/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-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:58:10,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:58:10,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:58:10,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-07 14:58:10,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-07 14:58:10,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-07 14:58:10,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-07 14:58:10,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-07 14:58:10,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-07 14:58:10,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-07 14:58:10,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-07 14:58:10,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-07 14:58:10,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 14:58:10,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 14:58:10,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 14:58:10,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 14:58:10,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 14:58:10,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 14:58:10,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 14:58:10,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 14:58:10,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 14:58:10,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 14:58:10,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 14:58:10,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 14:58:10,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 14:58:10,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:58:10,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:58:10,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:58:10,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:58:10,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:58:10,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:58:10,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:58:10,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:58:10,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:58:10,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:58:10,661 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:58:10,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:58:10,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:58:10,662 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:58:10,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:58:10,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:58:10,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:58:10,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:58:10,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:58:10,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:58:10,664 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:58:10,664 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:58:10,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:58:10,665 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:58:10,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:58:10,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:58:10,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:58:10,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:58:10,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:10,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:58:10,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:58:10,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:58:10,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:58:10,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:58:10,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:58:10,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:58:10,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:58:11,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:58:11,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:58:11,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:58:11,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:58:11,180 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:58:11,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-10-07 14:58:11,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27ff42101/df3071feca704e2f9a37dcbdd38b97f2/FLAGe7f0e037d [2021-10-07 14:58:11,948 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:58:11,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2021-10-07 14:58:11,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27ff42101/df3071feca704e2f9a37dcbdd38b97f2/FLAGe7f0e037d [2021-10-07 14:58:12,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27ff42101/df3071feca704e2f9a37dcbdd38b97f2 [2021-10-07 14:58:12,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:58:12,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:58:12,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:12,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:58:12,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:58:12,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197a4f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12, skipping insertion in model container [2021-10-07 14:58:12,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:58:12,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:58:12,489 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-channel-sum.wvr.c[2462,2475] [2021-10-07 14:58:12,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:12,506 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:58:12,533 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-channel-sum.wvr.c[2462,2475] [2021-10-07 14:58:12,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:12,559 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:58:12,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12 WrapperNode [2021-10-07 14:58:12,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:12,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:12,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:58:12,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:58:12,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:12,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:58:12,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:58:12,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:58:12,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:58:12,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:58:12,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:58:12,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:58:12,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (1/1) ... [2021-10-07 14:58:12,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:12,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:12,715 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) [2021-10-07 14:58:12,740 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 [2021-10-07 14:58:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:58:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:58:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:58:12,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:58:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:58:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:58:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:58:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 14:58:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:58:12,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:58:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:58:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:58:12,809 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:58:13,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:58:13,402 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-07 14:58:13,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:13 BoogieIcfgContainer [2021-10-07 14:58:13,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:58:13,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:58:13,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:58:13,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:58:13,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:58:12" (1/3) ... [2021-10-07 14:58:13,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610f894d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:13, skipping insertion in model container [2021-10-07 14:58:13,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:12" (2/3) ... [2021-10-07 14:58:13,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610f894d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:13, skipping insertion in model container [2021-10-07 14:58:13,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:13" (3/3) ... [2021-10-07 14:58:13,423 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2021-10-07 14:58:13,432 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:58:13,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:58:13,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 14:58:13,433 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:58:13,523 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,524 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,525 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,525 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,525 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,528 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,530 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,535 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,536 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,537 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,539 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,540 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,541 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,541 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,545 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,546 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,546 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,547 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,550 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,551 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,552 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,552 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,552 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,552 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,553 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,553 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,553 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,553 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,553 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,554 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,560 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,561 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,562 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,565 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,565 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,566 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,566 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,567 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,567 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,568 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,568 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,569 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,570 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,574 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,581 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,582 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,583 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,583 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,584 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,584 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,584 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,594 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,595 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,603 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~flag~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,604 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,604 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,604 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,604 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,605 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,605 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,605 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,605 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,605 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:13,629 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 14:58:13,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:58:13,720 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 [2021-10-07 14:58:13,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-10-07 14:58:13,757 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:58:13,779 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 168 transitions, 352 flow [2021-10-07 14:58:13,783 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 168 transitions, 352 flow [2021-10-07 14:58:13,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 161 places, 168 transitions, 352 flow [2021-10-07 14:58:13,926 INFO L129 PetriNetUnfolder]: 14/166 cut-off events. [2021-10-07 14:58:13,926 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 14:58:13,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 166 events. 14/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 259 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2021-10-07 14:58:13,941 INFO L116 LiptonReduction]: Number of co-enabled transitions 3476 [2021-10-07 14:58:21,798 INFO L131 LiptonReduction]: Checked pairs total: 4152 [2021-10-07 14:58:21,798 INFO L133 LiptonReduction]: Total number of compositions: 201 [2021-10-07 14:58:21,809 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 72 flow [2021-10-07 14:58:21,829 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 111 states, 85 states have (on average 3.0470588235294116) internal successors, (259), 110 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 85 states have (on average 3.0470588235294116) internal successors, (259), 110 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:21,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 14:58:21,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:21,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 14:58:21,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:21,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:21,847 INFO L82 PathProgramCache]: Analyzing trace with hash 22393, now seen corresponding path program 1 times [2021-10-07 14:58:21,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:21,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488996398] [2021-10-07 14:58:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:21,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:22,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:22,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488996398] [2021-10-07 14:58:22,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488996398] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:22,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:22,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:22,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803699835] [2021-10-07 14:58:22,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:22,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:22,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:22,092 INFO L87 Difference]: Start difference. First operand has 111 states, 85 states have (on average 3.0470588235294116) internal successors, (259), 110 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:22,135 INFO L93 Difference]: Finished difference Result 139 states and 321 transitions. [2021-10-07 14:58:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-07 14:58:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:22,151 INFO L225 Difference]: With dead ends: 139 [2021-10-07 14:58:22,151 INFO L226 Difference]: Without dead ends: 139 [2021-10-07 14:58:22,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-07 14:58:22,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 72. [2021-10-07 14:58:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 2.7796610169491527) internal successors, (164), 71 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 164 transitions. [2021-10-07 14:58:22,201 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 164 transitions. Word has length 2 [2021-10-07 14:58:22,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:22,201 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 164 transitions. [2021-10-07 14:58:22,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 164 transitions. [2021-10-07 14:58:22,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:58:22,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:22,202 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:58:22,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:58:22,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:22,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:22,204 INFO L82 PathProgramCache]: Analyzing trace with hash 696209, now seen corresponding path program 1 times [2021-10-07 14:58:22,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:22,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661425308] [2021-10-07 14:58:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:22,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:22,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:22,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661425308] [2021-10-07 14:58:22,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661425308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:22,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673106754] [2021-10-07 14:58:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:22,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:22,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:22,282 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) [2021-10-07 14:58:22,289 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 [2021-10-07 14:58:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:22,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:58:22,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:22,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673106754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:22,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:22,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-07 14:58:22,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298746842] [2021-10-07 14:58:22,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:22,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:22,402 INFO L87 Difference]: Start difference. First operand 72 states and 164 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:22,428 INFO L93 Difference]: Finished difference Result 138 states and 320 transitions. [2021-10-07 14:58:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 14:58:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:22,432 INFO L225 Difference]: With dead ends: 138 [2021-10-07 14:58:22,432 INFO L226 Difference]: Without dead ends: 138 [2021-10-07 14:58:22,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-07 14:58:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 71. [2021-10-07 14:58:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 2.76271186440678) internal successors, (163), 70 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 163 transitions. [2021-10-07 14:58:22,447 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 163 transitions. Word has length 3 [2021-10-07 14:58:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:22,447 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 163 transitions. [2021-10-07 14:58:22,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 163 transitions. [2021-10-07 14:58:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 14:58:22,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:22,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 14:58:22,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 14:58:22,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:22,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:22,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash 696210, now seen corresponding path program 1 times [2021-10-07 14:58:22,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:22,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871800774] [2021-10-07 14:58:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:22,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:22,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:22,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871800774] [2021-10-07 14:58:22,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871800774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:22,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143441185] [2021-10-07 14:58:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:22,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:22,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:22,724 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) [2021-10-07 14:58:22,729 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 [2021-10-07 14:58:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:22,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:58:22,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:22,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143441185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:22,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:22,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:58:22,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966847583] [2021-10-07 14:58:22,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:58:22,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:58:22,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:22,791 INFO L87 Difference]: Start difference. First operand 71 states and 163 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:22,825 INFO L93 Difference]: Finished difference Result 206 states and 479 transitions. [2021-10-07 14:58:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:22,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 14:58:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:22,829 INFO L225 Difference]: With dead ends: 206 [2021-10-07 14:58:22,829 INFO L226 Difference]: Without dead ends: 206 [2021-10-07 14:58:22,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-07 14:58:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 72. [2021-10-07 14:58:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 2.75) internal successors, (165), 71 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 165 transitions. [2021-10-07 14:58:22,853 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 165 transitions. Word has length 3 [2021-10-07 14:58:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:22,853 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 165 transitions. [2021-10-07 14:58:22,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 165 transitions. [2021-10-07 14:58:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:58:22,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:22,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 14:58:22,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-07 14:58:23,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:23,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash 21573254, now seen corresponding path program 1 times [2021-10-07 14:58:23,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:23,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300715886] [2021-10-07 14:58:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:23,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:23,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:23,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:23,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300715886] [2021-10-07 14:58:23,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300715886] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:23,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:23,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:23,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730519817] [2021-10-07 14:58:23,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:23,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:23,108 INFO L87 Difference]: Start difference. First operand 72 states and 165 transitions. 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) [2021-10-07 14:58:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:23,137 INFO L93 Difference]: Finished difference Result 80 states and 173 transitions. [2021-10-07 14:58:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:23,138 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 [2021-10-07 14:58:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:23,139 INFO L225 Difference]: With dead ends: 80 [2021-10-07 14:58:23,139 INFO L226 Difference]: Without dead ends: 78 [2021-10-07 14:58:23,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-07 14:58:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2021-10-07 14:58:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 2.759259259259259) internal successors, (149), 65 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 149 transitions. [2021-10-07 14:58:23,149 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 149 transitions. Word has length 4 [2021-10-07 14:58:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:23,149 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 149 transitions. [2021-10-07 14:58:23,149 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) [2021-10-07 14:58:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 149 transitions. [2021-10-07 14:58:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:58:23,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:23,150 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 14:58:23,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-07 14:58:23,151 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash 21584506, now seen corresponding path program 2 times [2021-10-07 14:58:23,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:23,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939240938] [2021-10-07 14:58:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:23,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:23,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:23,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939240938] [2021-10-07 14:58:23,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939240938] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:23,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417763105] [2021-10-07 14:58:23,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:23,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:23,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:23,210 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) [2021-10-07 14:58:23,228 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 [2021-10-07 14:58:23,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:58:23,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:23,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:58:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:58:23,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417763105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:23,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:23,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 14:58:23,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646981508] [2021-10-07 14:58:23,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:23,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:58:23,285 INFO L87 Difference]: Start difference. First operand 66 states and 149 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:23,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:23,291 INFO L93 Difference]: Finished difference Result 65 states and 148 transitions. [2021-10-07 14:58:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:23,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 14:58:23,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:23,292 INFO L225 Difference]: With dead ends: 65 [2021-10-07 14:58:23,293 INFO L226 Difference]: Without dead ends: 65 [2021-10-07 14:58:23,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:58:23,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-07 14:58:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-10-07 14:58:23,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 2.769230769230769) internal successors, (144), 62 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 144 transitions. [2021-10-07 14:58:23,300 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 144 transitions. Word has length 4 [2021-10-07 14:58:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:23,301 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 144 transitions. [2021-10-07 14:58:23,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:23,301 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 144 transitions. [2021-10-07 14:58:23,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:58:23,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:23,302 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:23,339 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 [2021-10-07 14:58:23,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:23,517 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:23,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1557637383, now seen corresponding path program 1 times [2021-10-07 14:58:23,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:23,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487929752] [2021-10-07 14:58:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:23,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:23,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:23,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487929752] [2021-10-07 14:58:23,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487929752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:23,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:23,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:58:23,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155210959] [2021-10-07 14:58:23,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:23,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:23,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:58:23,586 INFO L87 Difference]: Start difference. First operand 63 states and 144 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:23,625 INFO L93 Difference]: Finished difference Result 81 states and 171 transitions. [2021-10-07 14:58:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:23,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:58:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:23,627 INFO L225 Difference]: With dead ends: 81 [2021-10-07 14:58:23,627 INFO L226 Difference]: Without dead ends: 64 [2021-10-07 14:58:23,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-07 14:58:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-07 14:58:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 63 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 145 transitions. [2021-10-07 14:58:23,634 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 145 transitions. Word has length 7 [2021-10-07 14:58:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:23,635 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 145 transitions. [2021-10-07 14:58:23,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 145 transitions. [2021-10-07 14:58:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:58:23,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:23,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:23,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-07 14:58:23,636 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:23,637 INFO L82 PathProgramCache]: Analyzing trace with hash 524246497, now seen corresponding path program 1 times [2021-10-07 14:58:23,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:23,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39647443] [2021-10-07 14:58:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:23,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:23,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:23,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39647443] [2021-10-07 14:58:23,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39647443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:23,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612647696] [2021-10-07 14:58:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:23,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:23,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:23,751 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) [2021-10-07 14:58:23,779 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 [2021-10-07 14:58:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:23,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:58:23,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:23,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612647696] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:23,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:23,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-07 14:58:23,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368050815] [2021-10-07 14:58:23,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:23,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:23,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:58:23,885 INFO L87 Difference]: Start difference. First operand 64 states and 145 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-10-07 14:58:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:23,898 INFO L93 Difference]: Finished difference Result 32 states and 67 transitions. [2021-10-07 14:58:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:23,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2021-10-07 14:58:23,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:23,900 INFO L225 Difference]: With dead ends: 32 [2021-10-07 14:58:23,900 INFO L226 Difference]: Without dead ends: 22 [2021-10-07 14:58:23,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:58:23,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-07 14:58:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-07 14:58:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 2.15) internal successors, (43), 21 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) [2021-10-07 14:58:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 43 transitions. [2021-10-07 14:58:23,908 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 43 transitions. Word has length 8 [2021-10-07 14:58:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:23,909 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 43 transitions. [2021-10-07 14:58:23,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-10-07 14:58:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 43 transitions. [2021-10-07 14:58:23,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:58:23,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:23,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:23,951 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 [2021-10-07 14:58:24,127 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 [2021-10-07 14:58:24,128 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash -928226926, now seen corresponding path program 1 times [2021-10-07 14:58:24,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:24,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802199055] [2021-10-07 14:58:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:24,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:24,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:24,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802199055] [2021-10-07 14:58:24,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802199055] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:24,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909246592] [2021-10-07 14:58:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:24,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:24,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:24,548 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) [2021-10-07 14:58:24,566 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 [2021-10-07 14:58:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:24,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 14:58:24,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:24,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:58:24,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-10-07 14:58:24,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 14:58:24,882 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:58:24,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 14:58:24,998 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:58:24,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 14:58:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:25,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909246592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:25,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:25,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 14:58:25,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931057684] [2021-10-07 14:58:25,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:58:25,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:58:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:58:25,413 INFO L87 Difference]: Start difference. First operand 22 states and 43 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2021-10-07 14:58:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:26,235 INFO L93 Difference]: Finished difference Result 50 states and 104 transitions. [2021-10-07 14:58:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:58:26,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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 [2021-10-07 14:58:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:26,237 INFO L225 Difference]: With dead ends: 50 [2021-10-07 14:58:26,237 INFO L226 Difference]: Without dead ends: 50 [2021-10-07 14:58:26,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 727.6ms TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:58:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-07 14:58:26,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-10-07 14:58:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 37 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) [2021-10-07 14:58:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 78 transitions. [2021-10-07 14:58:26,241 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 78 transitions. Word has length 9 [2021-10-07 14:58:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:26,242 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 78 transitions. [2021-10-07 14:58:26,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2021-10-07 14:58:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 78 transitions. [2021-10-07 14:58:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:58:26,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:26,244 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:26,282 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 [2021-10-07 14:58:26,455 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 [2021-10-07 14:58:26,456 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:26,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1289737065, now seen corresponding path program 1 times [2021-10-07 14:58:26,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:26,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275306725] [2021-10-07 14:58:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:26,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:26,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:26,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275306725] [2021-10-07 14:58:26,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275306725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:26,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:26,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:58:26,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690218899] [2021-10-07 14:58:26,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:26,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:58:26,542 INFO L87 Difference]: Start difference. First operand 38 states and 78 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 14:58:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:26,562 INFO L93 Difference]: Finished difference Result 74 states and 156 transitions. [2021-10-07 14:58:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:58:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:26,564 INFO L225 Difference]: With dead ends: 74 [2021-10-07 14:58:26,564 INFO L226 Difference]: Without dead ends: 68 [2021-10-07 14:58:26,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:58:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-07 14:58:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2021-10-07 14:58:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 2.375) internal successors, (114), 49 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) [2021-10-07 14:58:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 114 transitions. [2021-10-07 14:58:26,569 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 114 transitions. Word has length 10 [2021-10-07 14:58:26,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:26,570 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 114 transitions. [2021-10-07 14:58:26,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 14:58:26,570 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 114 transitions. [2021-10-07 14:58:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:58:26,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:26,571 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:26,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-07 14:58:26,572 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:26,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1692578182, now seen corresponding path program 2 times [2021-10-07 14:58:26,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:26,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959482830] [2021-10-07 14:58:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:26,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:27,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:27,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959482830] [2021-10-07 14:58:27,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959482830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:27,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134657793] [2021-10-07 14:58:27,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:27,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:27,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:27,405 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) [2021-10-07 14:58:27,425 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 [2021-10-07 14:58:27,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:58:27,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:27,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:58:27,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:58:27,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134657793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:27,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:27,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2021-10-07 14:58:27,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614073608] [2021-10-07 14:58:27,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:27,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:58:27,699 INFO L87 Difference]: Start difference. First operand 50 states and 114 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:27,734 INFO L93 Difference]: Finished difference Result 60 states and 143 transitions. [2021-10-07 14:58:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:27,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:58:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:27,736 INFO L225 Difference]: With dead ends: 60 [2021-10-07 14:58:27,736 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 14:58:27,737 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 238.4ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:58:27,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 14:58:27,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2021-10-07 14:58:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 2.375) internal successors, (114), 49 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) [2021-10-07 14:58:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 114 transitions. [2021-10-07 14:58:27,742 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 114 transitions. Word has length 10 [2021-10-07 14:58:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:27,742 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 114 transitions. [2021-10-07 14:58:27,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 114 transitions. [2021-10-07 14:58:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:58:27,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:27,743 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:27,783 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 [2021-10-07 14:58:27,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-07 14:58:27,959 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:27,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1692578179, now seen corresponding path program 1 times [2021-10-07 14:58:27,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:27,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470983879] [2021-10-07 14:58:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:27,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:28,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:28,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:28,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470983879] [2021-10-07 14:58:28,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470983879] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:28,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680774503] [2021-10-07 14:58:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:28,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:28,784 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) [2021-10-07 14:58:28,800 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 [2021-10-07 14:58:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:28,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:58:28,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:58:29,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680774503] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:29,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:29,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2021-10-07 14:58:29,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454450637] [2021-10-07 14:58:29,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:29,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:29,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:58:29,086 INFO L87 Difference]: Start difference. First operand 50 states and 114 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:29,118 INFO L93 Difference]: Finished difference Result 60 states and 135 transitions. [2021-10-07 14:58:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:58:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:29,120 INFO L225 Difference]: With dead ends: 60 [2021-10-07 14:58:29,120 INFO L226 Difference]: Without dead ends: 58 [2021-10-07 14:58:29,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 242.3ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:58:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-07 14:58:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-07 14:58:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 2.357142857142857) internal successors, (132), 57 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) [2021-10-07 14:58:29,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 132 transitions. [2021-10-07 14:58:29,125 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 132 transitions. Word has length 10 [2021-10-07 14:58:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:29,125 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 132 transitions. [2021-10-07 14:58:29,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 132 transitions. [2021-10-07 14:58:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:58:29,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:29,126 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:29,166 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 [2021-10-07 14:58:29,341 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 [2021-10-07 14:58:29,341 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:29,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:29,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1327140113, now seen corresponding path program 2 times [2021-10-07 14:58:29,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:29,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911670682] [2021-10-07 14:58:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:29,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:29,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:29,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911670682] [2021-10-07 14:58:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911670682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:29,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164352231] [2021-10-07 14:58:29,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:29,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:29,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:29,408 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) [2021-10-07 14:58:29,425 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 [2021-10-07 14:58:29,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:58:29,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:29,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:58:29,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:29,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 126 [2021-10-07 14:58:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:29,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164352231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:29,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:29,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 14:58:29,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242291683] [2021-10-07 14:58:29,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:58:29,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:29,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:58:29,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:58:29,770 INFO L87 Difference]: Start difference. First operand 58 states and 132 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 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) [2021-10-07 14:58:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:29,886 INFO L93 Difference]: Finished difference Result 46 states and 92 transitions. [2021-10-07 14:58:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:58:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 14:58:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:29,888 INFO L225 Difference]: With dead ends: 46 [2021-10-07 14:58:29,888 INFO L226 Difference]: Without dead ends: 35 [2021-10-07 14:58:29,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:58:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-07 14:58:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-07 14:58:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 34 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) [2021-10-07 14:58:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 78 transitions. [2021-10-07 14:58:29,891 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 78 transitions. Word has length 11 [2021-10-07 14:58:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:29,892 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 78 transitions. [2021-10-07 14:58:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 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) [2021-10-07 14:58:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 78 transitions. [2021-10-07 14:58:29,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:58:29,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:29,893 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:29,931 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 [2021-10-07 14:58:30,101 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 [2021-10-07 14:58:30,102 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:30,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:30,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1224990710, now seen corresponding path program 1 times [2021-10-07 14:58:30,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:30,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158257127] [2021-10-07 14:58:30,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:30,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:30,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:30,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158257127] [2021-10-07 14:58:30,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158257127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:30,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330746235] [2021-10-07 14:58:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:30,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:30,538 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) [2021-10-07 14:58:30,540 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 [2021-10-07 14:58:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:30,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 14:58:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:30,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 14:58:30,917 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 14:58:30,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-07 14:58:31,034 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 14:58:31,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-07 14:58:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:31,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330746235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:31,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:31,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-07 14:58:31,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868748169] [2021-10-07 14:58:31,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:58:31,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:58:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:58:31,532 INFO L87 Difference]: Start difference. First operand 35 states and 78 transitions. Second operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-10-07 14:58:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:32,430 INFO L93 Difference]: Finished difference Result 63 states and 127 transitions. [2021-10-07 14:58:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:58:32,432 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:58:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:32,433 INFO L225 Difference]: With dead ends: 63 [2021-10-07 14:58:32,433 INFO L226 Difference]: Without dead ends: 61 [2021-10-07 14:58:32,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1010.7ms TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:58:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-07 14:58:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2021-10-07 14:58:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 2.1454545454545455) internal successors, (118), 56 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) [2021-10-07 14:58:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 118 transitions. [2021-10-07 14:58:32,438 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 118 transitions. Word has length 12 [2021-10-07 14:58:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:32,438 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 118 transitions. [2021-10-07 14:58:32,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-10-07 14:58:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 118 transitions. [2021-10-07 14:58:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:58:32,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:32,439 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:32,480 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 [2021-10-07 14:58:32,652 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 [2021-10-07 14:58:32,653 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:32,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:32,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1224990713, now seen corresponding path program 3 times [2021-10-07 14:58:32,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:32,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677084111] [2021-10-07 14:58:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:32,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:32,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:32,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677084111] [2021-10-07 14:58:32,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677084111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:32,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864494182] [2021-10-07 14:58:32,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:58:32,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:32,982 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) [2021-10-07 14:58:32,984 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 [2021-10-07 14:58:33,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 14:58:33,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:33,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 14:58:33,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:33,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 14:58:33,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 14:58:33,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 14:58:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:33,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864494182] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:33,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:33,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-07 14:58:33,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298949194] [2021-10-07 14:58:33,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:58:33,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:33,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:58:33,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:58:33,706 INFO L87 Difference]: Start difference. First operand 57 states and 118 transitions. Second operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-10-07 14:58:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:34,253 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2021-10-07 14:58:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:58:34,254 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:58:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:34,254 INFO L225 Difference]: With dead ends: 55 [2021-10-07 14:58:34,254 INFO L226 Difference]: Without dead ends: 51 [2021-10-07 14:58:34,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 682.9ms TimeCoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:58:34,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-07 14:58:34,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-07 14:58:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 50 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) [2021-10-07 14:58:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 103 transitions. [2021-10-07 14:58:34,258 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 103 transitions. Word has length 12 [2021-10-07 14:58:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:34,258 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 103 transitions. [2021-10-07 14:58:34,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-10-07 14:58:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 103 transitions. [2021-10-07 14:58:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:58:34,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:34,260 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:34,303 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 [2021-10-07 14:58:34,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-07 14:58:34,460 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1224994430, now seen corresponding path program 2 times [2021-10-07 14:58:34,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:34,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335084741] [2021-10-07 14:58:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:34,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:34,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:34,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335084741] [2021-10-07 14:58:34,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335084741] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:34,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169719918] [2021-10-07 14:58:34,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:34,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:34,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:34,890 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) [2021-10-07 14:58:34,896 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 [2021-10-07 14:58:35,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:58:35,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:35,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-07 14:58:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:35,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-07 14:58:35,291 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:35,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 14:58:35,390 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:35,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 14:58:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:35,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169719918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:35,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:35,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-07 14:58:35,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218211803] [2021-10-07 14:58:35,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:58:35,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:58:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:58:35,816 INFO L87 Difference]: Start difference. First operand 51 states and 103 transitions. Second operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-10-07 14:58:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:36,571 INFO L93 Difference]: Finished difference Result 65 states and 138 transitions. [2021-10-07 14:58:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:58:36,572 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:58:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:36,573 INFO L225 Difference]: With dead ends: 65 [2021-10-07 14:58:36,573 INFO L226 Difference]: Without dead ends: 65 [2021-10-07 14:58:36,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 858.7ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:58:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-07 14:58:36,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2021-10-07 14:58:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 2.23728813559322) internal successors, (132), 60 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) [2021-10-07 14:58:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 132 transitions. [2021-10-07 14:58:36,578 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 132 transitions. Word has length 12 [2021-10-07 14:58:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:36,578 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 132 transitions. [2021-10-07 14:58:36,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-10-07 14:58:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 132 transitions. [2021-10-07 14:58:36,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:58:36,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:36,579 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:36,618 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 [2021-10-07 14:58:36,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:36,794 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:36,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:36,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1224994433, now seen corresponding path program 4 times [2021-10-07 14:58:36,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:36,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621321370] [2021-10-07 14:58:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:36,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:37,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:37,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621321370] [2021-10-07 14:58:37,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621321370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:37,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785969818] [2021-10-07 14:58:37,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:58:37,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:37,180 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) [2021-10-07 14:58:37,198 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 [2021-10-07 14:58:37,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:58:37,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:37,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 14:58:37,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:37,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-07 14:58:37,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 14:58:37,692 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:37,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-07 14:58:37,775 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 14:58:37,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-07 14:58:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785969818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:38,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 14:58:38,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575290377] [2021-10-07 14:58:38,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:58:38,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:38,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:58:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:58:38,486 INFO L87 Difference]: Start difference. First operand 61 states and 132 transitions. Second operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 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) [2021-10-07 14:58:39,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:39,176 INFO L93 Difference]: Finished difference Result 61 states and 124 transitions. [2021-10-07 14:58:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:58:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:58:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:39,178 INFO L225 Difference]: With dead ends: 61 [2021-10-07 14:58:39,179 INFO L226 Difference]: Without dead ends: 59 [2021-10-07 14:58:39,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 831.0ms TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:58:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-07 14:58:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2021-10-07 14:58:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 50 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) [2021-10-07 14:58:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 103 transitions. [2021-10-07 14:58:39,191 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 103 transitions. Word has length 12 [2021-10-07 14:58:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:39,193 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 103 transitions. [2021-10-07 14:58:39,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 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) [2021-10-07 14:58:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 103 transitions. [2021-10-07 14:58:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:58:39,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:39,195 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:39,229 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 [2021-10-07 14:58:39,409 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,SelfDestructingSolverStorable15 [2021-10-07 14:58:39,410 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:39,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1941640690, now seen corresponding path program 3 times [2021-10-07 14:58:39,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:39,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368127742] [2021-10-07 14:58:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:39,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:40,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:40,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368127742] [2021-10-07 14:58:40,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368127742] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:40,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539091417] [2021-10-07 14:58:40,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:58:40,684 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:40,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:40,685 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) [2021-10-07 14:58:40,691 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 [2021-10-07 14:58:40,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 14:58:40,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:40,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:58:40,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:58:41,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539091417] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:41,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:41,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 14 [2021-10-07 14:58:41,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463901579] [2021-10-07 14:58:41,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 14:58:41,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:41,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 14:58:41,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:58:41,323 INFO L87 Difference]: Start difference. First operand 51 states and 103 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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) [2021-10-07 14:58:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:42,184 INFO L93 Difference]: Finished difference Result 99 states and 214 transitions. [2021-10-07 14:58:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 14:58:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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 13 [2021-10-07 14:58:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:42,187 INFO L225 Difference]: With dead ends: 99 [2021-10-07 14:58:42,187 INFO L226 Difference]: Without dead ends: 97 [2021-10-07 14:58:42,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 933.3ms TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:58:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-07 14:58:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2021-10-07 14:58:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 2.2771084337349397) internal successors, (189), 84 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 189 transitions. [2021-10-07 14:58:42,191 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 189 transitions. Word has length 13 [2021-10-07 14:58:42,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:42,192 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 189 transitions. [2021-10-07 14:58:42,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 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) [2021-10-07 14:58:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 189 transitions. [2021-10-07 14:58:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:58:42,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:42,193 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:42,224 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 [2021-10-07 14:58:42,406 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,SelfDestructingSolverStorable16 [2021-10-07 14:58:42,407 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:42,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:42,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1941640687, now seen corresponding path program 5 times [2021-10-07 14:58:42,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:42,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217754026] [2021-10-07 14:58:42,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:42,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:43,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:43,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217754026] [2021-10-07 14:58:43,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217754026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:43,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710328487] [2021-10-07 14:58:43,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:58:43,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:43,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:43,303 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) [2021-10-07 14:58:43,317 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 [2021-10-07 14:58:43,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 14:58:43,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:43,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 14:58:43,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:43,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710328487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:43,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:43,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-07 14:58:43,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055239744] [2021-10-07 14:58:43,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:58:43,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:43,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:58:43,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:58:43,933 INFO L87 Difference]: Start difference. First operand 85 states and 189 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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) [2021-10-07 14:58:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:44,538 INFO L93 Difference]: Finished difference Result 97 states and 207 transitions. [2021-10-07 14:58:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 14:58:44,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 13 [2021-10-07 14:58:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:44,542 INFO L225 Difference]: With dead ends: 97 [2021-10-07 14:58:44,542 INFO L226 Difference]: Without dead ends: 89 [2021-10-07 14:58:44,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 796.2ms TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:58:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-07 14:58:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2021-10-07 14:58:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 2.180722891566265) internal successors, (181), 84 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 181 transitions. [2021-10-07 14:58:44,552 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 181 transitions. Word has length 13 [2021-10-07 14:58:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:44,552 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 181 transitions. [2021-10-07 14:58:44,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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) [2021-10-07 14:58:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 181 transitions. [2021-10-07 14:58:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:58:44,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:44,553 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:44,596 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 [2021-10-07 14:58:44,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-07 14:58:44,769 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:44,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1941636970, now seen corresponding path program 4 times [2021-10-07 14:58:44,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:44,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593435287] [2021-10-07 14:58:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:44,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:46,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:46,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593435287] [2021-10-07 14:58:46,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593435287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:46,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890617169] [2021-10-07 14:58:46,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:58:46,492 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:46,493 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) [2021-10-07 14:58:46,500 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 [2021-10-07 14:58:46,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:58:46,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:46,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 14:58:46,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:47,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890617169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:47,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:47,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-07 14:58:47,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722565989] [2021-10-07 14:58:47,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:58:47,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:47,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:58:47,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:58:47,117 INFO L87 Difference]: Start difference. First operand 85 states and 181 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 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) [2021-10-07 14:58:48,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:48,340 INFO L93 Difference]: Finished difference Result 109 states and 249 transitions. [2021-10-07 14:58:48,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:58:48,340 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 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 13 [2021-10-07 14:58:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:48,341 INFO L225 Difference]: With dead ends: 109 [2021-10-07 14:58:48,342 INFO L226 Difference]: Without dead ends: 109 [2021-10-07 14:58:48,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1609.0ms TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-10-07 14:58:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-07 14:58:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2021-10-07 14:58:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 2.2580645161290325) internal successors, (210), 94 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 210 transitions. [2021-10-07 14:58:48,346 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 210 transitions. Word has length 13 [2021-10-07 14:58:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:48,347 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 210 transitions. [2021-10-07 14:58:48,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 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) [2021-10-07 14:58:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 210 transitions. [2021-10-07 14:58:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:58:48,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:48,352 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:48,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-10-07 14:58:48,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:48,566 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:48,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1941636967, now seen corresponding path program 6 times [2021-10-07 14:58:48,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:48,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672542430] [2021-10-07 14:58:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:48,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:49,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:49,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672542430] [2021-10-07 14:58:49,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672542430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:49,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890941506] [2021-10-07 14:58:49,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:58:49,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:49,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:49,277 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) [2021-10-07 14:58:49,294 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 [2021-10-07 14:58:49,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 14:58:49,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:49,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-07 14:58:49,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:49,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 14:58:49,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 14:58:49,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 14:58:50,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:50,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890941506] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:50,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:50,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-07 14:58:50,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988578651] [2021-10-07 14:58:50,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 14:58:50,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:50,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 14:58:50,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:58:50,295 INFO L87 Difference]: Start difference. First operand 95 states and 210 transitions. Second operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2021-10-07 14:58:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:50,999 INFO L93 Difference]: Finished difference Result 109 states and 241 transitions. [2021-10-07 14:58:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:58:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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 13 [2021-10-07 14:58:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:51,000 INFO L225 Difference]: With dead ends: 109 [2021-10-07 14:58:51,001 INFO L226 Difference]: Without dead ends: 107 [2021-10-07 14:58:51,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 969.1ms TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2021-10-07 14:58:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-07 14:58:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2021-10-07 14:58:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 2.2580645161290325) internal successors, (210), 94 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 210 transitions. [2021-10-07 14:58:51,006 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 210 transitions. Word has length 13 [2021-10-07 14:58:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:51,007 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 210 transitions. [2021-10-07 14:58:51,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2021-10-07 14:58:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 210 transitions. [2021-10-07 14:58:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:58:51,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:51,008 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:51,050 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 [2021-10-07 14:58:51,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:51,209 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:51,210 INFO L82 PathProgramCache]: Analyzing trace with hash 395055354, now seen corresponding path program 5 times [2021-10-07 14:58:51,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:51,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756433359] [2021-10-07 14:58:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:51,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:51,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:51,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756433359] [2021-10-07 14:58:51,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756433359] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:51,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072692367] [2021-10-07 14:58:51,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:58:51,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:51,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:51,320 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) [2021-10-07 14:58:51,323 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 [2021-10-07 14:58:51,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 14:58:51,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:51,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 14:58:51,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:52,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072692367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:52,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:52,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-07 14:58:52,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362917166] [2021-10-07 14:58:52,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:58:52,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:58:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:58:52,076 INFO L87 Difference]: Start difference. First operand 95 states and 210 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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) [2021-10-07 14:58:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:52,334 INFO L93 Difference]: Finished difference Result 103 states and 218 transitions. [2021-10-07 14:58:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:58:52,335 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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 14 [2021-10-07 14:58:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:52,336 INFO L225 Difference]: With dead ends: 103 [2021-10-07 14:58:52,336 INFO L226 Difference]: Without dead ends: 82 [2021-10-07 14:58:52,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 357.8ms TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:58:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-07 14:58:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-10-07 14:58:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.3625) internal successors, (189), 81 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 189 transitions. [2021-10-07 14:58:52,341 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 189 transitions. Word has length 14 [2021-10-07 14:58:52,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:52,343 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 189 transitions. [2021-10-07 14:58:52,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 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) [2021-10-07 14:58:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 189 transitions. [2021-10-07 14:58:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:58:52,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:52,347 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:52,388 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 [2021-10-07 14:58:52,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:52,548 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:52,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:52,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1322962559, now seen corresponding path program 7 times [2021-10-07 14:58:52,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:52,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493522693] [2021-10-07 14:58:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:52,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:53,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:53,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493522693] [2021-10-07 14:58:53,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493522693] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:53,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228788771] [2021-10-07 14:58:53,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:58:53,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:53,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:53,295 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) [2021-10-07 14:58:53,296 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 [2021-10-07 14:58:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:53,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 14:58:53,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:58:54,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228788771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:54,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:54,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 19 [2021-10-07 14:58:54,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664168206] [2021-10-07 14:58:54,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 14:58:54,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 14:58:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:58:54,051 INFO L87 Difference]: Start difference. First operand 82 states and 189 transitions. Second operand has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 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) [2021-10-07 14:58:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:55,156 INFO L93 Difference]: Finished difference Result 112 states and 243 transitions. [2021-10-07 14:58:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:58:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 14:58:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:55,157 INFO L225 Difference]: With dead ends: 112 [2021-10-07 14:58:55,157 INFO L226 Difference]: Without dead ends: 108 [2021-10-07 14:58:55,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1281.1ms TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 14:58:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-07 14:58:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 72. [2021-10-07 14:58:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 2.2857142857142856) internal successors, (160), 71 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 160 transitions. [2021-10-07 14:58:55,161 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 160 transitions. Word has length 14 [2021-10-07 14:58:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:55,162 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 160 transitions. [2021-10-07 14:58:55,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.4) internal successors, (28), 20 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) [2021-10-07 14:58:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 160 transitions. [2021-10-07 14:58:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:58:55,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:55,163 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:55,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-07 14:58:55,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:55,372 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:55,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:55,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1900993518, now seen corresponding path program 6 times [2021-10-07 14:58:55,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:55,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030885645] [2021-10-07 14:58:55,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:55,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:55,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:55,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030885645] [2021-10-07 14:58:55,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030885645] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:55,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165025037] [2021-10-07 14:58:55,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:58:55,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:55,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:55,853 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) [2021-10-07 14:58:55,866 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 [2021-10-07 14:58:56,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 14:58:56,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:56,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-07 14:58:56,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:56,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 14:58:56,446 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 14:58:56,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-10-07 14:58:56,609 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:58:56,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-10-07 14:58:56,786 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:58:56,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-10-07 14:58:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:57,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165025037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:57,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:57,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-07 14:58:57,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629894227] [2021-10-07 14:58:57,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 14:58:57,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:57,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 14:58:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:58:57,644 INFO L87 Difference]: Start difference. First operand 72 states and 160 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) [2021-10-07 14:58:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:59,326 INFO L93 Difference]: Finished difference Result 96 states and 204 transitions. [2021-10-07 14:58:59,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:58:59,327 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 15 [2021-10-07 14:58:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:59,329 INFO L225 Difference]: With dead ends: 96 [2021-10-07 14:58:59,329 INFO L226 Difference]: Without dead ends: 92 [2021-10-07 14:58:59,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2011.1ms TimeCoverageRelationStatistics Valid=159, Invalid=1323, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 14:58:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-07 14:58:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2021-10-07 14:58:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 2.2125) internal successors, (177), 81 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 177 transitions. [2021-10-07 14:58:59,334 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 177 transitions. Word has length 15 [2021-10-07 14:58:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:59,334 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 177 transitions. [2021-10-07 14:58:59,334 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) [2021-10-07 14:58:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 177 transitions. [2021-10-07 14:58:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:58:59,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:59,335 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:58:59,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-10-07 14:58:59,542 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,SelfDestructingSolverStorable22 [2021-10-07 14:58:59,543 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:58:59,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:59,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1900993515, now seen corresponding path program 8 times [2021-10-07 14:58:59,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:59,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264253454] [2021-10-07 14:58:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:59,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:00,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:00,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264253454] [2021-10-07 14:59:00,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264253454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:00,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164261653] [2021-10-07 14:59:00,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:00,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:00,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:00,223 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) [2021-10-07 14:59:00,225 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 [2021-10-07 14:59:00,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:00,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:00,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-07 14:59:00,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:00,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:59:00,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 121 [2021-10-07 14:59:00,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 14:59:00,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 14:59:00,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 14:59:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:01,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164261653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:01,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:01,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-07 14:59:01,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747112378] [2021-10-07 14:59:01,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 14:59:01,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 14:59:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:59:01,561 INFO L87 Difference]: Start difference. First operand 82 states and 177 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) [2021-10-07 14:59:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:02,813 INFO L93 Difference]: Finished difference Result 84 states and 180 transitions. [2021-10-07 14:59:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:59:02,814 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 15 [2021-10-07 14:59:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:02,815 INFO L225 Difference]: With dead ends: 84 [2021-10-07 14:59:02,815 INFO L226 Difference]: Without dead ends: 72 [2021-10-07 14:59:02,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1582.4ms TimeCoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 14:59:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-07 14:59:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-10-07 14:59:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 2.242424242424242) internal successors, (148), 67 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 148 transitions. [2021-10-07 14:59:02,818 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 148 transitions. Word has length 15 [2021-10-07 14:59:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:02,819 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 148 transitions. [2021-10-07 14:59:02,819 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) [2021-10-07 14:59:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 148 transitions. [2021-10-07 14:59:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:59:02,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:02,819 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:02,846 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 [2021-10-07 14:59:03,020 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,SelfDestructingSolverStorable23 [2021-10-07 14:59:03,021 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:03,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:03,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1900878198, now seen corresponding path program 7 times [2021-10-07 14:59:03,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:03,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223817610] [2021-10-07 14:59:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:03,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:03,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:03,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223817610] [2021-10-07 14:59:03,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223817610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:03,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073935244] [2021-10-07 14:59:03,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:59:03,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:03,436 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) [2021-10-07 14:59:03,459 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 [2021-10-07 14:59:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:03,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-07 14:59:03,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:03,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 14:59:04,056 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 14:59:04,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-10-07 14:59:04,203 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:59:04,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-10-07 14:59:04,371 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:59:04,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-10-07 14:59:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:05,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073935244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:05,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:05,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-07 14:59:05,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915251680] [2021-10-07 14:59:05,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 14:59:05,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:05,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 14:59:05,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:59:05,152 INFO L87 Difference]: Start difference. First operand 68 states and 148 transitions. Second operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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) [2021-10-07 14:59:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:08,488 INFO L93 Difference]: Finished difference Result 245 states and 556 transitions. [2021-10-07 14:59:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 14:59:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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 15 [2021-10-07 14:59:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:08,491 INFO L225 Difference]: With dead ends: 245 [2021-10-07 14:59:08,491 INFO L226 Difference]: Without dead ends: 237 [2021-10-07 14:59:08,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 3131.6ms TimeCoverageRelationStatistics Valid=372, Invalid=2280, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 14:59:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-07 14:59:08,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 132. [2021-10-07 14:59:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 2.8153846153846156) internal successors, (366), 131 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) [2021-10-07 14:59:08,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 366 transitions. [2021-10-07 14:59:08,500 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 366 transitions. Word has length 15 [2021-10-07 14:59:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:08,500 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 366 transitions. [2021-10-07 14:59:08,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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) [2021-10-07 14:59:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 366 transitions. [2021-10-07 14:59:08,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:59:08,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:08,501 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:08,538 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 [2021-10-07 14:59:08,714 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,SelfDestructingSolverStorable24 [2021-10-07 14:59:08,715 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:08,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1900878195, now seen corresponding path program 9 times [2021-10-07 14:59:08,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:08,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094990674] [2021-10-07 14:59:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:08,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:09,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:09,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094990674] [2021-10-07 14:59:09,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094990674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:09,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787326351] [2021-10-07 14:59:09,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:09,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:09,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:09,291 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) [2021-10-07 14:59:09,315 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 [2021-10-07 14:59:09,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 14:59:09,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:09,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 14:59:09,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 14:59:10,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787326351] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:10,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:10,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 18 [2021-10-07 14:59:10,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287164316] [2021-10-07 14:59:10,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 14:59:10,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 14:59:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:59:10,349 INFO L87 Difference]: Start difference. First operand 132 states and 366 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:12,288 INFO L93 Difference]: Finished difference Result 244 states and 576 transitions. [2021-10-07 14:59:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 14:59:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 14:59:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:12,291 INFO L225 Difference]: With dead ends: 244 [2021-10-07 14:59:12,292 INFO L226 Difference]: Without dead ends: 222 [2021-10-07 14:59:12,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1777.2ms TimeCoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 14:59:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-07 14:59:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 130. [2021-10-07 14:59:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 128 states have (on average 2.8671875) internal successors, (367), 129 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 367 transitions. [2021-10-07 14:59:12,300 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 367 transitions. Word has length 15 [2021-10-07 14:59:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:12,301 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 367 transitions. [2021-10-07 14:59:12,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 367 transitions. [2021-10-07 14:59:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:59:12,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:12,302 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:12,334 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 [2021-10-07 14:59:12,515 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,SelfDestructingSolverStorable25 [2021-10-07 14:59:12,516 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:12,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:12,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1897303278, now seen corresponding path program 8 times [2021-10-07 14:59:12,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:12,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153761821] [2021-10-07 14:59:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:12,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:12,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:12,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153761821] [2021-10-07 14:59:12,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153761821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:12,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648828558] [2021-10-07 14:59:12,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:12,827 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:12,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:12,829 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) [2021-10-07 14:59:12,843 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 [2021-10-07 14:59:13,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:13,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:13,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-07 14:59:13,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:13,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:59:13,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 97 [2021-10-07 14:59:13,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 14:59:13,505 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 14:59:13,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-10-07 14:59:13,652 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 14:59:13,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 56 [2021-10-07 14:59:13,814 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:59:13,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-10-07 14:59:13,953 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 14:59:13,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-10-07 14:59:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:14,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648828558] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:14,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:14,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-07 14:59:14,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949479136] [2021-10-07 14:59:14,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 14:59:14,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:14,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 14:59:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:59:14,761 INFO L87 Difference]: Start difference. First operand 130 states and 367 transitions. Second operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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) [2021-10-07 14:59:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:17,029 INFO L93 Difference]: Finished difference Result 289 states and 740 transitions. [2021-10-07 14:59:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:59:17,032 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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 15 [2021-10-07 14:59:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:17,035 INFO L225 Difference]: With dead ends: 289 [2021-10-07 14:59:17,035 INFO L226 Difference]: Without dead ends: 283 [2021-10-07 14:59:17,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2235.4ms TimeCoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 14:59:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-07 14:59:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 168. [2021-10-07 14:59:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 166 states have (on average 3.0240963855421685) internal successors, (502), 167 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 502 transitions. [2021-10-07 14:59:17,047 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 502 transitions. Word has length 15 [2021-10-07 14:59:17,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:17,047 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 502 transitions. [2021-10-07 14:59:17,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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) [2021-10-07 14:59:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 502 transitions. [2021-10-07 14:59:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:59:17,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:17,049 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:17,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-07 14:59:17,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-07 14:59:17,263 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:17,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:17,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1897303275, now seen corresponding path program 10 times [2021-10-07 14:59:17,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:17,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320012619] [2021-10-07 14:59:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:17,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:17,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:17,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320012619] [2021-10-07 14:59:17,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320012619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:17,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592063431] [2021-10-07 14:59:17,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:17,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:17,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:17,986 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) [2021-10-07 14:59:17,987 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 [2021-10-07 14:59:18,504 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:18,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:18,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-07 14:59:18,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:18,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 45 [2021-10-07 14:59:18,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 14:59:18,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 14:59:18,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 14:59:18,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 14:59:18,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 14:59:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:19,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592063431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:19,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:19,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-07 14:59:19,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127866914] [2021-10-07 14:59:19,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 14:59:19,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:19,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 14:59:19,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:59:19,373 INFO L87 Difference]: Start difference. First operand 168 states and 502 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) [2021-10-07 14:59:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:20,965 INFO L93 Difference]: Finished difference Result 189 states and 544 transitions. [2021-10-07 14:59:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 14:59:20,969 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 15 [2021-10-07 14:59:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:20,971 INFO L225 Difference]: With dead ends: 189 [2021-10-07 14:59:20,971 INFO L226 Difference]: Without dead ends: 175 [2021-10-07 14:59:20,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1758.8ms TimeCoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 14:59:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-07 14:59:20,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-10-07 14:59:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 2.994186046511628) internal successors, (515), 173 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 515 transitions. [2021-10-07 14:59:20,980 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 515 transitions. Word has length 15 [2021-10-07 14:59:20,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:20,980 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 515 transitions. [2021-10-07 14:59:20,980 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) [2021-10-07 14:59:20,980 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 515 transitions. [2021-10-07 14:59:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:59:20,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:20,981 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:21,022 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 [2021-10-07 14:59:21,195 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,SelfDestructingSolverStorable27 [2021-10-07 14:59:21,196 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:21,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1937715070, now seen corresponding path program 9 times [2021-10-07 14:59:21,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:21,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547666490] [2021-10-07 14:59:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:21,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:22,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:22,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547666490] [2021-10-07 14:59:22,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547666490] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:22,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181508000] [2021-10-07 14:59:22,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:22,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:22,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:22,298 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) [2021-10-07 14:59:22,301 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 [2021-10-07 14:59:22,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 14:59:22,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:22,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 14:59:22,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-07 14:59:23,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181508000] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:23,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:23,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2021-10-07 14:59:23,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132126905] [2021-10-07 14:59:23,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:59:23,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:59:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:59:23,240 INFO L87 Difference]: Start difference. First operand 174 states and 515 transitions. Second operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-07 14:59:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:24,070 INFO L93 Difference]: Finished difference Result 206 states and 576 transitions. [2021-10-07 14:59:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:59:24,074 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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 15 [2021-10-07 14:59:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:24,076 INFO L225 Difference]: With dead ends: 206 [2021-10-07 14:59:24,076 INFO L226 Difference]: Without dead ends: 206 [2021-10-07 14:59:24,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 976.7ms TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:59:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-07 14:59:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 174. [2021-10-07 14:59:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 2.947674418604651) internal successors, (507), 173 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 507 transitions. [2021-10-07 14:59:24,085 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 507 transitions. Word has length 15 [2021-10-07 14:59:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:24,085 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 507 transitions. [2021-10-07 14:59:24,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-07 14:59:24,085 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 507 transitions. [2021-10-07 14:59:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:59:24,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:24,086 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:24,123 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 [2021-10-07 14:59:24,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-07 14:59:24,301 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1313141101, now seen corresponding path program 11 times [2021-10-07 14:59:24,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:24,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062270469] [2021-10-07 14:59:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:24,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:24,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:24,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062270469] [2021-10-07 14:59:24,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062270469] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:24,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894540277] [2021-10-07 14:59:24,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:24,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:24,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:24,425 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) [2021-10-07 14:59:24,436 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 [2021-10-07 14:59:25,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 14:59:25,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:25,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 14:59:25,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:25,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894540277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:25,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:25,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2021-10-07 14:59:25,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080086910] [2021-10-07 14:59:25,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:59:25,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:25,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:59:25,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:59:25,703 INFO L87 Difference]: Start difference. First operand 174 states and 507 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 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) [2021-10-07 14:59:25,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:25,966 INFO L93 Difference]: Finished difference Result 102 states and 227 transitions. [2021-10-07 14:59:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:59:25,966 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 14:59:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:25,967 INFO L225 Difference]: With dead ends: 102 [2021-10-07 14:59:25,967 INFO L226 Difference]: Without dead ends: 73 [2021-10-07 14:59:25,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 387.3ms TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2021-10-07 14:59:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-07 14:59:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-07 14:59:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 2.591549295774648) internal successors, (184), 72 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 184 transitions. [2021-10-07 14:59:25,974 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 184 transitions. Word has length 16 [2021-10-07 14:59:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:25,974 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 184 transitions. [2021-10-07 14:59:25,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 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) [2021-10-07 14:59:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 184 transitions. [2021-10-07 14:59:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:59:25,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:25,977 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:26,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:26,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:26,191 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:26,191 INFO L82 PathProgramCache]: Analyzing trace with hash -60374278, now seen corresponding path program 10 times [2021-10-07 14:59:26,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:26,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810670887] [2021-10-07 14:59:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:26,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:26,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:26,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810670887] [2021-10-07 14:59:26,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810670887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:26,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147508477] [2021-10-07 14:59:26,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:26,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:26,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:26,767 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) [2021-10-07 14:59:26,786 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 [2021-10-07 14:59:27,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:27,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 14:59:27,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:27,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147508477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:27,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:27,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-07 14:59:27,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89835145] [2021-10-07 14:59:27,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 14:59:27,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:27,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 14:59:27,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2021-10-07 14:59:27,882 INFO L87 Difference]: Start difference. First operand 73 states and 184 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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) [2021-10-07 14:59:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:29,544 INFO L93 Difference]: Finished difference Result 205 states and 499 transitions. [2021-10-07 14:59:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 14:59:29,545 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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 16 [2021-10-07 14:59:29,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:29,548 INFO L225 Difference]: With dead ends: 205 [2021-10-07 14:59:29,548 INFO L226 Difference]: Without dead ends: 201 [2021-10-07 14:59:29,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1644.8ms TimeCoverageRelationStatistics Valid=259, Invalid=1633, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 14:59:29,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-07 14:59:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 157. [2021-10-07 14:59:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 155 states have (on average 2.729032258064516) internal successors, (423), 156 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) [2021-10-07 14:59:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 423 transitions. [2021-10-07 14:59:29,556 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 423 transitions. Word has length 16 [2021-10-07 14:59:29,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:29,556 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 423 transitions. [2021-10-07 14:59:29,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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) [2021-10-07 14:59:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 423 transitions. [2021-10-07 14:59:29,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:59:29,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:29,557 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:29,593 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 [2021-10-07 14:59:29,770 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,SelfDestructingSolverStorable30 [2021-10-07 14:59:29,771 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:29,772 INFO L82 PathProgramCache]: Analyzing trace with hash -60374275, now seen corresponding path program 12 times [2021-10-07 14:59:29,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:29,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220859914] [2021-10-07 14:59:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:29,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:31,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:31,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220859914] [2021-10-07 14:59:31,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220859914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:31,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548337637] [2021-10-07 14:59:31,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:59:31,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:31,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:31,004 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) [2021-10-07 14:59:31,005 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 [2021-10-07 14:59:31,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 14:59:31,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:31,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 14:59:31,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:32,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548337637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:32,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:32,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2021-10-07 14:59:32,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986989656] [2021-10-07 14:59:32,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 14:59:32,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 14:59:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2021-10-07 14:59:32,295 INFO L87 Difference]: Start difference. First operand 157 states and 423 transitions. Second operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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) [2021-10-07 14:59:33,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:33,911 INFO L93 Difference]: Finished difference Result 167 states and 426 transitions. [2021-10-07 14:59:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:59:33,911 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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 16 [2021-10-07 14:59:33,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:33,913 INFO L225 Difference]: With dead ends: 167 [2021-10-07 14:59:33,913 INFO L226 Difference]: Without dead ends: 155 [2021-10-07 14:59:33,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1880.4ms TimeCoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:59:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-07 14:59:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-10-07 14:59:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 2.629139072847682) internal successors, (397), 152 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 397 transitions. [2021-10-07 14:59:33,920 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 397 transitions. Word has length 16 [2021-10-07 14:59:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:33,920 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 397 transitions. [2021-10-07 14:59:33,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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) [2021-10-07 14:59:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 397 transitions. [2021-10-07 14:59:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:59:33,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:33,921 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:33,929 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 [2021-10-07 14:59:34,129 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,SelfDestructingSolverStorable31 [2021-10-07 14:59:34,129 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:34,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:34,130 INFO L82 PathProgramCache]: Analyzing trace with hash -56684035, now seen corresponding path program 13 times [2021-10-07 14:59:34,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:34,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398900908] [2021-10-07 14:59:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:34,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:35,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:35,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398900908] [2021-10-07 14:59:35,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398900908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:35,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107465596] [2021-10-07 14:59:35,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:59:35,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:35,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:35,554 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) [2021-10-07 14:59:35,556 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 [2021-10-07 14:59:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:36,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 14:59:36,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:36,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107465596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:36,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:36,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-07 14:59:36,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022810256] [2021-10-07 14:59:36,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 14:59:36,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:36,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 14:59:36,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2021-10-07 14:59:36,880 INFO L87 Difference]: Start difference. First operand 153 states and 397 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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) [2021-10-07 14:59:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:38,658 INFO L93 Difference]: Finished difference Result 215 states and 528 transitions. [2021-10-07 14:59:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 14:59:38,659 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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 16 [2021-10-07 14:59:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:38,661 INFO L225 Difference]: With dead ends: 215 [2021-10-07 14:59:38,661 INFO L226 Difference]: Without dead ends: 213 [2021-10-07 14:59:38,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1927.8ms TimeCoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 14:59:38,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-07 14:59:38,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 161. [2021-10-07 14:59:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 2.6855345911949686) internal successors, (427), 160 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 427 transitions. [2021-10-07 14:59:38,670 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 427 transitions. Word has length 16 [2021-10-07 14:59:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:38,670 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 427 transitions. [2021-10-07 14:59:38,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 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) [2021-10-07 14:59:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 427 transitions. [2021-10-07 14:59:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:59:38,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:38,673 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:38,707 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 [2021-10-07 14:59:38,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:38,888 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:38,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1871721083, now seen corresponding path program 14 times [2021-10-07 14:59:38,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:38,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357358351] [2021-10-07 14:59:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:38,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:39,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:39,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357358351] [2021-10-07 14:59:39,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357358351] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:39,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418421946] [2021-10-07 14:59:39,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:39,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:39,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:39,877 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) [2021-10-07 14:59:39,877 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 [2021-10-07 14:59:40,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:40,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:40,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 14:59:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:41,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418421946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:41,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:41,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2021-10-07 14:59:41,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475999343] [2021-10-07 14:59:41,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 14:59:41,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 14:59:41,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2021-10-07 14:59:41,594 INFO L87 Difference]: Start difference. First operand 161 states and 427 transitions. Second operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 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) [2021-10-07 14:59:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:45,957 INFO L93 Difference]: Finished difference Result 317 states and 791 transitions. [2021-10-07 14:59:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 14:59:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 14:59:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:45,961 INFO L225 Difference]: With dead ends: 317 [2021-10-07 14:59:45,961 INFO L226 Difference]: Without dead ends: 317 [2021-10-07 14:59:45,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 3986.2ms TimeCoverageRelationStatistics Valid=367, Invalid=3055, Unknown=0, NotChecked=0, Total=3422 [2021-10-07 14:59:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-10-07 14:59:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 209. [2021-10-07 14:59:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 2.8357487922705316) internal successors, (587), 208 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) [2021-10-07 14:59:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 587 transitions. [2021-10-07 14:59:45,972 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 587 transitions. Word has length 17 [2021-10-07 14:59:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:45,972 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 587 transitions. [2021-10-07 14:59:45,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 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) [2021-10-07 14:59:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 587 transitions. [2021-10-07 14:59:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:59:45,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:45,973 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:46,017 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 [2021-10-07 14:59:46,187 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,SelfDestructingSolverStorable33 [2021-10-07 14:59:46,188 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:46,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:46,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1871605763, now seen corresponding path program 15 times [2021-10-07 14:59:46,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:46,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261840513] [2021-10-07 14:59:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:46,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:46,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:46,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261840513] [2021-10-07 14:59:46,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261840513] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:46,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155658355] [2021-10-07 14:59:46,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:46,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:46,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:46,887 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) [2021-10-07 14:59:46,888 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 [2021-10-07 14:59:47,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 14:59:47,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:47,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 14:59:47,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:48,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155658355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:48,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:48,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 14:59:48,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106779058] [2021-10-07 14:59:48,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 14:59:48,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:48,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 14:59:48,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-10-07 14:59:48,774 INFO L87 Difference]: Start difference. First operand 209 states and 587 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 14:59:50,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:50,603 INFO L93 Difference]: Finished difference Result 303 states and 758 transitions. [2021-10-07 14:59:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 14:59:50,604 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 14:59:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:50,606 INFO L225 Difference]: With dead ends: 303 [2021-10-07 14:59:50,606 INFO L226 Difference]: Without dead ends: 303 [2021-10-07 14:59:50,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1887.7ms TimeCoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2021-10-07 14:59:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-07 14:59:50,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 209. [2021-10-07 14:59:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 2.7681159420289854) internal successors, (573), 208 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 573 transitions. [2021-10-07 14:59:50,616 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 573 transitions. Word has length 17 [2021-10-07 14:59:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:50,617 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 573 transitions. [2021-10-07 14:59:50,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 14:59:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 573 transitions. [2021-10-07 14:59:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:59:50,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:50,618 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:50,653 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 [2021-10-07 14:59:50,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:50,833 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:50,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:50,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1868030846, now seen corresponding path program 11 times [2021-10-07 14:59:50,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:50,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474930498] [2021-10-07 14:59:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:50,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:51,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:51,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474930498] [2021-10-07 14:59:51,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474930498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:51,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192937860] [2021-10-07 14:59:51,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:51,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:51,846 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) [2021-10-07 14:59:51,847 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 [2021-10-07 14:59:52,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 14:59:52,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:52,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 14:59:52,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:52,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 14:59:52,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 135 [2021-10-07 14:59:52,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 14:59:52,990 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 14:59:52,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 49 [2021-10-07 14:59:53,181 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 14:59:53,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-10-07 14:59:53,366 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 14:59:53,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-10-07 14:59:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:54,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192937860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:54,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:54,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 14:59:54,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557013882] [2021-10-07 14:59:54,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 14:59:54,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 14:59:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2021-10-07 14:59:54,469 INFO L87 Difference]: Start difference. First operand 209 states and 573 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) [2021-10-07 14:59:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:58,990 INFO L93 Difference]: Finished difference Result 521 states and 1313 transitions. [2021-10-07 14:59:58,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-07 14:59:58,991 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 17 [2021-10-07 14:59:58,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:58,994 INFO L225 Difference]: With dead ends: 521 [2021-10-07 14:59:58,994 INFO L226 Difference]: Without dead ends: 491 [2021-10-07 14:59:58,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 3955.7ms TimeCoverageRelationStatistics Valid=417, Invalid=3365, Unknown=0, NotChecked=0, Total=3782 [2021-10-07 14:59:58,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-10-07 14:59:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 291. [2021-10-07 14:59:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 3.01038062283737) internal successors, (870), 290 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 870 transitions. [2021-10-07 14:59:59,009 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 870 transitions. Word has length 17 [2021-10-07 14:59:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:59,009 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 870 transitions. [2021-10-07 14:59:59,009 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) [2021-10-07 14:59:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 870 transitions. [2021-10-07 14:59:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:59:59,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:59,010 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:59,041 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 [2021-10-07 14:59:59,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:59,225 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 14:59:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1868030843, now seen corresponding path program 16 times [2021-10-07 14:59:59,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:59,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603779002] [2021-10-07 14:59:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:59,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:00,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:00,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603779002] [2021-10-07 15:00:00,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603779002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:00,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650097106] [2021-10-07 15:00:00,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:00:00,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:00,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:00,180 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) [2021-10-07 15:00:00,181 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 [2021-10-07 15:00:01,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:00:01,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:01,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:00:01,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:01,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 67 [2021-10-07 15:00:01,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-07 15:00:01,322 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 15:00:01,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2021-10-07 15:00:01,490 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-07 15:00:01,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 54 [2021-10-07 15:00:01,681 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:00:01,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-10-07 15:00:01,855 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:00:01,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2021-10-07 15:00:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:02,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650097106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:02,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:02,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:00:02,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545219199] [2021-10-07 15:00:02,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:00:02,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:00:02,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:00:02,899 INFO L87 Difference]: Start difference. First operand 291 states and 870 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) [2021-10-07 15:00:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:07,237 INFO L93 Difference]: Finished difference Result 459 states and 1222 transitions. [2021-10-07 15:00:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 15:00:07,238 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 17 [2021-10-07 15:00:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:07,241 INFO L225 Difference]: With dead ends: 459 [2021-10-07 15:00:07,241 INFO L226 Difference]: Without dead ends: 433 [2021-10-07 15:00:07,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 4124.3ms TimeCoverageRelationStatistics Valid=419, Invalid=3363, Unknown=0, NotChecked=0, Total=3782 [2021-10-07 15:00:07,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-10-07 15:00:07,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 311. [2021-10-07 15:00:07,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 309 states have (on average 2.912621359223301) internal successors, (900), 310 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 900 transitions. [2021-10-07 15:00:07,253 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 900 transitions. Word has length 17 [2021-10-07 15:00:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:07,253 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 900 transitions. [2021-10-07 15:00:07,253 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) [2021-10-07 15:00:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 900 transitions. [2021-10-07 15:00:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:00:07,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:07,254 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:07,297 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 [2021-10-07 15:00:07,467 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,SelfDestructingSolverStorable36 [2021-10-07 15:00:07,469 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:07,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1757208326, now seen corresponding path program 12 times [2021-10-07 15:00:07,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:07,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404401783] [2021-10-07 15:00:07,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:07,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:08,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:08,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404401783] [2021-10-07 15:00:08,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404401783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:08,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727513358] [2021-10-07 15:00:08,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:00:08,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:08,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:08,178 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) [2021-10-07 15:00:08,196 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 [2021-10-07 15:00:09,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:00:09,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:09,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:00:09,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:09,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727513358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:09,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:09,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 15:00:09,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271475798] [2021-10-07 15:00:09,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:00:09,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:09,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:00:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:00:09,877 INFO L87 Difference]: Start difference. First operand 311 states and 900 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 15:00:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:12,924 INFO L93 Difference]: Finished difference Result 629 states and 1637 transitions. [2021-10-07 15:00:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:00:12,924 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:00:12,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:12,928 INFO L225 Difference]: With dead ends: 629 [2021-10-07 15:00:12,929 INFO L226 Difference]: Without dead ends: 609 [2021-10-07 15:00:12,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2294.3ms TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 15:00:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-10-07 15:00:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 387. [2021-10-07 15:00:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 385 states have (on average 3.0441558441558443) internal successors, (1172), 386 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1172 transitions. [2021-10-07 15:00:12,946 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1172 transitions. Word has length 17 [2021-10-07 15:00:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:12,946 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 1172 transitions. [2021-10-07 15:00:12,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 15:00:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1172 transitions. [2021-10-07 15:00:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:00:12,947 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:12,947 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:12,956 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 [2021-10-07 15:00:13,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-07 15:00:13,157 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:13,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1757089286, now seen corresponding path program 13 times [2021-10-07 15:00:13,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:13,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448250711] [2021-10-07 15:00:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:13,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:13,867 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:13,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:13,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448250711] [2021-10-07 15:00:13,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448250711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:13,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068280748] [2021-10-07 15:00:13,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:00:13,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:13,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:13,869 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) [2021-10-07 15:00:13,872 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 [2021-10-07 15:00:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:14,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:00:14,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:15,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068280748] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:15,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:15,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 15:00:15,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376168084] [2021-10-07 15:00:15,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:00:15,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:15,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:00:15,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:00:15,726 INFO L87 Difference]: Start difference. First operand 387 states and 1172 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 15:00:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:17,286 INFO L93 Difference]: Finished difference Result 461 states and 1363 transitions. [2021-10-07 15:00:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:00:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:00:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:17,289 INFO L225 Difference]: With dead ends: 461 [2021-10-07 15:00:17,289 INFO L226 Difference]: Without dead ends: 461 [2021-10-07 15:00:17,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1736.6ms TimeCoverageRelationStatistics Valid=189, Invalid=1533, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:00:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-10-07 15:00:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 403. [2021-10-07 15:00:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 3.0972568578553616) internal successors, (1242), 402 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1242 transitions. [2021-10-07 15:00:17,305 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1242 transitions. Word has length 17 [2021-10-07 15:00:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:17,306 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1242 transitions. [2021-10-07 15:00:17,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 15:00:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1242 transitions. [2021-10-07 15:00:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:00:17,307 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:17,307 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:17,349 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 [2021-10-07 15:00:17,521 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,SelfDestructingSolverStorable38 [2021-10-07 15:00:17,522 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:17,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:17,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1757089283, now seen corresponding path program 17 times [2021-10-07 15:00:17,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:17,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271411260] [2021-10-07 15:00:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:17,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:18,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:18,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271411260] [2021-10-07 15:00:18,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271411260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:18,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345812039] [2021-10-07 15:00:18,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:00:18,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:18,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:18,234 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) [2021-10-07 15:00:18,241 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 [2021-10-07 15:00:19,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:00:19,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:00:19,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:20,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345812039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:20,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:20,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 15:00:20,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305365939] [2021-10-07 15:00:20,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:00:20,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:00:20,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:00:20,124 INFO L87 Difference]: Start difference. First operand 403 states and 1242 transitions. Second operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 15:00:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:21,255 INFO L93 Difference]: Finished difference Result 457 states and 1341 transitions. [2021-10-07 15:00:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:00:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:00:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:21,258 INFO L225 Difference]: With dead ends: 457 [2021-10-07 15:00:21,258 INFO L226 Difference]: Without dead ends: 457 [2021-10-07 15:00:21,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1387.2ms TimeCoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:00:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-10-07 15:00:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 401. [2021-10-07 15:00:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 399 states have (on average 3.080200501253133) internal successors, (1229), 400 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1229 transitions. [2021-10-07 15:00:21,273 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1229 transitions. Word has length 17 [2021-10-07 15:00:21,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:21,273 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 1229 transitions. [2021-10-07 15:00:21,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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) [2021-10-07 15:00:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1229 transitions. [2021-10-07 15:00:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:00:21,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:21,275 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:21,315 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 [2021-10-07 15:00:21,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-07 15:00:21,489 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:21,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1164362634, now seen corresponding path program 14 times [2021-10-07 15:00:21,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:21,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764116083] [2021-10-07 15:00:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:21,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:23,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:23,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764116083] [2021-10-07 15:00:23,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764116083] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:23,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552024605] [2021-10-07 15:00:23,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:00:23,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:23,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:23,117 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) [2021-10-07 15:00:23,118 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 [2021-10-07 15:00:24,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:00:24,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:24,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:00:24,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:00:24,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552024605] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:24,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:24,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-07 15:00:24,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384338484] [2021-10-07 15:00:24,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:00:24,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:00:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:00:24,822 INFO L87 Difference]: Start difference. First operand 401 states and 1229 transitions. Second operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 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) [2021-10-07 15:00:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:27,455 INFO L93 Difference]: Finished difference Result 555 states and 1593 transitions. [2021-10-07 15:00:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:00:27,456 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:00:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:27,460 INFO L225 Difference]: With dead ends: 555 [2021-10-07 15:00:27,460 INFO L226 Difference]: Without dead ends: 539 [2021-10-07 15:00:27,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2992.7ms TimeCoverageRelationStatistics Valid=235, Invalid=1745, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:00:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-10-07 15:00:27,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 431. [2021-10-07 15:00:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 429 states have (on average 3.0046620046620047) internal successors, (1289), 430 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:27,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1289 transitions. [2021-10-07 15:00:27,475 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1289 transitions. Word has length 17 [2021-10-07 15:00:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:27,475 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 1289 transitions. [2021-10-07 15:00:27,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 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) [2021-10-07 15:00:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1289 transitions. [2021-10-07 15:00:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:00:27,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:27,476 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:27,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-07 15:00:27,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:27,690 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:27,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1167937554, now seen corresponding path program 15 times [2021-10-07 15:00:27,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:27,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847392890] [2021-10-07 15:00:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:27,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:33,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:33,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847392890] [2021-10-07 15:00:33,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847392890] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:33,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463361731] [2021-10-07 15:00:33,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:00:33,942 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:33,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:33,943 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) [2021-10-07 15:00:33,944 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 [2021-10-07 15:00:35,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:00:35,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:35,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:00:35,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:00:35,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463361731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:35,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:35,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2021-10-07 15:00:35,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692778924] [2021-10-07 15:00:35,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:00:35,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:35,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:00:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:00:35,578 INFO L87 Difference]: Start difference. First operand 431 states and 1289 transitions. Second operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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) [2021-10-07 15:00:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:37,749 INFO L93 Difference]: Finished difference Result 497 states and 1424 transitions. [2021-10-07 15:00:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:00:37,749 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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 17 [2021-10-07 15:00:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:37,753 INFO L225 Difference]: With dead ends: 497 [2021-10-07 15:00:37,753 INFO L226 Difference]: Without dead ends: 497 [2021-10-07 15:00:37,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 2728.8ms TimeCoverageRelationStatistics Valid=151, Invalid=1109, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:00:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-10-07 15:00:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 427. [2021-10-07 15:00:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 425 states have (on average 2.9952941176470587) internal successors, (1273), 426 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1273 transitions. [2021-10-07 15:00:37,766 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1273 transitions. Word has length 17 [2021-10-07 15:00:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:37,766 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 1273 transitions. [2021-10-07 15:00:37,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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) [2021-10-07 15:00:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1273 transitions. [2021-10-07 15:00:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:00:37,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:37,768 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:37,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-07 15:00:37,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:37,982 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:37,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:37,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1167941274, now seen corresponding path program 16 times [2021-10-07 15:00:37,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:37,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394981468] [2021-10-07 15:00:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:37,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:38,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:38,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394981468] [2021-10-07 15:00:38,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394981468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:38,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318334635] [2021-10-07 15:00:38,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:00:38,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:38,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:38,713 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) [2021-10-07 15:00:38,715 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 [2021-10-07 15:00:39,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:00:39,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:00:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:00:40,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318334635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:40,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:40,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2021-10-07 15:00:40,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944052033] [2021-10-07 15:00:40,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:00:40,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:00:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:00:40,416 INFO L87 Difference]: Start difference. First operand 427 states and 1273 transitions. Second operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:41,700 INFO L93 Difference]: Finished difference Result 461 states and 1344 transitions. [2021-10-07 15:00:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:00:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 15:00:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:41,703 INFO L225 Difference]: With dead ends: 461 [2021-10-07 15:00:41,703 INFO L226 Difference]: Without dead ends: 453 [2021-10-07 15:00:41,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1593.2ms TimeCoverageRelationStatistics Valid=187, Invalid=1535, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:00:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-10-07 15:00:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 425. [2021-10-07 15:00:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 423 states have (on average 2.983451536643026) internal successors, (1262), 424 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1262 transitions. [2021-10-07 15:00:41,715 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1262 transitions. Word has length 17 [2021-10-07 15:00:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:41,716 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 1262 transitions. [2021-10-07 15:00:41,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1262 transitions. [2021-10-07 15:00:41,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:00:41,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:41,719 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:41,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:41,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:41,933 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:41,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2106185330, now seen corresponding path program 17 times [2021-10-07 15:00:41,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:41,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30356528] [2021-10-07 15:00:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:41,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:00:42,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:42,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30356528] [2021-10-07 15:00:42,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30356528] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:42,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686366181] [2021-10-07 15:00:42,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:00:42,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:42,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:42,080 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) [2021-10-07 15:00:42,082 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 [2021-10-07 15:00:43,097 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:00:43,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:43,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:00:43,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:00:43,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686366181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:43,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:43,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-07 15:00:43,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132177189] [2021-10-07 15:00:43,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:00:43,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:00:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:00:43,582 INFO L87 Difference]: Start difference. First operand 425 states and 1262 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 21 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) [2021-10-07 15:00:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:43,832 INFO L93 Difference]: Finished difference Result 275 states and 637 transitions. [2021-10-07 15:00:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 15:00:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 21 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 18 [2021-10-07 15:00:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:43,834 INFO L225 Difference]: With dead ends: 275 [2021-10-07 15:00:43,834 INFO L226 Difference]: Without dead ends: 255 [2021-10-07 15:00:43,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 389.8ms TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:00:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-07 15:00:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 215. [2021-10-07 15:00:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 2.352112676056338) internal successors, (501), 214 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:43,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 501 transitions. [2021-10-07 15:00:43,840 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 501 transitions. Word has length 18 [2021-10-07 15:00:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:43,841 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 501 transitions. [2021-10-07 15:00:43,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 21 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) [2021-10-07 15:00:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 501 transitions. [2021-10-07 15:00:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:00:43,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:43,842 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:43,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-10-07 15:00:44,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:44,058 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:44,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:44,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2106189174, now seen corresponding path program 18 times [2021-10-07 15:00:44,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:44,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60898523] [2021-10-07 15:00:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:44,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:44,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:44,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60898523] [2021-10-07 15:00:44,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60898523] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:44,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648745898] [2021-10-07 15:00:44,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:00:44,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:44,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:44,554 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) [2021-10-07 15:00:44,561 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 [2021-10-07 15:00:45,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:00:45,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:45,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:00:45,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:45,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:00:45,949 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:00:45,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:00:46,047 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:00:46,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-10-07 15:00:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:47,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648745898] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:47,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:47,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2021-10-07 15:00:47,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149190945] [2021-10-07 15:00:47,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:00:47,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:00:47,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:00:47,199 INFO L87 Difference]: Start difference. First operand 215 states and 501 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:00:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:50,489 INFO L93 Difference]: Finished difference Result 275 states and 626 transitions. [2021-10-07 15:00:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:00:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 18 [2021-10-07 15:00:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:50,491 INFO L225 Difference]: With dead ends: 275 [2021-10-07 15:00:50,491 INFO L226 Difference]: Without dead ends: 255 [2021-10-07 15:00:50,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 3551.0ms TimeCoverageRelationStatistics Valid=370, Invalid=2822, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 15:00:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-07 15:00:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 221. [2021-10-07 15:00:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 219 states have (on average 2.328767123287671) internal successors, (510), 220 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 510 transitions. [2021-10-07 15:00:50,498 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 510 transitions. Word has length 18 [2021-10-07 15:00:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:50,498 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 510 transitions. [2021-10-07 15:00:50,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:00:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 510 transitions. [2021-10-07 15:00:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:00:50,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:50,499 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:50,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:50,701 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,SelfDestructingSolverStorable44 [2021-10-07 15:00:50,702 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:50,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:50,702 INFO L82 PathProgramCache]: Analyzing trace with hash 2109764094, now seen corresponding path program 19 times [2021-10-07 15:00:50,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:50,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449508874] [2021-10-07 15:00:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:50,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:51,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:51,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449508874] [2021-10-07 15:00:51,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449508874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:51,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336603840] [2021-10-07 15:00:51,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:00:51,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:51,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:51,777 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) [2021-10-07 15:00:51,778 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 [2021-10-07 15:00:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:52,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-07 15:00:52,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:54,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336603840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:54,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:54,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-07 15:00:54,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105005346] [2021-10-07 15:00:54,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:00:54,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:00:54,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:00:54,088 INFO L87 Difference]: Start difference. First operand 221 states and 510 transitions. Second operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 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) [2021-10-07 15:00:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:55,664 INFO L93 Difference]: Finished difference Result 261 states and 598 transitions. [2021-10-07 15:00:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:00:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 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 18 [2021-10-07 15:00:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:55,666 INFO L225 Difference]: With dead ends: 261 [2021-10-07 15:00:55,666 INFO L226 Difference]: Without dead ends: 261 [2021-10-07 15:00:55,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1926.9ms TimeCoverageRelationStatistics Valid=249, Invalid=1821, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:00:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-07 15:00:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 221. [2021-10-07 15:00:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 219 states have (on average 2.328767123287671) internal successors, