-08 16:16:13,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:13,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703029865] [2021-10-08 16:16:13,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:13,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:15,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:15,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703029865] [2021-10-08 16:16:15,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703029865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:15,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114006199] [2021-10-08 16:16:15,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:16:15,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:15,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:15,813 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:15,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-08 16:16:16,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:16:16,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:16,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-08 16:16:16,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:17,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114006199] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:17,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:17,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2021-10-08 16:16:17,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432073039] [2021-10-08 16:16:17,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-08 16:16:17,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-08 16:16:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:16:17,047 INFO L87 Difference]: Start difference. First operand 636 states and 1506 transitions. Second operand has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:18,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:18,572 INFO L93 Difference]: Finished difference Result 1250 states and 2963 transitions. [2021-10-08 16:16:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-08 16:16:18,572 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-08 16:16:18,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:18,574 INFO L225 Difference]: With dead ends: 1250 [2021-10-08 16:16:18,574 INFO L226 Difference]: Without dead ends: 944 [2021-10-08 16:16:18,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 2389.1ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-08 16:16:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-10-08 16:16:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 644. [2021-10-08 16:16:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 641 states have (on average 2.3790951638065523) internal successors, (1525), 643 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1525 transitions. [2021-10-08 16:16:18,585 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1525 transitions. Word has length 78 [2021-10-08 16:16:18,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:18,586 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 1525 transitions. [2021-10-08 16:16:18,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 77 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1525 transitions. [2021-10-08 16:16:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-08 16:16:18,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:18,588 INFO L512 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1] [2021-10-08 16:16:18,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-10-08 16:16:18,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:18,789 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:18,789 INFO L82 PathProgramCache]: Analyzing trace with hash -43771093, now seen corresponding path program 75 times [2021-10-08 16:16:18,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:18,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650998592] [2021-10-08 16:16:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:18,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:21,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:21,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650998592] [2021-10-08 16:16:21,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650998592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:21,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716717376] [2021-10-08 16:16:21,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:16:21,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:21,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:21,390 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:21,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-08 16:16:22,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2021-10-08 16:16:22,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:22,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 78 conjunts are in the unsatisfiable core [2021-10-08 16:16:22,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:22,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716717376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:22,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:22,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2021-10-08 16:16:22,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713506438] [2021-10-08 16:16:22,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-08 16:16:22,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-08 16:16:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-08 16:16:22,700 INFO L87 Difference]: Start difference. First operand 644 states and 1525 transitions. Second operand has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:24,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:24,378 INFO L93 Difference]: Finished difference Result 1266 states and 3001 transitions. [2021-10-08 16:16:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-08 16:16:24,379 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-08 16:16:24,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:24,381 INFO L225 Difference]: With dead ends: 1266 [2021-10-08 16:16:24,381 INFO L226 Difference]: Without dead ends: 956 [2021-10-08 16:16:24,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2432.5ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-08 16:16:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2021-10-08 16:16:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 652. [2021-10-08 16:16:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 649 states have (on average 2.37904468412943) internal successors, (1544), 651 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1544 transitions. [2021-10-08 16:16:24,395 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1544 transitions. Word has length 79 [2021-10-08 16:16:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:24,396 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1544 transitions. [2021-10-08 16:16:24,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1544 transitions. [2021-10-08 16:16:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-08 16:16:24,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:24,398 INFO L512 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1] [2021-10-08 16:16:24,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:24,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:24,614 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1356902235, now seen corresponding path program 76 times [2021-10-08 16:16:24,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:24,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039399135] [2021-10-08 16:16:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:24,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:27,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:27,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039399135] [2021-10-08 16:16:27,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039399135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:27,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361040034] [2021-10-08 16:16:27,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:16:27,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:27,306 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:27,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-08 16:16:28,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:16:28,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:28,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-08 16:16:28,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:28,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361040034] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:28,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:28,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2021-10-08 16:16:28,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11626720] [2021-10-08 16:16:28,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-08 16:16:28,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-08 16:16:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 16:16:28,588 INFO L87 Difference]: Start difference. First operand 652 states and 1544 transitions. Second operand has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:30,254 INFO L93 Difference]: Finished difference Result 1282 states and 3039 transitions. [2021-10-08 16:16:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-08 16:16:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-08 16:16:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:30,257 INFO L225 Difference]: With dead ends: 1282 [2021-10-08 16:16:30,257 INFO L226 Difference]: Without dead ends: 968 [2021-10-08 16:16:30,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2520.6ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-08 16:16:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-10-08 16:16:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 660. [2021-10-08 16:16:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 657 states have (on average 2.3789954337899544) internal successors, (1563), 659 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1563 transitions. [2021-10-08 16:16:30,266 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1563 transitions. Word has length 80 [2021-10-08 16:16:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:30,267 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1563 transitions. [2021-10-08 16:16:30,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1563 transitions. [2021-10-08 16:16:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-08 16:16:30,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:30,268 INFO L512 BasicCegarLoop]: trace histogram [77, 1, 1, 1, 1] [2021-10-08 16:16:30,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-10-08 16:16:30,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-08 16:16:30,469 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:30,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:30,470 INFO L82 PathProgramCache]: Analyzing trace with hash 885705323, now seen corresponding path program 77 times [2021-10-08 16:16:30,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:30,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432967055] [2021-10-08 16:16:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:30,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:33,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:33,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432967055] [2021-10-08 16:16:33,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432967055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:33,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126628890] [2021-10-08 16:16:33,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:16:33,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:33,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:33,259 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:33,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-08 16:16:34,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-10-08 16:16:34,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:34,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 80 conjunts are in the unsatisfiable core [2021-10-08 16:16:34,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:34,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126628890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:34,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:34,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2021-10-08 16:16:34,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290236018] [2021-10-08 16:16:34,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-10-08 16:16:34,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-10-08 16:16:34,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-08 16:16:34,555 INFO L87 Difference]: Start difference. First operand 660 states and 1563 transitions. Second operand has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 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 16:16:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:36,220 INFO L93 Difference]: Finished difference Result 1298 states and 3077 transitions. [2021-10-08 16:16:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-10-08 16:16:36,220 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-08 16:16:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:36,222 INFO L225 Difference]: With dead ends: 1298 [2021-10-08 16:16:36,222 INFO L226 Difference]: Without dead ends: 980 [2021-10-08 16:16:36,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2616.1ms TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2021-10-08 16:16:36,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2021-10-08 16:16:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 668. [2021-10-08 16:16:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 665 states have (on average 2.3789473684210525) internal successors, (1582), 667 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1582 transitions. [2021-10-08 16:16:36,236 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1582 transitions. Word has length 81 [2021-10-08 16:16:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:36,236 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1582 transitions. [2021-10-08 16:16:36,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 1.0625) internal successors, (85), 80 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 16:16:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1582 transitions. [2021-10-08 16:16:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-08 16:16:36,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:36,238 INFO L512 BasicCegarLoop]: trace histogram [78, 1, 1, 1, 1] [2021-10-08 16:16:36,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-10-08 16:16:36,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:36,452 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:36,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1687062885, now seen corresponding path program 78 times [2021-10-08 16:16:36,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:36,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291784953] [2021-10-08 16:16:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:36,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:39,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:39,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291784953] [2021-10-08 16:16:39,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291784953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:39,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217381246] [2021-10-08 16:16:39,301 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:16:39,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:39,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:39,302 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:39,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-08 16:16:40,467 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2021-10-08 16:16:40,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:40,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 81 conjunts are in the unsatisfiable core [2021-10-08 16:16:40,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:40,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217381246] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:40,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:40,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2021-10-08 16:16:40,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731303712] [2021-10-08 16:16:40,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-10-08 16:16:40,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-10-08 16:16:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-08 16:16:40,699 INFO L87 Difference]: Start difference. First operand 668 states and 1582 transitions. Second operand has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:42,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:42,745 INFO L93 Difference]: Finished difference Result 1314 states and 3115 transitions. [2021-10-08 16:16:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-08 16:16:42,745 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 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 82 [2021-10-08 16:16:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:42,747 INFO L225 Difference]: With dead ends: 1314 [2021-10-08 16:16:42,747 INFO L226 Difference]: Without dead ends: 992 [2021-10-08 16:16:42,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2657.8ms TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2021-10-08 16:16:42,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2021-10-08 16:16:42,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 676. [2021-10-08 16:16:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 673 states have (on average 2.3789004457652303) internal successors, (1601), 675 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1601 transitions. [2021-10-08 16:16:42,757 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1601 transitions. Word has length 82 [2021-10-08 16:16:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:42,757 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 1601 transitions. [2021-10-08 16:16:42,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:42,757 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1601 transitions. [2021-10-08 16:16:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-08 16:16:42,758 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:42,758 INFO L512 BasicCegarLoop]: trace histogram [79, 1, 1, 1, 1] [2021-10-08 16:16:42,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:42,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-10-08 16:16:42,959 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:42,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:42,960 INFO L82 PathProgramCache]: Analyzing trace with hash 759343531, now seen corresponding path program 79 times [2021-10-08 16:16:42,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:42,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413128964] [2021-10-08 16:16:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:42,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:45,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:45,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413128964] [2021-10-08 16:16:45,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413128964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:45,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022641116] [2021-10-08 16:16:45,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:16:45,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:45,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:45,823 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:45,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-08 16:16:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:46,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 82 conjunts are in the unsatisfiable core [2021-10-08 16:16:46,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:47,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022641116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:47,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:47,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2021-10-08 16:16:47,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874543608] [2021-10-08 16:16:47,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-10-08 16:16:47,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-10-08 16:16:47,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:16:47,199 INFO L87 Difference]: Start difference. First operand 676 states and 1601 transitions. Second operand has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:49,117 INFO L93 Difference]: Finished difference Result 1330 states and 3153 transitions. [2021-10-08 16:16:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-08 16:16:49,117 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-10-08 16:16:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:49,119 INFO L225 Difference]: With dead ends: 1330 [2021-10-08 16:16:49,119 INFO L226 Difference]: Without dead ends: 1004 [2021-10-08 16:16:49,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2681.6ms TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2021-10-08 16:16:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2021-10-08 16:16:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 684. [2021-10-08 16:16:49,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 681 states have (on average 2.3788546255506606) internal successors, (1620), 683 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1620 transitions. [2021-10-08 16:16:49,139 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1620 transitions. Word has length 83 [2021-10-08 16:16:49,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:49,139 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1620 transitions. [2021-10-08 16:16:49,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1620 transitions. [2021-10-08 16:16:49,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-08 16:16:49,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:49,141 INFO L512 BasicCegarLoop]: trace histogram [80, 1, 1, 1, 1] [2021-10-08 16:16:49,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-10-08 16:16:49,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:49,342 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2064814629, now seen corresponding path program 80 times [2021-10-08 16:16:49,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:49,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689088014] [2021-10-08 16:16:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:49,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:52,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:52,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689088014] [2021-10-08 16:16:52,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689088014] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:52,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698100651] [2021-10-08 16:16:52,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:16:52,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:52,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:52,311 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:52,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-08 16:16:53,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:16:53,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:16:53,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 83 conjunts are in the unsatisfiable core [2021-10-08 16:16:53,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:16:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:53,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698100651] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:53,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:16:53,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2021-10-08 16:16:53,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118377021] [2021-10-08 16:16:53,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-10-08 16:16:53,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:16:53,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-10-08 16:16:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-08 16:16:53,710 INFO L87 Difference]: Start difference. First operand 684 states and 1620 transitions. Second operand has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 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 16:16:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:16:55,712 INFO L93 Difference]: Finished difference Result 1346 states and 3191 transitions. [2021-10-08 16:16:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-08 16:16:55,713 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-08 16:16:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:16:55,715 INFO L225 Difference]: With dead ends: 1346 [2021-10-08 16:16:55,715 INFO L226 Difference]: Without dead ends: 1016 [2021-10-08 16:16:55,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2786.5ms TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2021-10-08 16:16:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2021-10-08 16:16:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 692. [2021-10-08 16:16:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 689 states have (on average 2.378809869375907) internal successors, (1639), 691 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:16:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1639 transitions. [2021-10-08 16:16:55,725 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1639 transitions. Word has length 84 [2021-10-08 16:16:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:16:55,725 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 1639 transitions. [2021-10-08 16:16:55,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 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 16:16:55,726 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1639 transitions. [2021-10-08 16:16:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-08 16:16:55,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:16:55,727 INFO L512 BasicCegarLoop]: trace histogram [81, 1, 1, 1, 1] [2021-10-08 16:16:55,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-08 16:16:55,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:55,928 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:16:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:16:55,928 INFO L82 PathProgramCache]: Analyzing trace with hash -415254293, now seen corresponding path program 81 times [2021-10-08 16:16:55,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:16:55,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274759100] [2021-10-08 16:16:55,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:16:55,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:16:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:16:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:16:58,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:16:58,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274759100] [2021-10-08 16:16:58,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274759100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:16:58,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856794588] [2021-10-08 16:16:58,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:16:58,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:16:58,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:16:58,987 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:16:58,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-08 16:17:00,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-10-08 16:17:00,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:00,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-08 16:17:00,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:00,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856794588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:00,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:00,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2021-10-08 16:17:00,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604092592] [2021-10-08 16:17:00,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-10-08 16:17:00,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:00,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-10-08 16:17:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:17:00,477 INFO L87 Difference]: Start difference. First operand 692 states and 1639 transitions. Second operand has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:02,478 INFO L93 Difference]: Finished difference Result 1362 states and 3229 transitions. [2021-10-08 16:17:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-10-08 16:17:02,478 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-08 16:17:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:02,480 INFO L225 Difference]: With dead ends: 1362 [2021-10-08 16:17:02,480 INFO L226 Difference]: Without dead ends: 1028 [2021-10-08 16:17:02,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2875.7ms TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2021-10-08 16:17:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-10-08 16:17:02,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 700. [2021-10-08 16:17:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 697 states have (on average 2.3787661406025826) internal successors, (1658), 699 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1658 transitions. [2021-10-08 16:17:02,490 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1658 transitions. Word has length 85 [2021-10-08 16:17:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:02,491 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1658 transitions. [2021-10-08 16:17:02,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1658 transitions. [2021-10-08 16:17:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-08 16:17:02,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:02,492 INFO L512 BasicCegarLoop]: trace histogram [82, 1, 1, 1, 1] [2021-10-08 16:17:02,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-08 16:17:02,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:02,693 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:02,694 INFO L82 PathProgramCache]: Analyzing trace with hash 12020453, now seen corresponding path program 82 times [2021-10-08 16:17:02,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:02,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974085885] [2021-10-08 16:17:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:02,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:05,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:05,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974085885] [2021-10-08 16:17:05,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974085885] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:05,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144129448] [2021-10-08 16:17:05,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:17:05,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:05,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:05,823 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:05,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-08 16:17:07,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:17:07,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:07,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 85 conjunts are in the unsatisfiable core [2021-10-08 16:17:07,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:07,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144129448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:07,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:07,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2021-10-08 16:17:07,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260467813] [2021-10-08 16:17:07,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-10-08 16:17:07,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-10-08 16:17:07,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:17:07,263 INFO L87 Difference]: Start difference. First operand 700 states and 1658 transitions. Second operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:09,242 INFO L93 Difference]: Finished difference Result 1378 states and 3267 transitions. [2021-10-08 16:17:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-10-08 16:17:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 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 86 [2021-10-08 16:17:09,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:09,244 INFO L225 Difference]: With dead ends: 1378 [2021-10-08 16:17:09,244 INFO L226 Difference]: Without dead ends: 1040 [2021-10-08 16:17:09,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2946.7ms TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2021-10-08 16:17:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-10-08 16:17:09,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 708. [2021-10-08 16:17:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 705 states have (on average 2.3787234042553194) internal successors, (1677), 707 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1677 transitions. [2021-10-08 16:17:09,256 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1677 transitions. Word has length 86 [2021-10-08 16:17:09,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:09,257 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1677 transitions. [2021-10-08 16:17:09,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:09,257 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1677 transitions. [2021-10-08 16:17:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-08 16:17:09,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:09,258 INFO L512 BasicCegarLoop]: trace histogram [83, 1, 1, 1, 1] [2021-10-08 16:17:09,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-08 16:17:09,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:09,459 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:09,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:09,460 INFO L82 PathProgramCache]: Analyzing trace with hash 372635691, now seen corresponding path program 83 times [2021-10-08 16:17:09,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:09,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966680947] [2021-10-08 16:17:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:09,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:12,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:12,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966680947] [2021-10-08 16:17:12,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966680947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:12,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973125468] [2021-10-08 16:17:12,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:17:12,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:12,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:12,640 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:12,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-08 16:17:13,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-08 16:17:13,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:13,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 86 conjunts are in the unsatisfiable core [2021-10-08 16:17:13,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:14,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973125468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:14,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:14,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2021-10-08 16:17:14,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816386181] [2021-10-08 16:17:14,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-10-08 16:17:14,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-10-08 16:17:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:17:14,200 INFO L87 Difference]: Start difference. First operand 708 states and 1677 transitions. Second operand has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:16,380 INFO L93 Difference]: Finished difference Result 1394 states and 3305 transitions. [2021-10-08 16:17:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-10-08 16:17:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 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 87 [2021-10-08 16:17:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:16,383 INFO L225 Difference]: With dead ends: 1394 [2021-10-08 16:17:16,383 INFO L226 Difference]: Without dead ends: 1052 [2021-10-08 16:17:16,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3003.5ms TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2021-10-08 16:17:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2021-10-08 16:17:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 716. [2021-10-08 16:17:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 713 states have (on average 2.378681626928471) internal successors, (1696), 715 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1696 transitions. [2021-10-08 16:17:16,393 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1696 transitions. Word has length 87 [2021-10-08 16:17:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:16,394 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1696 transitions. [2021-10-08 16:17:16,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 1.058139534883721) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:16,394 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1696 transitions. [2021-10-08 16:17:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-08 16:17:16,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:16,395 INFO L512 BasicCegarLoop]: trace histogram [84, 1, 1, 1, 1] [2021-10-08 16:17:16,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:16,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:16,596 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:16,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1333193819, now seen corresponding path program 84 times [2021-10-08 16:17:16,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:16,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361449692] [2021-10-08 16:17:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:16,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:19,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:19,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361449692] [2021-10-08 16:17:19,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361449692] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:19,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104963798] [2021-10-08 16:17:19,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:17:19,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:19,861 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:19,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-08 16:17:21,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-10-08 16:17:21,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:21,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 87 conjunts are in the unsatisfiable core [2021-10-08 16:17:21,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:21,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104963798] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:21,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:21,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2021-10-08 16:17:21,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811594061] [2021-10-08 16:17:21,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-10-08 16:17:21,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-10-08 16:17:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-08 16:17:21,474 INFO L87 Difference]: Start difference. First operand 716 states and 1696 transitions. Second operand has 88 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:23,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:23,623 INFO L93 Difference]: Finished difference Result 1410 states and 3343 transitions. [2021-10-08 16:17:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-10-08 16:17:23,624 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 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 88 [2021-10-08 16:17:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:23,626 INFO L225 Difference]: With dead ends: 1410 [2021-10-08 16:17:23,626 INFO L226 Difference]: Without dead ends: 1064 [2021-10-08 16:17:23,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3073.4ms TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2021-10-08 16:17:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2021-10-08 16:17:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 724. [2021-10-08 16:17:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 721 states have (on average 2.378640776699029) internal successors, (1715), 723 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1715 transitions. [2021-10-08 16:17:23,637 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1715 transitions. Word has length 88 [2021-10-08 16:17:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:23,637 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1715 transitions. [2021-10-08 16:17:23,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1715 transitions. [2021-10-08 16:17:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-08 16:17:23,639 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:23,639 INFO L512 BasicCegarLoop]: trace histogram [85, 1, 1, 1, 1] [2021-10-08 16:17:23,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-10-08 16:17:23,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-10-08 16:17:23,840 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:23,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1620666219, now seen corresponding path program 85 times [2021-10-08 16:17:23,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:23,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930045355] [2021-10-08 16:17:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:23,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:27,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:27,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:27,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930045355] [2021-10-08 16:17:27,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930045355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:27,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925297421] [2021-10-08 16:17:27,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:17:27,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:27,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:27,166 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:27,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-08 16:17:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:28,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 88 conjunts are in the unsatisfiable core [2021-10-08 16:17:28,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:28,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925297421] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:28,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:28,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2021-10-08 16:17:28,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120246727] [2021-10-08 16:17:28,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-10-08 16:17:28,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:28,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-10-08 16:17:28,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-08 16:17:28,689 INFO L87 Difference]: Start difference. First operand 724 states and 1715 transitions. Second operand has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:31,015 INFO L93 Difference]: Finished difference Result 1426 states and 3381 transitions. [2021-10-08 16:17:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-10-08 16:17:31,015 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-10-08 16:17:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:31,017 INFO L225 Difference]: With dead ends: 1426 [2021-10-08 16:17:31,017 INFO L226 Difference]: Without dead ends: 1076 [2021-10-08 16:17:31,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3137.4ms TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2021-10-08 16:17:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2021-10-08 16:17:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 732. [2021-10-08 16:17:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 729 states have (on average 2.3786008230452675) internal successors, (1734), 731 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1734 transitions. [2021-10-08 16:17:31,034 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1734 transitions. Word has length 89 [2021-10-08 16:17:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:31,034 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1734 transitions. [2021-10-08 16:17:31,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1734 transitions. [2021-10-08 16:17:31,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-08 16:17:31,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:31,036 INFO L512 BasicCegarLoop]: trace histogram [86, 1, 1, 1, 1] [2021-10-08 16:17:31,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-08 16:17:31,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-10-08 16:17:31,239 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:31,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:31,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1298953115, now seen corresponding path program 86 times [2021-10-08 16:17:31,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:31,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773996557] [2021-10-08 16:17:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:31,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:34,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:34,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773996557] [2021-10-08 16:17:34,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773996557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:34,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233023866] [2021-10-08 16:17:34,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:17:34,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:34,658 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:34,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-08 16:17:35,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:17:35,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:35,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 89 conjunts are in the unsatisfiable core [2021-10-08 16:17:35,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:36,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233023866] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:36,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:36,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2021-10-08 16:17:36,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194671906] [2021-10-08 16:17:36,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-10-08 16:17:36,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:36,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-10-08 16:17:36,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-08 16:17:36,227 INFO L87 Difference]: Start difference. First operand 732 states and 1734 transitions. Second operand has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:38,490 INFO L93 Difference]: Finished difference Result 1442 states and 3419 transitions. [2021-10-08 16:17:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-10-08 16:17:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-08 16:17:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:38,492 INFO L225 Difference]: With dead ends: 1442 [2021-10-08 16:17:38,493 INFO L226 Difference]: Without dead ends: 1088 [2021-10-08 16:17:38,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3200.3ms TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2021-10-08 16:17:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-10-08 16:17:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 740. [2021-10-08 16:17:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 737 states have (on average 2.378561736770692) internal successors, (1753), 739 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1753 transitions. [2021-10-08 16:17:38,504 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1753 transitions. Word has length 90 [2021-10-08 16:17:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:38,504 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1753 transitions. [2021-10-08 16:17:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1753 transitions. [2021-10-08 16:17:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-08 16:17:38,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:38,505 INFO L512 BasicCegarLoop]: trace histogram [87, 1, 1, 1, 1] [2021-10-08 16:17:38,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-08 16:17:38,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:38,708 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:38,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1612839253, now seen corresponding path program 87 times [2021-10-08 16:17:38,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:38,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646343853] [2021-10-08 16:17:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:38,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:42,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:42,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646343853] [2021-10-08 16:17:42,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646343853] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:42,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060256742] [2021-10-08 16:17:42,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:17:42,194 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:42,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:42,195 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:42,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-08 16:17:43,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2021-10-08 16:17:43,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:43,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 90 conjunts are in the unsatisfiable core [2021-10-08 16:17:43,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:43,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060256742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:43,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:43,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2021-10-08 16:17:43,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479647596] [2021-10-08 16:17:43,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-10-08 16:17:43,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-10-08 16:17:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 16:17:43,856 INFO L87 Difference]: Start difference. First operand 740 states and 1753 transitions. Second operand has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:46,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:46,523 INFO L93 Difference]: Finished difference Result 1458 states and 3457 transitions. [2021-10-08 16:17:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-10-08 16:17:46,524 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-10-08 16:17:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:46,526 INFO L225 Difference]: With dead ends: 1458 [2021-10-08 16:17:46,526 INFO L226 Difference]: Without dead ends: 1100 [2021-10-08 16:17:46,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 3294.9ms TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2021-10-08 16:17:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-10-08 16:17:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 748. [2021-10-08 16:17:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 745 states have (on average 2.3785234899328858) internal successors, (1772), 747 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1772 transitions. [2021-10-08 16:17:46,538 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1772 transitions. Word has length 91 [2021-10-08 16:17:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:46,538 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 1772 transitions. [2021-10-08 16:17:46,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 1.0555555555555556) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1772 transitions. [2021-10-08 16:17:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-08 16:17:46,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:46,540 INFO L512 BasicCegarLoop]: trace histogram [88, 1, 1, 1, 1] [2021-10-08 16:17:46,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-10-08 16:17:46,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-10-08 16:17:46,741 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:46,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1541592357, now seen corresponding path program 88 times [2021-10-08 16:17:46,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:46,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922269935] [2021-10-08 16:17:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:46,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:50,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:50,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922269935] [2021-10-08 16:17:50,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922269935] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:50,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794901683] [2021-10-08 16:17:50,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:17:50,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:50,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:50,326 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:50,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-08 16:17:51,713 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:17:51,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:51,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 91 conjunts are in the unsatisfiable core [2021-10-08 16:17:51,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:17:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:51,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794901683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:51,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:17:51,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2021-10-08 16:17:51,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135303999] [2021-10-08 16:17:51,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-10-08 16:17:51,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:17:51,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-10-08 16:17:51,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:17:51,955 INFO L87 Difference]: Start difference. First operand 748 states and 1772 transitions. Second operand has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:17:54,550 INFO L93 Difference]: Finished difference Result 1474 states and 3495 transitions. [2021-10-08 16:17:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-10-08 16:17:54,550 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 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 92 [2021-10-08 16:17:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:17:54,552 INFO L225 Difference]: With dead ends: 1474 [2021-10-08 16:17:54,552 INFO L226 Difference]: Without dead ends: 1112 [2021-10-08 16:17:54,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3385.4ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-10-08 16:17:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2021-10-08 16:17:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 756. [2021-10-08 16:17:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 753 states have (on average 2.3784860557768925) internal successors, (1791), 755 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1791 transitions. [2021-10-08 16:17:54,566 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1791 transitions. Word has length 92 [2021-10-08 16:17:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:17:54,566 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 1791 transitions. [2021-10-08 16:17:54,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:17:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1791 transitions. [2021-10-08 16:17:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-08 16:17:54,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:17:54,569 INFO L512 BasicCegarLoop]: trace histogram [89, 1, 1, 1, 1] [2021-10-08 16:17:54,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-10-08 16:17:54,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:54,774 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:17:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:17:54,775 INFO L82 PathProgramCache]: Analyzing trace with hash 544724459, now seen corresponding path program 89 times [2021-10-08 16:17:54,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:17:54,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066266081] [2021-10-08 16:17:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:17:54,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:17:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:17:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:17:58,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:17:58,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066266081] [2021-10-08 16:17:58,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066266081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:17:58,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965290148] [2021-10-08 16:17:58,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:17:58,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:17:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:17:58,414 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:17:58,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-08 16:17:59,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2021-10-08 16:17:59,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:17:59,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 92 conjunts are in the unsatisfiable core [2021-10-08 16:17:59,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:00,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965290148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:00,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:00,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2021-10-08 16:18:00,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585652606] [2021-10-08 16:18:00,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-10-08 16:18:00,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-10-08 16:18:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-08 16:18:00,123 INFO L87 Difference]: Start difference. First operand 756 states and 1791 transitions. Second operand has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:02,551 INFO L93 Difference]: Finished difference Result 1490 states and 3533 transitions. [2021-10-08 16:18:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-10-08 16:18:02,552 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 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 93 [2021-10-08 16:18:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:02,554 INFO L225 Difference]: With dead ends: 1490 [2021-10-08 16:18:02,554 INFO L226 Difference]: Without dead ends: 1124 [2021-10-08 16:18:02,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 3420.2ms TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2021-10-08 16:18:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-10-08 16:18:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 764. [2021-10-08 16:18:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 761 states have (on average 2.378449408672799) internal successors, (1810), 763 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1810 transitions. [2021-10-08 16:18:02,567 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1810 transitions. Word has length 93 [2021-10-08 16:18:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:02,567 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 1810 transitions. [2021-10-08 16:18:02,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1810 transitions. [2021-10-08 16:18:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-08 16:18:02,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:02,568 INFO L512 BasicCegarLoop]: trace histogram [90, 1, 1, 1, 1] [2021-10-08 16:18:02,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-10-08 16:18:02,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-10-08 16:18:02,769 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:18:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash -293409307, now seen corresponding path program 90 times [2021-10-08 16:18:02,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:02,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648003199] [2021-10-08 16:18:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:02,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:06,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:06,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648003199] [2021-10-08 16:18:06,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648003199] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:06,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851461460] [2021-10-08 16:18:06,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:18:06,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:06,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:06,291 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:18:06,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-08 16:18:07,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-08 16:18:07,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:07,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 93 conjunts are in the unsatisfiable core [2021-10-08 16:18:07,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:07,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851461460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:07,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:07,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2021-10-08 16:18:07,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909127943] [2021-10-08 16:18:07,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-10-08 16:18:07,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-10-08 16:18:07,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-08 16:18:07,970 INFO L87 Difference]: Start difference. First operand 764 states and 1810 transitions. Second operand has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:10,665 INFO L93 Difference]: Finished difference Result 1506 states and 3571 transitions. [2021-10-08 16:18:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-10-08 16:18:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 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 94 [2021-10-08 16:18:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:10,667 INFO L225 Difference]: With dead ends: 1506 [2021-10-08 16:18:10,667 INFO L226 Difference]: Without dead ends: 1136 [2021-10-08 16:18:10,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3314.0ms TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2021-10-08 16:18:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-10-08 16:18:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 772. [2021-10-08 16:18:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 769 states have (on average 2.3784135240572173) internal successors, (1829), 771 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1829 transitions. [2021-10-08 16:18:10,678 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1829 transitions. Word has length 94 [2021-10-08 16:18:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:10,678 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 1829 transitions. [2021-10-08 16:18:10,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 1.053763440860215) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1829 transitions. [2021-10-08 16:18:10,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-08 16:18:10,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:10,679 INFO L512 BasicCegarLoop]: trace histogram [91, 1, 1, 1, 1] [2021-10-08 16:18:10,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-08 16:18:10,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:10,880 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:18:10,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash -505752277, now seen corresponding path program 91 times [2021-10-08 16:18:10,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:10,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503319451] [2021-10-08 16:18:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:10,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:14,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:14,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503319451] [2021-10-08 16:18:14,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503319451] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:14,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075978456] [2021-10-08 16:18:14,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:18:14,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:14,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:14,429 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:18:14,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-08 16:18:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:15,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 94 conjunts are in the unsatisfiable core [2021-10-08 16:18:15,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:16,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075978456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:16,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:16,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2021-10-08 16:18:16,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120779829] [2021-10-08 16:18:16,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-10-08 16:18:16,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-10-08 16:18:16,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 16:18:16,036 INFO L87 Difference]: Start difference. First operand 772 states and 1829 transitions. Second operand has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 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 16:18:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:18,839 INFO L93 Difference]: Finished difference Result 1522 states and 3609 transitions. [2021-10-08 16:18:18,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-10-08 16:18:18,840 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 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) Word has length 95 [2021-10-08 16:18:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:18,842 INFO L225 Difference]: With dead ends: 1522 [2021-10-08 16:18:18,842 INFO L226 Difference]: Without dead ends: 1148 [2021-10-08 16:18:18,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3354.4ms TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2021-10-08 16:18:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-10-08 16:18:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 780. [2021-10-08 16:18:18,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 777 states have (on average 2.3783783783783785) internal successors, (1848), 779 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:18,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1848 transitions. [2021-10-08 16:18:18,852 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1848 transitions. Word has length 95 [2021-10-08 16:18:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:18,852 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1848 transitions. [2021-10-08 16:18:18,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 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 16:18:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1848 transitions. [2021-10-08 16:18:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-08 16:18:18,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:18,854 INFO L512 BasicCegarLoop]: trace histogram [92, 1, 1, 1, 1] [2021-10-08 16:18:18,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2021-10-08 16:18:19,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-10-08 16:18:19,055 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:18:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:19,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1501550245, now seen corresponding path program 92 times [2021-10-08 16:18:19,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:19,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259223683] [2021-10-08 16:18:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:19,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:22,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:22,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259223683] [2021-10-08 16:18:22,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259223683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:22,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677430463] [2021-10-08 16:18:22,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:18:22,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:22,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:22,729 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:18:22,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-10-08 16:18:24,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:18:24,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:24,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 95 conjunts are in the unsatisfiable core [2021-10-08 16:18:24,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:24,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677430463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:24,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:24,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2021-10-08 16:18:24,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519726379] [2021-10-08 16:18:24,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-10-08 16:18:24,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:24,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-10-08 16:18:24,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-08 16:18:24,360 INFO L87 Difference]: Start difference. First operand 780 states and 1848 transitions. Second operand has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:27,170 INFO L93 Difference]: Finished difference Result 1538 states and 3647 transitions. [2021-10-08 16:18:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-10-08 16:18:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-10-08 16:18:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:27,172 INFO L225 Difference]: With dead ends: 1538 [2021-10-08 16:18:27,172 INFO L226 Difference]: Without dead ends: 1160 [2021-10-08 16:18:27,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3476.5ms TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-10-08 16:18:27,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-10-08 16:18:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 788. [2021-10-08 16:18:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 785 states have (on average 2.378343949044586) internal successors, (1867), 787 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1867 transitions. [2021-10-08 16:18:27,189 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1867 transitions. Word has length 96 [2021-10-08 16:18:27,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:27,190 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 1867 transitions. [2021-10-08 16:18:27,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1867 transitions. [2021-10-08 16:18:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-08 16:18:27,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:27,192 INFO L512 BasicCegarLoop]: trace histogram [93, 1, 1, 1, 1] [2021-10-08 16:18:27,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-10-08 16:18:27,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-10-08 16:18:27,407 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:18:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash -696581013, now seen corresponding path program 93 times [2021-10-08 16:18:27,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:27,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706843499] [2021-10-08 16:18:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:27,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:31,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:31,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706843499] [2021-10-08 16:18:31,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706843499] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:31,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612893815] [2021-10-08 16:18:31,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:18:31,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:31,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:31,123 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:18:31,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-10-08 16:18:32,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2021-10-08 16:18:32,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:32,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 96 conjunts are in the unsatisfiable core [2021-10-08 16:18:32,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:32,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612893815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:32,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:32,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2021-10-08 16:18:32,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879877022] [2021-10-08 16:18:32,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-10-08 16:18:32,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-10-08 16:18:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-08 16:18:32,888 INFO L87 Difference]: Start difference. First operand 788 states and 1867 transitions. Second operand has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:35,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:35,785 INFO L93 Difference]: Finished difference Result 1554 states and 3685 transitions. [2021-10-08 16:18:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-08 16:18:35,786 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-08 16:18:35,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:35,788 INFO L225 Difference]: With dead ends: 1554 [2021-10-08 16:18:35,788 INFO L226 Difference]: Without dead ends: 1172 [2021-10-08 16:18:35,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3499.5ms TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-10-08 16:18:35,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-10-08 16:18:35,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 796. [2021-10-08 16:18:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 793 states have (on average 2.378310214375788) internal successors, (1886), 795 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1886 transitions. [2021-10-08 16:18:35,799 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1886 transitions. Word has length 97 [2021-10-08 16:18:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:35,799 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1886 transitions. [2021-10-08 16:18:35,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1886 transitions. [2021-10-08 16:18:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-08 16:18:35,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:35,800 INFO L512 BasicCegarLoop]: trace histogram [94, 1, 1, 1, 1] [2021-10-08 16:18:35,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-10-08 16:18:36,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-10-08 16:18:36,001 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:18:36,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash -119173275, now seen corresponding path program 94 times [2021-10-08 16:18:36,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:36,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259777849] [2021-10-08 16:18:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:36,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:39,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:39,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259777849] [2021-10-08 16:18:39,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259777849] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:39,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063388810] [2021-10-08 16:18:39,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:18:39,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:39,807 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:18:39,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-10-08 16:18:41,349 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:18:41,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:41,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 97 conjunts are in the unsatisfiable core [2021-10-08 16:18:41,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:41,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063388810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:41,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:41,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2021-10-08 16:18:41,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140522481] [2021-10-08 16:18:41,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-10-08 16:18:41,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:41,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-10-08 16:18:41,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-08 16:18:41,595 INFO L87 Difference]: Start difference. First operand 796 states and 1886 transitions. Second operand has 98 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:44,365 INFO L93 Difference]: Finished difference Result 1570 states and 3723 transitions. [2021-10-08 16:18:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-10-08 16:18:44,365 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 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 98 [2021-10-08 16:18:44,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:44,367 INFO L225 Difference]: With dead ends: 1570 [2021-10-08 16:18:44,367 INFO L226 Difference]: Without dead ends: 1184 [2021-10-08 16:18:44,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3602.1ms TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2021-10-08 16:18:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-10-08 16:18:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 804. [2021-10-08 16:18:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 801 states have (on average 2.3782771535580522) internal successors, (1905), 803 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1905 transitions. [2021-10-08 16:18:44,378 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1905 transitions. Word has length 98 [2021-10-08 16:18:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:44,378 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1905 transitions. [2021-10-08 16:18:44,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.0515463917525774) internal successors, (102), 97 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1905 transitions. [2021-10-08 16:18:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-08 16:18:44,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:44,380 INFO L512 BasicCegarLoop]: trace histogram [95, 1, 1, 1, 1] [2021-10-08 16:18:44,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-10-08 16:18:44,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:44,581 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:18:44,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash 600597419, now seen corresponding path program 95 times [2021-10-08 16:18:44,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:44,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943245460] [2021-10-08 16:18:44,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:44,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:48,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:48,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943245460] [2021-10-08 16:18:48,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943245460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:48,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039750829] [2021-10-08 16:18:48,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:18:48,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:48,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:48,513 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:18:48,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-10-08 16:18:50,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-08 16:18:50,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:50,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 98 conjunts are in the unsatisfiable core [2021-10-08 16:18:50,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:50,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039750829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:50,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:50,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2021-10-08 16:18:50,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539080732] [2021-10-08 16:18:50,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-10-08 16:18:50,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:50,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-10-08 16:18:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-08 16:18:50,299 INFO L87 Difference]: Start difference. First operand 804 states and 1905 transitions. Second operand has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:18:53,478 INFO L93 Difference]: Finished difference Result 1586 states and 3761 transitions. [2021-10-08 16:18:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-10-08 16:18:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-08 16:18:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:18:53,480 INFO L225 Difference]: With dead ends: 1586 [2021-10-08 16:18:53,480 INFO L226 Difference]: Without dead ends: 1196 [2021-10-08 16:18:53,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3706.5ms TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2021-10-08 16:18:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-10-08 16:18:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 812. [2021-10-08 16:18:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 809 states have (on average 2.3782447466007417) internal successors, (1924), 811 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1924 transitions. [2021-10-08 16:18:53,508 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1924 transitions. Word has length 99 [2021-10-08 16:18:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:18:53,508 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1924 transitions. [2021-10-08 16:18:53,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 1.0510204081632653) internal successors, (103), 98 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:18:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1924 transitions. [2021-10-08 16:18:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-08 16:18:53,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:18:53,510 INFO L512 BasicCegarLoop]: trace histogram [96, 1, 1, 1, 1] [2021-10-08 16:18:53,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-10-08 16:18:53,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-10-08 16:18:53,722 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:18:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:18:53,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1438652453, now seen corresponding path program 96 times [2021-10-08 16:18:53,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:18:53,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565850301] [2021-10-08 16:18:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:18:53,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:18:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:18:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:57,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:18:57,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565850301] [2021-10-08 16:18:57,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565850301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:57,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524493116] [2021-10-08 16:18:57,667 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:18:57,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:18:57,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:18:57,669 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:18:57,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-10-08 16:18:59,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-10-08 16:18:59,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:18:59,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 99 conjunts are in the unsatisfiable core [2021-10-08 16:18:59,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:18:59,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:18:59,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524493116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:18:59,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:18:59,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2021-10-08 16:18:59,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276403128] [2021-10-08 16:18:59,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-10-08 16:18:59,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:18:59,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-10-08 16:18:59,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 16:18:59,525 INFO L87 Difference]: Start difference. First operand 812 states and 1924 transitions. Second operand has 100 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:02,582 INFO L93 Difference]: Finished difference Result 1602 states and 3799 transitions. [2021-10-08 16:19:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-10-08 16:19:02,582 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 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 100 [2021-10-08 16:19:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:02,584 INFO L225 Difference]: With dead ends: 1602 [2021-10-08 16:19:02,584 INFO L226 Difference]: Without dead ends: 1208 [2021-10-08 16:19:02,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3740.5ms TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2021-10-08 16:19:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-10-08 16:19:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 820. [2021-10-08 16:19:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 817 states have (on average 2.3782129742962055) internal successors, (1943), 819 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:02,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1943 transitions. [2021-10-08 16:19:02,600 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1943 transitions. Word has length 100 [2021-10-08 16:19:02,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:02,600 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 1943 transitions. [2021-10-08 16:19:02,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1943 transitions. [2021-10-08 16:19:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-08 16:19:02,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:02,603 INFO L512 BasicCegarLoop]: trace histogram [97, 1, 1, 1, 1] [2021-10-08 16:19:02,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-10-08 16:19:02,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:02,818 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:19:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:02,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1648554731, now seen corresponding path program 97 times [2021-10-08 16:19:02,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:02,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717012463] [2021-10-08 16:19:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:02,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:06,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:06,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717012463] [2021-10-08 16:19:06,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717012463] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:06,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133274209] [2021-10-08 16:19:06,781 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:19:06,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:06,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:06,783 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:19:06,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-10-08 16:19:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:08,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 930 conjuncts, 100 conjunts are in the unsatisfiable core [2021-10-08 16:19:08,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:08,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133274209] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:08,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:08,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2021-10-08 16:19:08,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662715470] [2021-10-08 16:19:08,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-10-08 16:19:08,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-10-08 16:19:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:19:08,617 INFO L87 Difference]: Start difference. First operand 820 states and 1943 transitions. Second operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:11,843 INFO L93 Difference]: Finished difference Result 1618 states and 3837 transitions. [2021-10-08 16:19:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-10-08 16:19:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 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 101 [2021-10-08 16:19:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:11,846 INFO L225 Difference]: With dead ends: 1618 [2021-10-08 16:19:11,846 INFO L226 Difference]: Without dead ends: 1220 [2021-10-08 16:19:11,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3750.0ms TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2021-10-08 16:19:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-10-08 16:19:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 828. [2021-10-08 16:19:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 825 states have (on average 2.3781818181818184) internal successors, (1962), 827 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1962 transitions. [2021-10-08 16:19:11,857 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1962 transitions. Word has length 101 [2021-10-08 16:19:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:11,857 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1962 transitions. [2021-10-08 16:19:11,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:11,857 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1962 transitions. [2021-10-08 16:19:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-08 16:19:11,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:11,858 INFO L512 BasicCegarLoop]: trace histogram [98, 1, 1, 1, 1] [2021-10-08 16:19:11,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2021-10-08 16:19:12,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:12,059 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:19:12,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:12,060 INFO L82 PathProgramCache]: Analyzing trace with hash -434409243, now seen corresponding path program 98 times [2021-10-08 16:19:12,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:12,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836764419] [2021-10-08 16:19:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:12,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:16,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:16,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836764419] [2021-10-08 16:19:16,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836764419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:16,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460225742] [2021-10-08 16:19:16,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:19:16,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:16,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:16,242 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:19:16,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-10-08 16:19:17,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:19:17,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 101 conjunts are in the unsatisfiable core [2021-10-08 16:19:17,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:18,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460225742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:18,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:18,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2021-10-08 16:19:18,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027067670] [2021-10-08 16:19:18,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-10-08 16:19:18,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:18,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-10-08 16:19:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 16:19:18,067 INFO L87 Difference]: Start difference. First operand 828 states and 1962 transitions. Second operand has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:21,578 INFO L93 Difference]: Finished difference Result 1634 states and 3875 transitions. [2021-10-08 16:19:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-10-08 16:19:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-08 16:19:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:21,582 INFO L225 Difference]: With dead ends: 1634 [2021-10-08 16:19:21,582 INFO L226 Difference]: Without dead ends: 1232 [2021-10-08 16:19:21,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 3938.7ms TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 16:19:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-10-08 16:19:21,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 836. [2021-10-08 16:19:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 833 states have (on average 2.3781512605042017) internal successors, (1981), 835 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1981 transitions. [2021-10-08 16:19:21,598 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1981 transitions. Word has length 102 [2021-10-08 16:19:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:21,598 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1981 transitions. [2021-10-08 16:19:21,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 1.0495049504950495) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1981 transitions. [2021-10-08 16:19:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-08 16:19:21,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:21,600 INFO L512 BasicCegarLoop]: trace histogram [99, 1, 1, 1, 1] [2021-10-08 16:19:21,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-10-08 16:19:21,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:21,815 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:19:21,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:21,815 INFO L82 PathProgramCache]: Analyzing trace with hash -581782997, now seen corresponding path program 99 times [2021-10-08 16:19:21,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:21,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494192047] [2021-10-08 16:19:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:21,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:26,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:26,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494192047] [2021-10-08 16:19:26,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494192047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:26,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664140804] [2021-10-08 16:19:26,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:19:26,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:26,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:26,033 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:19:26,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-08 16:19:27,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2021-10-08 16:19:27,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:27,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 102 conjunts are in the unsatisfiable core [2021-10-08 16:19:27,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:28,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664140804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:28,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:28,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2021-10-08 16:19:28,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628199208] [2021-10-08 16:19:28,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-10-08 16:19:28,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:28,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-10-08 16:19:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-08 16:19:28,034 INFO L87 Difference]: Start difference. First operand 836 states and 1981 transitions. Second operand has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 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 16:19:31,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:31,413 INFO L93 Difference]: Finished difference Result 1650 states and 3913 transitions. [2021-10-08 16:19:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-10-08 16:19:31,413 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 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) Word has length 103 [2021-10-08 16:19:31,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:31,415 INFO L225 Difference]: With dead ends: 1650 [2021-10-08 16:19:31,415 INFO L226 Difference]: Without dead ends: 1244 [2021-10-08 16:19:31,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3991.5ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-10-08 16:19:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2021-10-08 16:19:31,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 844. [2021-10-08 16:19:31,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 841 states have (on average 2.3781212841854935) internal successors, (2000), 843 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2000 transitions. [2021-10-08 16:19:31,427 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2000 transitions. Word has length 103 [2021-10-08 16:19:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:31,427 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2000 transitions. [2021-10-08 16:19:31,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 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 16:19:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2000 transitions. [2021-10-08 16:19:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-08 16:19:31,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:31,429 INFO L512 BasicCegarLoop]: trace histogram [100, 1, 1, 1, 1] [2021-10-08 16:19:31,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-10-08 16:19:31,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:31,629 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:19:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:31,630 INFO L82 PathProgramCache]: Analyzing trace with hash -855402075, now seen corresponding path program 100 times [2021-10-08 16:19:31,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:31,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283682856] [2021-10-08 16:19:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:31,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:35,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:35,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283682856] [2021-10-08 16:19:35,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283682856] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:35,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915418207] [2021-10-08 16:19:35,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:19:35,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:35,934 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:19:35,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-10-08 16:19:37,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:19:37,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:37,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 103 conjunts are in the unsatisfiable core [2021-10-08 16:19:37,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:37,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915418207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:37,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:37,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2021-10-08 16:19:37,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794331379] [2021-10-08 16:19:37,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-08 16:19:37,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-08 16:19:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-08 16:19:37,836 INFO L87 Difference]: Start difference. First operand 844 states and 2000 transitions. Second operand has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:41,454 INFO L93 Difference]: Finished difference Result 1666 states and 3951 transitions. [2021-10-08 16:19:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-08 16:19:41,455 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 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 104 [2021-10-08 16:19:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:41,457 INFO L225 Difference]: With dead ends: 1666 [2021-10-08 16:19:41,457 INFO L226 Difference]: Without dead ends: 1256 [2021-10-08 16:19:41,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4083.4ms TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2021-10-08 16:19:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2021-10-08 16:19:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 852. [2021-10-08 16:19:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 849 states have (on average 2.3780918727915195) internal successors, (2019), 851 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 2019 transitions. [2021-10-08 16:19:41,468 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 2019 transitions. Word has length 104 [2021-10-08 16:19:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:41,468 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 2019 transitions. [2021-10-08 16:19:41,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 2019 transitions. [2021-10-08 16:19:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-08 16:19:41,469 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:41,469 INFO L512 BasicCegarLoop]: trace histogram [101, 1, 1, 1, 1] [2021-10-08 16:19:41,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-10-08 16:19:41,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-10-08 16:19:41,670 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:19:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:41,671 INFO L82 PathProgramCache]: Analyzing trace with hash -747658901, now seen corresponding path program 101 times [2021-10-08 16:19:41,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:41,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143775015] [2021-10-08 16:19:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:41,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:46,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:46,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143775015] [2021-10-08 16:19:46,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143775015] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:46,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332211597] [2021-10-08 16:19:46,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:19:46,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:46,059 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:19:46,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-10-08 16:19:47,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2021-10-08 16:19:47,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:47,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-08 16:19:47,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:48,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332211597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:48,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:48,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2021-10-08 16:19:48,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832907649] [2021-10-08 16:19:48,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-10-08 16:19:48,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:48,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-10-08 16:19:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-08 16:19:48,043 INFO L87 Difference]: Start difference. First operand 852 states and 2019 transitions. Second operand has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:51,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:19:51,965 INFO L93 Difference]: Finished difference Result 1682 states and 3989 transitions. [2021-10-08 16:19:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-10-08 16:19:51,965 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 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 105 [2021-10-08 16:19:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:19:51,968 INFO L225 Difference]: With dead ends: 1682 [2021-10-08 16:19:51,968 INFO L226 Difference]: Without dead ends: 1268 [2021-10-08 16:19:51,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 4149.5ms TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2021-10-08 16:19:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2021-10-08 16:19:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 860. [2021-10-08 16:19:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 857 states have (on average 2.37806301050175) internal successors, (2038), 859 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 2038 transitions. [2021-10-08 16:19:51,979 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 2038 transitions. Word has length 105 [2021-10-08 16:19:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:19:51,979 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 2038 transitions. [2021-10-08 16:19:51,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.0480769230769231) internal successors, (109), 104 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:19:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 2038 transitions. [2021-10-08 16:19:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-08 16:19:51,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:19:51,981 INFO L512 BasicCegarLoop]: trace histogram [102, 1, 1, 1, 1] [2021-10-08 16:19:52,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2021-10-08 16:19:52,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-08 16:19:52,182 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:19:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:19:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1702587803, now seen corresponding path program 102 times [2021-10-08 16:19:52,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:19:52,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851900047] [2021-10-08 16:19:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:19:52,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:19:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:19:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:56,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:19:56,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851900047] [2021-10-08 16:19:56,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851900047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:56,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674870785] [2021-10-08 16:19:56,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:19:56,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:19:56,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:19:56,621 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:19:56,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-10-08 16:19:58,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2021-10-08 16:19:58,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:19:58,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 105 conjunts are in the unsatisfiable core [2021-10-08 16:19:58,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:19:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:19:58,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674870785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:19:58,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:19:58,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2021-10-08 16:19:58,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582796133] [2021-10-08 16:19:58,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-10-08 16:19:58,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:19:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-10-08 16:19:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-08 16:19:58,817 INFO L87 Difference]: Start difference. First operand 860 states and 2038 transitions. Second operand has 106 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:02,858 INFO L93 Difference]: Finished difference Result 1698 states and 4027 transitions. [2021-10-08 16:20:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-10-08 16:20:02,859 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 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 106 [2021-10-08 16:20:02,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:02,861 INFO L225 Difference]: With dead ends: 1698 [2021-10-08 16:20:02,861 INFO L226 Difference]: Without dead ends: 1280 [2021-10-08 16:20:02,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 4213.1ms TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2021-10-08 16:20:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2021-10-08 16:20:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 868. [2021-10-08 16:20:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 865 states have (on average 2.378034682080925) internal successors, (2057), 867 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 2057 transitions. [2021-10-08 16:20:02,875 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 2057 transitions. Word has length 106 [2021-10-08 16:20:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:02,875 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 2057 transitions. [2021-10-08 16:20:02,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 2057 transitions. [2021-10-08 16:20:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-08 16:20:02,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:02,877 INFO L512 BasicCegarLoop]: trace histogram [103, 1, 1, 1, 1] [2021-10-08 16:20:02,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-10-08 16:20:03,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-10-08 16:20:03,078 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:20:03,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:03,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1240612693, now seen corresponding path program 103 times [2021-10-08 16:20:03,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:03,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545197764] [2021-10-08 16:20:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:03,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:07,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:07,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545197764] [2021-10-08 16:20:07,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545197764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:07,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609129772] [2021-10-08 16:20:07,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:20:07,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:07,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:07,831 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:20:07,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-10-08 16:20:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:09,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 106 conjunts are in the unsatisfiable core [2021-10-08 16:20:09,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:10,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609129772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:10,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:10,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2021-10-08 16:20:10,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940944787] [2021-10-08 16:20:10,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-10-08 16:20:10,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:10,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-10-08 16:20:10,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-08 16:20:10,023 INFO L87 Difference]: Start difference. First operand 868 states and 2057 transitions. Second operand has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:13,988 INFO L93 Difference]: Finished difference Result 1714 states and 4065 transitions. [2021-10-08 16:20:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-10-08 16:20:13,988 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 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 107 [2021-10-08 16:20:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:13,990 INFO L225 Difference]: With dead ends: 1714 [2021-10-08 16:20:13,991 INFO L226 Difference]: Without dead ends: 1292 [2021-10-08 16:20:13,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 4523.9ms TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2021-10-08 16:20:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2021-10-08 16:20:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 876. [2021-10-08 16:20:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 873 states have (on average 2.3780068728522337) internal successors, (2076), 875 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2076 transitions. [2021-10-08 16:20:14,004 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2076 transitions. Word has length 107 [2021-10-08 16:20:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:14,004 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2076 transitions. [2021-10-08 16:20:14,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 106 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2076 transitions. [2021-10-08 16:20:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-08 16:20:14,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:14,006 INFO L512 BasicCegarLoop]: trace histogram [104, 1, 1, 1, 1] [2021-10-08 16:20:14,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-10-08 16:20:14,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-10-08 16:20:14,207 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:20:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:14,207 INFO L82 PathProgramCache]: Analyzing trace with hash 195713829, now seen corresponding path program 104 times [2021-10-08 16:20:14,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:14,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484441226] [2021-10-08 16:20:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:14,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:19,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:19,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484441226] [2021-10-08 16:20:19,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484441226] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:19,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180560368] [2021-10-08 16:20:19,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:20:19,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:19,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:19,112 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:20:19,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-10-08 16:20:21,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:20:21,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:21,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 107 conjunts are in the unsatisfiable core [2021-10-08 16:20:21,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:21,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180560368] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:21,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:21,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2021-10-08 16:20:21,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110067924] [2021-10-08 16:20:21,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-10-08 16:20:21,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-10-08 16:20:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-08 16:20:21,294 INFO L87 Difference]: Start difference. First operand 876 states and 2076 transitions. Second operand has 108 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:25,614 INFO L93 Difference]: Finished difference Result 1730 states and 4103 transitions. [2021-10-08 16:20:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-10-08 16:20:25,614 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 0 states have call successors, (0), 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 108 [2021-10-08 16:20:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:25,616 INFO L225 Difference]: With dead ends: 1730 [2021-10-08 16:20:25,617 INFO L226 Difference]: Without dead ends: 1304 [2021-10-08 16:20:25,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 4666.3ms TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2021-10-08 16:20:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-10-08 16:20:25,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 884. [2021-10-08 16:20:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 881 states have (on average 2.3779795686719636) internal successors, (2095), 883 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 2095 transitions. [2021-10-08 16:20:25,636 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 2095 transitions. Word has length 108 [2021-10-08 16:20:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:25,636 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 2095 transitions. [2021-10-08 16:20:25,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 2095 transitions. [2021-10-08 16:20:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-08 16:20:25,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:25,638 INFO L512 BasicCegarLoop]: trace histogram [105, 1, 1, 1, 1] [2021-10-08 16:20:25,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-10-08 16:20:25,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-10-08 16:20:25,852 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:20:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:25,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1772163051, now seen corresponding path program 105 times [2021-10-08 16:20:25,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:25,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965491773] [2021-10-08 16:20:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:25,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:30,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:30,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965491773] [2021-10-08 16:20:30,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965491773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:30,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215931044] [2021-10-08 16:20:30,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:20:30,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:30,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:30,879 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:20:30,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-10-08 16:20:32,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-10-08 16:20:32,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:32,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 108 conjunts are in the unsatisfiable core [2021-10-08 16:20:32,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:33,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215931044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:33,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:33,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2021-10-08 16:20:33,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176905086] [2021-10-08 16:20:33,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-10-08 16:20:33,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:33,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-10-08 16:20:33,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-08 16:20:33,224 INFO L87 Difference]: Start difference. First operand 884 states and 2095 transitions. Second operand has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:37,482 INFO L93 Difference]: Finished difference Result 1746 states and 4141 transitions. [2021-10-08 16:20:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-10-08 16:20:37,482 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 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 109 [2021-10-08 16:20:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:37,485 INFO L225 Difference]: With dead ends: 1746 [2021-10-08 16:20:37,485 INFO L226 Difference]: Without dead ends: 1316 [2021-10-08 16:20:37,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4795.2ms TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2021-10-08 16:20:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-10-08 16:20:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 892. [2021-10-08 16:20:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 889 states have (on average 2.377952755905512) internal successors, (2114), 891 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 2114 transitions. [2021-10-08 16:20:37,498 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 2114 transitions. Word has length 109 [2021-10-08 16:20:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:37,498 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 2114 transitions. [2021-10-08 16:20:37,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:37,498 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 2114 transitions. [2021-10-08 16:20:37,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-08 16:20:37,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:37,500 INFO L512 BasicCegarLoop]: trace histogram [106, 1, 1, 1, 1] [2021-10-08 16:20:37,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-10-08 16:20:37,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,111 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:37,700 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:20:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash -897518619, now seen corresponding path program 106 times [2021-10-08 16:20:37,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:37,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201234988] [2021-10-08 16:20:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:37,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:42,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:42,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201234988] [2021-10-08 16:20:42,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201234988] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:42,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993117103] [2021-10-08 16:20:42,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:20:42,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:42,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:42,754 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:20:42,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-08 16:20:44,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:20:44,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:44,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 109 conjunts are in the unsatisfiable core [2021-10-08 16:20:44,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:44,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993117103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:44,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:44,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2021-10-08 16:20:44,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3261849] [2021-10-08 16:20:44,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-10-08 16:20:44,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:44,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-10-08 16:20:44,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-08 16:20:44,985 INFO L87 Difference]: Start difference. First operand 892 states and 2114 transitions. Second operand has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:20:49,589 INFO L93 Difference]: Finished difference Result 1762 states and 4179 transitions. [2021-10-08 16:20:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-10-08 16:20:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 0 states have call successors, (0), 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 110 [2021-10-08 16:20:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:20:49,592 INFO L225 Difference]: With dead ends: 1762 [2021-10-08 16:20:49,592 INFO L226 Difference]: Without dead ends: 1328 [2021-10-08 16:20:49,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4822.9ms TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2021-10-08 16:20:49,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-10-08 16:20:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 900. [2021-10-08 16:20:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 897 states have (on average 2.3779264214046822) internal successors, (2133), 899 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 2133 transitions. [2021-10-08 16:20:49,605 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 2133 transitions. Word has length 110 [2021-10-08 16:20:49,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:20:49,605 INFO L470 AbstractCegarLoop]: Abstraction has 900 states and 2133 transitions. [2021-10-08 16:20:49,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 1.0458715596330275) internal successors, (114), 109 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:20:49,605 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 2133 transitions. [2021-10-08 16:20:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-08 16:20:49,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:20:49,606 INFO L512 BasicCegarLoop]: trace histogram [107, 1, 1, 1, 1] [2021-10-08 16:20:49,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-08 16:20:49,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-10-08 16:20:49,807 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:20:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:20:49,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2053271765, now seen corresponding path program 107 times [2021-10-08 16:20:49,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:20:49,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626997512] [2021-10-08 16:20:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:20:49,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:20:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:20:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:54,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:20:54,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626997512] [2021-10-08 16:20:54,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626997512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:54,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781435455] [2021-10-08 16:20:54,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:20:54,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:20:54,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:20:54,997 INFO L229 MonitoredProcess]: Starting monitored process 113 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 16:20:54,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-10-08 16:20:57,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2021-10-08 16:20:57,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:20:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 110 conjunts are in the unsatisfiable core [2021-10-08 16:20:57,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:20:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:20:57,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781435455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:20:57,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:20:57,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 109 [2021-10-08 16:20:57,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194259245] [2021-10-08 16:20:57,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-10-08 16:20:57,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:20:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-10-08 16:20:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-08 16:20:57,394 INFO L87 Difference]: Start difference. First operand 900 states and 2133 transitions. Second operand has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:02,008 INFO L93 Difference]: Finished difference Result 1778 states and 4217 transitions. [2021-10-08 16:21:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-10-08 16:21:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 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 111 [2021-10-08 16:21:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:02,011 INFO L225 Difference]: With dead ends: 1778 [2021-10-08 16:21:02,011 INFO L226 Difference]: Without dead ends: 1340 [2021-10-08 16:21:02,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4933.0ms TimeCoverageRelationStatistics Valid=6105, Invalid=6105, Unknown=0, NotChecked=0, Total=12210 [2021-10-08 16:21:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-10-08 16:21:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 908. [2021-10-08 16:21:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 905 states have (on average 2.377900552486188) internal successors, (2152), 907 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 2152 transitions. [2021-10-08 16:21:02,024 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 2152 transitions. Word has length 111 [2021-10-08 16:21:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:02,024 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 2152 transitions. [2021-10-08 16:21:02,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 110 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 2152 transitions. [2021-10-08 16:21:02,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-08 16:21:02,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:02,026 INFO L512 BasicCegarLoop]: trace histogram [108, 1, 1, 1, 1] [2021-10-08 16:21:02,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-10-08 16:21:02,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-10-08 16:21:02,226 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:21:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:02,227 INFO L82 PathProgramCache]: Analyzing trace with hash 773086373, now seen corresponding path program 108 times [2021-10-08 16:21:02,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:02,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211224319] [2021-10-08 16:21:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:02,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:07,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:07,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211224319] [2021-10-08 16:21:07,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211224319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:07,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560547673] [2021-10-08 16:21:07,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:21:07,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:07,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:07,337 INFO L229 MonitoredProcess]: Starting monitored process 114 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 16:21:07,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-10-08 16:21:09,460 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-10-08 16:21:09,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:21:09,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 111 conjunts are in the unsatisfiable core [2021-10-08 16:21:09,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:09,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560547673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:09,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:09,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 110 [2021-10-08 16:21:09,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254606286] [2021-10-08 16:21:09,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-10-08 16:21:09,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-10-08 16:21:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-08 16:21:09,748 INFO L87 Difference]: Start difference. First operand 908 states and 2152 transitions. Second operand has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:14,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:14,567 INFO L93 Difference]: Finished difference Result 1794 states and 4255 transitions. [2021-10-08 16:21:14,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-10-08 16:21:14,568 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 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 112 [2021-10-08 16:21:14,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:14,570 INFO L225 Difference]: With dead ends: 1794 [2021-10-08 16:21:14,570 INFO L226 Difference]: Without dead ends: 1352 [2021-10-08 16:21:14,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 4868.1ms TimeCoverageRelationStatistics Valid=6216, Invalid=6216, Unknown=0, NotChecked=0, Total=12432 [2021-10-08 16:21:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-08 16:21:14,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 916. [2021-10-08 16:21:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 913 states have (on average 2.3778751369112814) internal successors, (2171), 915 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 2171 transitions. [2021-10-08 16:21:14,583 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 2171 transitions. Word has length 112 [2021-10-08 16:21:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:14,583 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 2171 transitions. [2021-10-08 16:21:14,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 1.045045045045045) internal successors, (116), 111 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 2171 transitions. [2021-10-08 16:21:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-08 16:21:14,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:14,585 INFO L512 BasicCegarLoop]: trace histogram [109, 1, 1, 1, 1] [2021-10-08 16:21:14,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2021-10-08 16:21:14,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:14,786 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:21:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:14,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1804124565, now seen corresponding path program 109 times [2021-10-08 16:21:14,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:14,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307201773] [2021-10-08 16:21:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:14,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:20,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:20,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307201773] [2021-10-08 16:21:20,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307201773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:20,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651016286] [2021-10-08 16:21:20,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:21:20,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:20,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:20,191 INFO L229 MonitoredProcess]: Starting monitored process 115 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 16:21:20,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-10-08 16:21:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:22,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 112 conjunts are in the unsatisfiable core [2021-10-08 16:21:22,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:22,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651016286] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:22,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:22,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 111 [2021-10-08 16:21:22,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012428264] [2021-10-08 16:21:22,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-10-08 16:21:22,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:22,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-10-08 16:21:22,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-08 16:21:22,524 INFO L87 Difference]: Start difference. First operand 916 states and 2171 transitions. Second operand has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:27,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:27,259 INFO L93 Difference]: Finished difference Result 1810 states and 4293 transitions. [2021-10-08 16:21:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-08 16:21:27,260 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 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 113 [2021-10-08 16:21:27,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:27,262 INFO L225 Difference]: With dead ends: 1810 [2021-10-08 16:21:27,262 INFO L226 Difference]: Without dead ends: 1364 [2021-10-08 16:21:27,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 5156.7ms TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2021-10-08 16:21:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-10-08 16:21:27,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 924. [2021-10-08 16:21:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 921 states have (on average 2.3778501628664497) internal successors, (2190), 923 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2190 transitions. [2021-10-08 16:21:27,275 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2190 transitions. Word has length 113 [2021-10-08 16:21:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:27,276 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2190 transitions. [2021-10-08 16:21:27,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 1.0446428571428572) internal successors, (117), 112 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2190 transitions. [2021-10-08 16:21:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-10-08 16:21:27,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:27,277 INFO L512 BasicCegarLoop]: trace histogram [110, 1, 1, 1, 1] [2021-10-08 16:21:27,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-10-08 16:21:27,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:27,478 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:21:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:27,479 INFO L82 PathProgramCache]: Analyzing trace with hash -93285019, now seen corresponding path program 110 times [2021-10-08 16:21:27,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:27,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972501954] [2021-10-08 16:21:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:27,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:32,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:32,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972501954] [2021-10-08 16:21:32,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972501954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:32,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259582159] [2021-10-08 16:21:32,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:21:32,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:32,955 INFO L229 MonitoredProcess]: Starting monitored process 116 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 16:21:32,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-10-08 16:21:35,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:21:35,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:21:35,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 113 conjunts are in the unsatisfiable core [2021-10-08 16:21:35,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:35,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259582159] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:35,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:35,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 112 [2021-10-08 16:21:35,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829390794] [2021-10-08 16:21:35,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-08 16:21:35,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-08 16:21:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-08 16:21:35,348 INFO L87 Difference]: Start difference. First operand 924 states and 2190 transitions. Second operand has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:40,238 INFO L93 Difference]: Finished difference Result 1826 states and 4331 transitions. [2021-10-08 16:21:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-10-08 16:21:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 0 states have call successors, (0), 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 114 [2021-10-08 16:21:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:40,240 INFO L225 Difference]: With dead ends: 1826 [2021-10-08 16:21:40,240 INFO L226 Difference]: Without dead ends: 1376 [2021-10-08 16:21:40,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 5230.8ms TimeCoverageRelationStatistics Valid=6441, Invalid=6441, Unknown=0, NotChecked=0, Total=12882 [2021-10-08 16:21:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-10-08 16:21:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 932. [2021-10-08 16:21:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 929 states have (on average 2.3778256189451024) internal successors, (2209), 931 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2209 transitions. [2021-10-08 16:21:40,267 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2209 transitions. Word has length 114 [2021-10-08 16:21:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:40,267 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2209 transitions. [2021-10-08 16:21:40,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 1.0442477876106195) internal successors, (118), 113 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2209 transitions. [2021-10-08 16:21:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-08 16:21:40,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:40,269 INFO L512 BasicCegarLoop]: trace histogram [111, 1, 1, 1, 1] [2021-10-08 16:21:40,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-10-08 16:21:40,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2021-10-08 16:21:40,474 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:21:40,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:40,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1403133355, now seen corresponding path program 111 times [2021-10-08 16:21:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:40,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157699367] [2021-10-08 16:21:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:40,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:45,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:45,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157699367] [2021-10-08 16:21:45,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157699367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:45,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846015476] [2021-10-08 16:21:45,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:21:45,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:45,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:45,999 INFO L229 MonitoredProcess]: Starting monitored process 117 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 16:21:46,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-10-08 16:21:48,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2021-10-08 16:21:48,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:21:48,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 114 conjunts are in the unsatisfiable core [2021-10-08 16:21:48,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:21:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:48,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846015476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:48,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:21:48,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 113 [2021-10-08 16:21:48,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415729857] [2021-10-08 16:21:48,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-10-08 16:21:48,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:21:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-10-08 16:21:48,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-08 16:21:48,570 INFO L87 Difference]: Start difference. First operand 932 states and 2209 transitions. Second operand has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:21:53,507 INFO L93 Difference]: Finished difference Result 1842 states and 4369 transitions. [2021-10-08 16:21:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-10-08 16:21:53,507 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 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 115 [2021-10-08 16:21:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:21:53,510 INFO L225 Difference]: With dead ends: 1842 [2021-10-08 16:21:53,510 INFO L226 Difference]: Without dead ends: 1388 [2021-10-08 16:21:53,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 5272.4ms TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2021-10-08 16:21:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-10-08 16:21:53,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 940. [2021-10-08 16:21:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 937 states have (on average 2.377801494130203) internal successors, (2228), 939 states have internal predecessors, (2228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 2228 transitions. [2021-10-08 16:21:53,522 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 2228 transitions. Word has length 115 [2021-10-08 16:21:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:21:53,523 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 2228 transitions. [2021-10-08 16:21:53,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 1.043859649122807) internal successors, (119), 114 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:21:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 2228 transitions. [2021-10-08 16:21:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-10-08 16:21:53,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:21:53,524 INFO L512 BasicCegarLoop]: trace histogram [112, 1, 1, 1, 1] [2021-10-08 16:21:53,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-10-08 16:21:53,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-10-08 16:21:53,725 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:21:53,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:21:53,726 INFO L82 PathProgramCache]: Analyzing trace with hash 547462693, now seen corresponding path program 112 times [2021-10-08 16:21:53,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:21:53,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191623049] [2021-10-08 16:21:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:21:53,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:21:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:21:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:21:59,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:21:59,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191623049] [2021-10-08 16:21:59,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191623049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:21:59,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552950327] [2021-10-08 16:21:59,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:21:59,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:21:59,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:21:59,439 INFO L229 MonitoredProcess]: Starting monitored process 118 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 16:21:59,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-08 16:22:01,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:22:01,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:22:01,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 115 conjunts are in the unsatisfiable core [2021-10-08 16:22:01,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:01,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552950327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:01,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:01,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 114 [2021-10-08 16:22:01,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859329408] [2021-10-08 16:22:01,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-10-08 16:22:01,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-10-08 16:22:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-08 16:22:01,948 INFO L87 Difference]: Start difference. First operand 940 states and 2228 transitions. Second operand has 116 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:07,022 INFO L93 Difference]: Finished difference Result 1858 states and 4407 transitions. [2021-10-08 16:22:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-10-08 16:22:07,023 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 0 states have call successors, (0), 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 116 [2021-10-08 16:22:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:07,025 INFO L225 Difference]: With dead ends: 1858 [2021-10-08 16:22:07,025 INFO L226 Difference]: Without dead ends: 1400 [2021-10-08 16:22:07,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 5429.4ms TimeCoverageRelationStatistics Valid=6670, Invalid=6670, Unknown=0, NotChecked=0, Total=13340 [2021-10-08 16:22:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-10-08 16:22:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 948. [2021-10-08 16:22:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 945 states have (on average 2.3777777777777778) internal successors, (2247), 947 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2247 transitions. [2021-10-08 16:22:07,037 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2247 transitions. Word has length 116 [2021-10-08 16:22:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:07,037 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 2247 transitions. [2021-10-08 16:22:07,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 115 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2247 transitions. [2021-10-08 16:22:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-08 16:22:07,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:07,039 INFO L512 BasicCegarLoop]: trace histogram [113, 1, 1, 1, 1] [2021-10-08 16:22:07,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-08 16:22:07,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,118 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:07,240 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:22:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:07,241 INFO L82 PathProgramCache]: Analyzing trace with hash -208524053, now seen corresponding path program 113 times [2021-10-08 16:22:07,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:07,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600466285] [2021-10-08 16:22:07,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:07,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:12,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:12,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600466285] [2021-10-08 16:22:12,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600466285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:12,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042821897] [2021-10-08 16:22:12,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:22:12,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:12,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:12,846 INFO L229 MonitoredProcess]: Starting monitored process 119 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 16:22:12,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-10-08 16:22:15,080 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-10-08 16:22:15,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:22:15,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 116 conjunts are in the unsatisfiable core [2021-10-08 16:22:15,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:15,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042821897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:15,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:15,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 115 [2021-10-08 16:22:15,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382352443] [2021-10-08 16:22:15,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-10-08 16:22:15,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:15,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-10-08 16:22:15,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-08 16:22:15,413 INFO L87 Difference]: Start difference. First operand 948 states and 2247 transitions. Second operand has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:20,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:20,767 INFO L93 Difference]: Finished difference Result 1874 states and 4445 transitions. [2021-10-08 16:22:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-10-08 16:22:20,768 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 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 117 [2021-10-08 16:22:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:20,770 INFO L225 Difference]: With dead ends: 1874 [2021-10-08 16:22:20,770 INFO L226 Difference]: Without dead ends: 1412 [2021-10-08 16:22:20,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 5353.0ms TimeCoverageRelationStatistics Valid=6786, Invalid=6786, Unknown=0, NotChecked=0, Total=13572 [2021-10-08 16:22:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2021-10-08 16:22:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 956. [2021-10-08 16:22:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 953 states have (on average 2.377754459601259) internal successors, (2266), 955 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 2266 transitions. [2021-10-08 16:22:20,783 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 2266 transitions. Word has length 117 [2021-10-08 16:22:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:20,783 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 2266 transitions. [2021-10-08 16:22:20,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 2266 transitions. [2021-10-08 16:22:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-08 16:22:20,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:20,785 INFO L512 BasicCegarLoop]: trace histogram [114, 1, 1, 1, 1] [2021-10-08 16:22:20,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-10-08 16:22:20,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-10-08 16:22:20,990 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:22:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2125690597, now seen corresponding path program 114 times [2021-10-08 16:22:20,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:20,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775752314] [2021-10-08 16:22:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:20,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:26,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:26,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775752314] [2021-10-08 16:22:26,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775752314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:26,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979698468] [2021-10-08 16:22:26,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:22:26,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:26,975 INFO L229 MonitoredProcess]: Starting monitored process 120 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 16:22:26,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-10-08 16:22:29,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2021-10-08 16:22:29,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:22:29,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 117 conjunts are in the unsatisfiable core [2021-10-08 16:22:29,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:29,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979698468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:29,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:29,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 116 [2021-10-08 16:22:29,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964270821] [2021-10-08 16:22:29,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-10-08 16:22:29,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:29,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-10-08 16:22:29,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-08 16:22:29,652 INFO L87 Difference]: Start difference. First operand 956 states and 2266 transitions. Second operand has 118 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:35,284 INFO L93 Difference]: Finished difference Result 1890 states and 4483 transitions. [2021-10-08 16:22:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-10-08 16:22:35,285 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 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 118 [2021-10-08 16:22:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:35,287 INFO L225 Difference]: With dead ends: 1890 [2021-10-08 16:22:35,287 INFO L226 Difference]: Without dead ends: 1424 [2021-10-08 16:22:35,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 5680.3ms TimeCoverageRelationStatistics Valid=6903, Invalid=6903, Unknown=0, NotChecked=0, Total=13806 [2021-10-08 16:22:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-10-08 16:22:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 964. [2021-10-08 16:22:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 961 states have (on average 2.3777315296566077) internal successors, (2285), 963 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 2285 transitions. [2021-10-08 16:22:35,300 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 2285 transitions. Word has length 118 [2021-10-08 16:22:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:35,300 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 2285 transitions. [2021-10-08 16:22:35,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 1.0427350427350428) internal successors, (122), 117 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 2285 transitions. [2021-10-08 16:22:35,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-08 16:22:35,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:35,302 INFO L512 BasicCegarLoop]: trace histogram [115, 1, 1, 1, 1] [2021-10-08 16:22:35,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-10-08 16:22:35,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-10-08 16:22:35,515 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:22:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:35,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1471900715, now seen corresponding path program 115 times [2021-10-08 16:22:35,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:35,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023242145] [2021-10-08 16:22:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:35,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:41,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:41,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023242145] [2021-10-08 16:22:41,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023242145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:41,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899297925] [2021-10-08 16:22:41,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:22:41,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:41,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:41,521 INFO L229 MonitoredProcess]: Starting monitored process 121 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 16:22:41,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-10-08 16:22:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:43,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 118 conjunts are in the unsatisfiable core [2021-10-08 16:22:43,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:44,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899297925] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:44,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:44,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 117 [2021-10-08 16:22:44,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495480786] [2021-10-08 16:22:44,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2021-10-08 16:22:44,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-10-08 16:22:44,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-08 16:22:44,146 INFO L87 Difference]: Start difference. First operand 964 states and 2285 transitions. Second operand has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:49,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:22:49,910 INFO L93 Difference]: Finished difference Result 1906 states and 4521 transitions. [2021-10-08 16:22:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-10-08 16:22:49,910 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 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 119 [2021-10-08 16:22:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:22:49,913 INFO L225 Difference]: With dead ends: 1906 [2021-10-08 16:22:49,913 INFO L226 Difference]: Without dead ends: 1436 [2021-10-08 16:22:49,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 5737.1ms TimeCoverageRelationStatistics Valid=7021, Invalid=7021, Unknown=0, NotChecked=0, Total=14042 [2021-10-08 16:22:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-10-08 16:22:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 972. [2021-10-08 16:22:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 969 states have (on average 2.3777089783281733) internal successors, (2304), 971 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2304 transitions. [2021-10-08 16:22:49,940 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2304 transitions. Word has length 119 [2021-10-08 16:22:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:22:49,940 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 2304 transitions. [2021-10-08 16:22:49,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 1.0423728813559323) internal successors, (123), 118 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:22:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2304 transitions. [2021-10-08 16:22:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-08 16:22:49,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:22:49,942 INFO L512 BasicCegarLoop]: trace histogram [116, 1, 1, 1, 1] [2021-10-08 16:22:49,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-10-08 16:22:50,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2021-10-08 16:22:50,149 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:22:50,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:22:50,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1615716443, now seen corresponding path program 116 times [2021-10-08 16:22:50,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:22:50,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850495677] [2021-10-08 16:22:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:22:50,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:22:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:22:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:56,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:22:56,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850495677] [2021-10-08 16:22:56,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850495677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:56,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76671106] [2021-10-08 16:22:56,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:22:56,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:22:56,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:22:56,229 INFO L229 MonitoredProcess]: Starting monitored process 122 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 16:22:56,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-10-08 16:22:58,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:22:58,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:22:58,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 119 conjunts are in the unsatisfiable core [2021-10-08 16:22:58,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:22:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:22:58,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76671106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:22:58,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:22:58,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 118 [2021-10-08 16:22:58,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329805684] [2021-10-08 16:22:58,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-10-08 16:22:58,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:22:58,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-10-08 16:22:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-08 16:22:58,921 INFO L87 Difference]: Start difference. First operand 972 states and 2304 transitions. Second operand has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:04,863 INFO L93 Difference]: Finished difference Result 1922 states and 4559 transitions. [2021-10-08 16:23:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-10-08 16:23:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 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 120 [2021-10-08 16:23:04,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:04,866 INFO L225 Difference]: With dead ends: 1922 [2021-10-08 16:23:04,866 INFO L226 Difference]: Without dead ends: 1448 [2021-10-08 16:23:04,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 5767.9ms TimeCoverageRelationStatistics Valid=7140, Invalid=7140, Unknown=0, NotChecked=0, Total=14280 [2021-10-08 16:23:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2021-10-08 16:23:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 980. [2021-10-08 16:23:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 977 states have (on average 2.377686796315251) internal successors, (2323), 979 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 2323 transitions. [2021-10-08 16:23:04,882 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 2323 transitions. Word has length 120 [2021-10-08 16:23:04,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:04,883 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 2323 transitions. [2021-10-08 16:23:04,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 1.0420168067226891) internal successors, (124), 119 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:04,883 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 2323 transitions. [2021-10-08 16:23:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-08 16:23:04,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:04,885 INFO L512 BasicCegarLoop]: trace histogram [117, 1, 1, 1, 1] [2021-10-08 16:23:04,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-10-08 16:23:05,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-10-08 16:23:05,091 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:23:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:05,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1452399467, now seen corresponding path program 117 times [2021-10-08 16:23:05,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:05,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792513955] [2021-10-08 16:23:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:05,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:11,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:11,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792513955] [2021-10-08 16:23:11,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792513955] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:11,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851683017] [2021-10-08 16:23:11,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:23:11,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:11,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:11,302 INFO L229 MonitoredProcess]: Starting monitored process 123 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 16:23:11,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-10-08 16:23:13,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2021-10-08 16:23:13,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:13,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 120 conjunts are in the unsatisfiable core [2021-10-08 16:23:13,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:14,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851683017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:14,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:14,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 119 [2021-10-08 16:23:14,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886600632] [2021-10-08 16:23:14,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-10-08 16:23:14,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-10-08 16:23:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-08 16:23:14,167 INFO L87 Difference]: Start difference. First operand 980 states and 2323 transitions. Second operand has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:19,987 INFO L93 Difference]: Finished difference Result 1938 states and 4597 transitions. [2021-10-08 16:23:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-10-08 16:23:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 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 121 [2021-10-08 16:23:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:19,989 INFO L225 Difference]: With dead ends: 1938 [2021-10-08 16:23:19,990 INFO L226 Difference]: Without dead ends: 1460 [2021-10-08 16:23:19,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 5929.6ms TimeCoverageRelationStatistics Valid=7260, Invalid=7260, Unknown=0, NotChecked=0, Total=14520 [2021-10-08 16:23:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-08 16:23:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 988. [2021-10-08 16:23:20,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 985 states have (on average 2.3776649746192895) internal successors, (2342), 987 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 2342 transitions. [2021-10-08 16:23:20,003 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 2342 transitions. Word has length 121 [2021-10-08 16:23:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:20,004 INFO L470 AbstractCegarLoop]: Abstraction has 988 states and 2342 transitions. [2021-10-08 16:23:20,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 120 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 2342 transitions. [2021-10-08 16:23:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-08 16:23:20,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:20,006 INFO L512 BasicCegarLoop]: trace histogram [118, 1, 1, 1, 1] [2021-10-08 16:23:20,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2021-10-08 16:23:20,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:20,207 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:23:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2074712165, now seen corresponding path program 118 times [2021-10-08 16:23:20,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:20,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840502377] [2021-10-08 16:23:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:20,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:26,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:26,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840502377] [2021-10-08 16:23:26,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840502377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:26,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629478449] [2021-10-08 16:23:26,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:23:26,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:26,515 INFO L229 MonitoredProcess]: Starting monitored process 124 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 16:23:26,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-10-08 16:23:28,911 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:23:28,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:28,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 121 conjunts are in the unsatisfiable core [2021-10-08 16:23:28,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:29,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629478449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:29,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:29,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 120 [2021-10-08 16:23:29,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838421391] [2021-10-08 16:23:29,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-10-08 16:23:29,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:29,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-10-08 16:23:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-08 16:23:29,241 INFO L87 Difference]: Start difference. First operand 988 states and 2342 transitions. Second operand has 122 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:35,554 INFO L93 Difference]: Finished difference Result 1954 states and 4635 transitions. [2021-10-08 16:23:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-10-08 16:23:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 0 states have call successors, (0), 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 122 [2021-10-08 16:23:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:35,557 INFO L225 Difference]: With dead ends: 1954 [2021-10-08 16:23:35,557 INFO L226 Difference]: Without dead ends: 1472 [2021-10-08 16:23:35,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 6043.4ms TimeCoverageRelationStatistics Valid=7381, Invalid=7381, Unknown=0, NotChecked=0, Total=14762 [2021-10-08 16:23:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-10-08 16:23:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 996. [2021-10-08 16:23:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 993 states have (on average 2.377643504531722) internal successors, (2361), 995 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 2361 transitions. [2021-10-08 16:23:35,571 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 2361 transitions. Word has length 122 [2021-10-08 16:23:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:35,571 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 2361 transitions. [2021-10-08 16:23:35,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 1.0413223140495869) internal successors, (126), 121 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:35,571 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 2361 transitions. [2021-10-08 16:23:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-08 16:23:35,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:35,572 INFO L512 BasicCegarLoop]: trace histogram [119, 1, 1, 1, 1] [2021-10-08 16:23:35,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2021-10-08 16:23:35,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-10-08 16:23:35,773 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:23:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:35,774 INFO L82 PathProgramCache]: Analyzing trace with hash -108430677, now seen corresponding path program 119 times [2021-10-08 16:23:35,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:35,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477735022] [2021-10-08 16:23:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:35,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:42,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:42,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477735022] [2021-10-08 16:23:42,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477735022] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:42,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068302215] [2021-10-08 16:23:42,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:23:42,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:42,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:42,422 INFO L229 MonitoredProcess]: Starting monitored process 125 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 16:23:42,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-08 16:23:44,944 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2021-10-08 16:23:44,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:23:44,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 122 conjunts are in the unsatisfiable core [2021-10-08 16:23:44,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:23:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:45,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068302215] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:45,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:23:45,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 121 [2021-10-08 16:23:45,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909593755] [2021-10-08 16:23:45,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-10-08 16:23:45,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:23:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-10-08 16:23:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-08 16:23:45,263 INFO L87 Difference]: Start difference. First operand 996 states and 2361 transitions. Second operand has 123 states, 122 states have (on average 1.040983606557377) internal successors, (127), 122 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:23:51,453 INFO L93 Difference]: Finished difference Result 1970 states and 4673 transitions. [2021-10-08 16:23:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-10-08 16:23:51,453 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 1.040983606557377) internal successors, (127), 122 states have internal predecessors, (127), 0 states have call successors, (0), 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 123 [2021-10-08 16:23:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:23:51,456 INFO L225 Difference]: With dead ends: 1970 [2021-10-08 16:23:51,456 INFO L226 Difference]: Without dead ends: 1484 [2021-10-08 16:23:51,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 6245.6ms TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-08 16:23:51,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2021-10-08 16:23:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1004. [2021-10-08 16:23:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1001 states have (on average 2.3776223776223775) internal successors, (2380), 1003 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2380 transitions. [2021-10-08 16:23:51,476 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2380 transitions. Word has length 123 [2021-10-08 16:23:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:23:51,476 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2380 transitions. [2021-10-08 16:23:51,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 1.040983606557377) internal successors, (127), 122 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:23:51,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2380 transitions. [2021-10-08 16:23:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-08 16:23:51,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:23:51,479 INFO L512 BasicCegarLoop]: trace histogram [120, 1, 1, 1, 1] [2021-10-08 16:23:51,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-08 16:23:51,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:51,692 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:23:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:23:51,693 INFO L82 PathProgramCache]: Analyzing trace with hash 933617957, now seen corresponding path program 120 times [2021-10-08 16:23:51,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:23:51,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107769410] [2021-10-08 16:23:51,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:23:51,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:23:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:23:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:23:58,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:23:58,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107769410] [2021-10-08 16:23:58,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107769410] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:23:58,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340403961] [2021-10-08 16:23:58,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:23:58,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:23:58,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:23:58,235 INFO L229 MonitoredProcess]: Starting monitored process 126 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 16:23:58,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-10-08 16:24:00,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-10-08 16:24:00,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:00,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-08 16:24:00,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:24:01,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340403961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:01,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:01,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 122 [2021-10-08 16:24:01,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584370599] [2021-10-08 16:24:01,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-10-08 16:24:01,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-10-08 16:24:01,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-08 16:24:01,192 INFO L87 Difference]: Start difference. First operand 1004 states and 2380 transitions. Second operand has 124 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:07,485 INFO L93 Difference]: Finished difference Result 1986 states and 4711 transitions. [2021-10-08 16:24:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-10-08 16:24:07,486 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 0 states have call successors, (0), 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 124 [2021-10-08 16:24:07,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:07,488 INFO L225 Difference]: With dead ends: 1986 [2021-10-08 16:24:07,488 INFO L226 Difference]: Without dead ends: 1496 [2021-10-08 16:24:07,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 6212.6ms TimeCoverageRelationStatistics Valid=7626, Invalid=7626, Unknown=0, NotChecked=0, Total=15252 [2021-10-08 16:24:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-08 16:24:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1012. [2021-10-08 16:24:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 1009 states have (on average 2.377601585728444) internal successors, (2399), 1011 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 2399 transitions. [2021-10-08 16:24:07,503 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 2399 transitions. Word has length 124 [2021-10-08 16:24:07,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:07,503 INFO L470 AbstractCegarLoop]: Abstraction has 1012 states and 2399 transitions. [2021-10-08 16:24:07,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 1.0406504065040652) internal successors, (128), 123 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 2399 transitions. [2021-10-08 16:24:07,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-08 16:24:07,505 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:07,505 INFO L512 BasicCegarLoop]: trace histogram [121, 1, 1, 1, 1] [2021-10-08 16:24:07,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2021-10-08 16:24:07,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:07,711 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:24:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1122612757, now seen corresponding path program 121 times [2021-10-08 16:24:07,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:07,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743563742] [2021-10-08 16:24:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:07,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:24:14,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:14,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743563742] [2021-10-08 16:24:14,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743563742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:14,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946300702] [2021-10-08 16:24:14,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 16:24:14,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:14,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:14,354 INFO L229 MonitoredProcess]: Starting monitored process 127 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 16:24:14,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-10-08 16:24:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:16,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 124 conjunts are in the unsatisfiable core [2021-10-08 16:24:16,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:24:17,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946300702] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:17,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:17,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 123 [2021-10-08 16:24:17,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461319411] [2021-10-08 16:24:17,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-10-08 16:24:17,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-10-08 16:24:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-08 16:24:17,167 INFO L87 Difference]: Start difference. First operand 1012 states and 2399 transitions. Second operand has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:23,784 INFO L93 Difference]: Finished difference Result 2002 states and 4749 transitions. [2021-10-08 16:24:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-10-08 16:24:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 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 125 [2021-10-08 16:24:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:23,787 INFO L225 Difference]: With dead ends: 2002 [2021-10-08 16:24:23,787 INFO L226 Difference]: Without dead ends: 1508 [2021-10-08 16:24:23,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 6339.1ms TimeCoverageRelationStatistics Valid=7750, Invalid=7750, Unknown=0, NotChecked=0, Total=15500 [2021-10-08 16:24:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-10-08 16:24:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1020. [2021-10-08 16:24:23,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1017 states have (on average 2.377581120943953) internal successors, (2418), 1019 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2418 transitions. [2021-10-08 16:24:23,801 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2418 transitions. Word has length 125 [2021-10-08 16:24:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:23,802 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 2418 transitions. [2021-10-08 16:24:23,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 1.0403225806451613) internal successors, (129), 124 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2418 transitions. [2021-10-08 16:24:23,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-08 16:24:23,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:23,803 INFO L512 BasicCegarLoop]: trace histogram [122, 1, 1, 1, 1] [2021-10-08 16:24:23,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-10-08 16:24:24,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:24,004 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:24:24,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:24,005 INFO L82 PathProgramCache]: Analyzing trace with hash -441255451, now seen corresponding path program 122 times [2021-10-08 16:24:24,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:24,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326215760] [2021-10-08 16:24:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:24,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:24:30,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:30,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326215760] [2021-10-08 16:24:30,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326215760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:30,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788038609] [2021-10-08 16:24:30,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:24:30,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:30,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:30,807 INFO L229 MonitoredProcess]: Starting monitored process 128 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 16:24:30,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-10-08 16:24:33,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:24:33,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:33,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 125 conjunts are in the unsatisfiable core [2021-10-08 16:24:33,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:24:33,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788038609] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:33,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:33,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 124 [2021-10-08 16:24:33,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474614825] [2021-10-08 16:24:33,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-10-08 16:24:33,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:33,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-10-08 16:24:33,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-08 16:24:33,686 INFO L87 Difference]: Start difference. First operand 1020 states and 2418 transitions. Second operand has 126 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:40,822 INFO L93 Difference]: Finished difference Result 2018 states and 4787 transitions. [2021-10-08 16:24:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-10-08 16:24:40,822 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 0 states have call successors, (0), 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 126 [2021-10-08 16:24:40,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:40,825 INFO L225 Difference]: With dead ends: 2018 [2021-10-08 16:24:40,825 INFO L226 Difference]: Without dead ends: 1520 [2021-10-08 16:24:40,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 6444.2ms TimeCoverageRelationStatistics Valid=7875, Invalid=7875, Unknown=0, NotChecked=0, Total=15750 [2021-10-08 16:24:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-10-08 16:24:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1028. [2021-10-08 16:24:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1025 states have (on average 2.377560975609756) internal successors, (2437), 1027 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 2437 transitions. [2021-10-08 16:24:40,839 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 2437 transitions. Word has length 126 [2021-10-08 16:24:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:40,840 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 2437 transitions. [2021-10-08 16:24:40,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.04) internal successors, (130), 125 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 2437 transitions. [2021-10-08 16:24:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-08 16:24:40,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:40,841 INFO L512 BasicCegarLoop]: trace histogram [123, 1, 1, 1, 1] [2021-10-08 16:24:40,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2021-10-08 16:24:41,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-10-08 16:24:41,042 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:24:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:41,043 INFO L82 PathProgramCache]: Analyzing trace with hash -794015445, now seen corresponding path program 123 times [2021-10-08 16:24:41,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:41,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913718426] [2021-10-08 16:24:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:41,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:24:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:24:48,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:24:48,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913718426] [2021-10-08 16:24:48,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913718426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:48,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692602802] [2021-10-08 16:24:48,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 16:24:48,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:24:48,017 INFO L229 MonitoredProcess]: Starting monitored process 129 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 16:24:48,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-10-08 16:24:50,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2021-10-08 16:24:50,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:24:50,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 126 conjunts are in the unsatisfiable core [2021-10-08 16:24:50,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:24:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:24:51,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692602802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:24:51,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:24:51,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 125 [2021-10-08 16:24:51,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731804331] [2021-10-08 16:24:51,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-10-08 16:24:51,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:24:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-10-08 16:24:51,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-08 16:24:51,111 INFO L87 Difference]: Start difference. First operand 1028 states and 2437 transitions. Second operand has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:57,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:24:57,974 INFO L93 Difference]: Finished difference Result 2034 states and 4825 transitions. [2021-10-08 16:24:57,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-10-08 16:24:57,974 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 states have internal predecessors, (131), 0 states have call successors, (0), 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 127 [2021-10-08 16:24:57,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:24:57,977 INFO L225 Difference]: With dead ends: 2034 [2021-10-08 16:24:57,977 INFO L226 Difference]: Without dead ends: 1532 [2021-10-08 16:24:57,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 6621.8ms TimeCoverageRelationStatistics Valid=8001, Invalid=8001, Unknown=0, NotChecked=0, Total=16002 [2021-10-08 16:24:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-10-08 16:24:58,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1036. [2021-10-08 16:24:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1033 states have (on average 2.377541142303969) internal successors, (2456), 1035 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 2456 transitions. [2021-10-08 16:24:58,007 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 2456 transitions. Word has length 127 [2021-10-08 16:24:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:24:58,007 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 2456 transitions. [2021-10-08 16:24:58,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 1.0396825396825398) internal successors, (131), 126 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:24:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 2456 transitions. [2021-10-08 16:24:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-08 16:24:58,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:24:58,009 INFO L512 BasicCegarLoop]: trace histogram [124, 1, 1, 1, 1] [2021-10-08 16:24:58,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2021-10-08 16:24:58,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,129 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:24:58,210 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:24:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:24:58,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1155326629, now seen corresponding path program 124 times [2021-10-08 16:24:58,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:24:58,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535338622] [2021-10-08 16:24:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:24:58,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:24:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:25:05,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:05,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535338622] [2021-10-08 16:25:05,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535338622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:05,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989895869] [2021-10-08 16:25:05,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 16:25:05,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:05,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:05,167 INFO L229 MonitoredProcess]: Starting monitored process 130 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 16:25:05,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-10-08 16:25:07,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 16:25:07,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:07,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 127 conjunts are in the unsatisfiable core [2021-10-08 16:25:07,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:25:08,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989895869] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:08,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:08,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 126 [2021-10-08 16:25:08,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552937858] [2021-10-08 16:25:08,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-10-08 16:25:08,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:08,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-10-08 16:25:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-08 16:25:08,107 INFO L87 Difference]: Start difference. First operand 1036 states and 2456 transitions. Second operand has 128 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:15,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:15,419 INFO L93 Difference]: Finished difference Result 2050 states and 4863 transitions. [2021-10-08 16:25:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-10-08 16:25:15,419 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 0 states have call successors, (0), 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 128 [2021-10-08 16:25:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:15,422 INFO L225 Difference]: With dead ends: 2050 [2021-10-08 16:25:15,422 INFO L226 Difference]: Without dead ends: 1544 [2021-10-08 16:25:15,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 6672.5ms TimeCoverageRelationStatistics Valid=8128, Invalid=8128, Unknown=0, NotChecked=0, Total=16256 [2021-10-08 16:25:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-10-08 16:25:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1044. [2021-10-08 16:25:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1041 states have (on average 2.377521613832853) internal successors, (2475), 1043 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 2475 transitions. [2021-10-08 16:25:15,442 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 2475 transitions. Word has length 128 [2021-10-08 16:25:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:15,442 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 2475 transitions. [2021-10-08 16:25:15,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.0393700787401574) internal successors, (132), 127 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 2475 transitions. [2021-10-08 16:25:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-08 16:25:15,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:15,445 INFO L512 BasicCegarLoop]: trace histogram [125, 1, 1, 1, 1] [2021-10-08 16:25:15,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2021-10-08 16:25:15,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-08 16:25:15,660 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:25:15,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:15,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1455388779, now seen corresponding path program 125 times [2021-10-08 16:25:15,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:15,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704301954] [2021-10-08 16:25:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:15,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:25:22,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:22,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704301954] [2021-10-08 16:25:22,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704301954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:22,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026069674] [2021-10-08 16:25:22,430 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 16:25:22,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:22,431 INFO L229 MonitoredProcess]: Starting monitored process 131 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 16:25:22,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-10-08 16:25:25,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-10-08 16:25:25,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:25,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 128 conjunts are in the unsatisfiable core [2021-10-08 16:25:25,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:25:25,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026069674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:25,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:25,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 127 [2021-10-08 16:25:25,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234237897] [2021-10-08 16:25:25,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-10-08 16:25:25,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:25,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-10-08 16:25:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-08 16:25:25,590 INFO L87 Difference]: Start difference. First operand 1044 states and 2475 transitions. Second operand has 129 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:33,661 INFO L93 Difference]: Finished difference Result 2066 states and 4901 transitions. [2021-10-08 16:25:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-10-08 16:25:33,661 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 0 states have call successors, (0), 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 129 [2021-10-08 16:25:33,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:33,664 INFO L225 Difference]: With dead ends: 2066 [2021-10-08 16:25:33,664 INFO L226 Difference]: Without dead ends: 1556 [2021-10-08 16:25:33,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6497.9ms TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2021-10-08 16:25:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2021-10-08 16:25:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1052. [2021-10-08 16:25:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1049 states have (on average 2.3775023832221165) internal successors, (2494), 1051 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 2494 transitions. [2021-10-08 16:25:33,679 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 2494 transitions. Word has length 129 [2021-10-08 16:25:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:33,679 INFO L470 AbstractCegarLoop]: Abstraction has 1052 states and 2494 transitions. [2021-10-08 16:25:33,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 1.0390625) internal successors, (133), 128 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 2494 transitions. [2021-10-08 16:25:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-08 16:25:33,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:33,680 INFO L512 BasicCegarLoop]: trace histogram [126, 1, 1, 1, 1] [2021-10-08 16:25:33,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2021-10-08 16:25:33,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-10-08 16:25:33,881 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:25:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:33,882 INFO L82 PathProgramCache]: Analyzing trace with hash -2127586459, now seen corresponding path program 126 times [2021-10-08 16:25:33,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:33,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036844721] [2021-10-08 16:25:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:33,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:25:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:25:41,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 16:25:41,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036844721] [2021-10-08 16:25:41,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036844721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:41,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432690594] [2021-10-08 16:25:41,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 16:25:41,055 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:41,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:25:41,056 INFO L229 MonitoredProcess]: Starting monitored process 132 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 16:25:41,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-10-08 16:25:43,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2021-10-08 16:25:43,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:25:43,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 129 conjunts are in the unsatisfiable core [2021-10-08 16:25:43,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:25:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:25:44,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432690594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 16:25:44,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:25:44,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 128 [2021-10-08 16:25:44,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298749742] [2021-10-08 16:25:44,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-10-08 16:25:44,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 16:25:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-10-08 16:25:44,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2021-10-08 16:25:44,235 INFO L87 Difference]: Start difference. First operand 1052 states and 2494 transitions. Second operand has 130 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:25:52,179 INFO L93 Difference]: Finished difference Result 2082 states and 4939 transitions. [2021-10-08 16:25:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-10-08 16:25:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 0 states have call successors, (0), 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 130 [2021-10-08 16:25:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:25:52,182 INFO L225 Difference]: With dead ends: 2082 [2021-10-08 16:25:52,182 INFO L226 Difference]: Without dead ends: 1568 [2021-10-08 16:25:52,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 6888.5ms TimeCoverageRelationStatistics Valid=8385, Invalid=8385, Unknown=0, NotChecked=0, Total=16770 [2021-10-08 16:25:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2021-10-08 16:25:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1060. [2021-10-08 16:25:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1057 states have (on average 2.377483443708609) internal successors, (2513), 1059 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 2513 transitions. [2021-10-08 16:25:52,197 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 2513 transitions. Word has length 130 [2021-10-08 16:25:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:25:52,198 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 2513 transitions. [2021-10-08 16:25:52,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:25:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 2513 transitions. [2021-10-08 16:25:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-08 16:25:52,199 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:25:52,199 INFO L512 BasicCegarLoop]: trace histogram [127, 1, 1, 1, 1] [2021-10-08 16:25:52,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2021-10-08 16:25:52,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:25:52,400 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-08 16:25:52,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:25:52,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1530669141, now seen corresponding path program 127 times [2021-10-08 16:25:52,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 16:25:52,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181296658] [2021-10-08 16:25:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:25:52,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 16:25:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2021-10-08 16:25:57,952 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-10-08 16:25:57,953 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. [2021-10-08 16:25:57,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,956 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,957 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,957 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:25:57,957 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:25:57,957 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,957 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,957 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,957 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,958 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,958 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,958 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-08 16:25:57,965 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:25:57,965 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:25:57,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 04:25:57 BasicIcfg [2021-10-08 16:25:57,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 16:25:57,968 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-08 16:25:57,969 INFO L168 Benchmark]: Toolchain (without parser) took 744772.37 ms. Allocated memory was 159.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 134.7 MB in the beginning and 256.4 MB in the end (delta: -121.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-10-08 16:25:57,970 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 133.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:25:57,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.87 ms. Allocated memory is still 159.4 MB. Free memory was 134.4 MB in the beginning and 123.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:57,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.32 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:57,971 INFO L168 Benchmark]: Boogie Preprocessor took 49.97 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 121.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:57,971 INFO L168 Benchmark]: RCFGBuilder took 673.95 ms. Allocated memory is still 159.4 MB. Free memory was 121.1 MB in the beginning and 103.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-10-08 16:25:57,971 INFO L168 Benchmark]: TraceAbstraction took 743575.82 ms. Allocated memory was 159.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 102.9 MB in the beginning and 256.4 MB in the end (delta: -153.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. [2021-10-08 16:25:57,973 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 16:25:57,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 133.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 398.87 ms. Allocated memory is still 159.4 MB. Free memory was 134.4 MB in the beginning and 123.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.32 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.97 ms. Allocated memory is still 159.4 MB. Free memory was 122.1 MB in the beginning and 121.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 673.95 ms. Allocated memory is still 159.4 MB. Free memory was 121.1 MB in the beginning and 103.3 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 743575.82 ms. Allocated memory was 159.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 102.9 MB in the beginning and 256.4 MB in the end (delta: -153.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3841.7ms, 92 PlacesBefore, 32 PlacesAfterwards, 91 TransitionsBefore, 27 TransitionsAfterwards, 772 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 88 TotalNumberOfCompositions, 1036 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1004, positive: 1000, positive conditional: 0, positive unconditional: 1000, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 457, positive: 455, positive conditional: 0, positive unconditional: 455, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 457, positive: 454, positive conditional: 0, positive unconditional: 454, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1004, positive: 545, positive conditional: 0, positive unconditional: 545, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 457, unknown conditional: 0, unknown unconditional: 457] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 132 with TraceHistMax 127,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 113 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 743442.7ms, OverallIterations: 139, TraceHistogramMax: 127, EmptinessCheckTime: 173.2ms, AutomataDifference: 247041.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3904.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25823 SDtfs, 184094 SDslu, 142573 SDs, 0 SdLazy, 18372 SolverSat, 32699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26775.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16566 GetRequests, 8277 SyntacticMatches, 0 SemanticMatches, 8289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15798 ImplicationChecksByTransitivity, 287932.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1060occurred in iteration=138, InterpolantAutomatonStates: 8556, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1622.1ms AutomataMinimizationTime, 138 MinimizatonAttempts, 34272 StatesRemovedByMinimization, 134 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2488.4ms SsaConstructionTime, 17592.7ms SatisfiabilityAnalysisTime, 325283.0ms InterpolantComputationTime, 17137 NumberOfCodeBlocks, 17135 NumberOfCodeBlocksAsserted, 2369 NumberOfCheckSat, 16868 ConstructedInterpolants, 0 QuantifiedInterpolants, 50844 SizeOfPredicates, 2 NumberOfNonLiveVariables, 79567 ConjunctsInSsa, 8403 ConjunctsInUnsatCore, 269 InterpolantComputations, 9 PerfectInterpolantSequences, 8/682771 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown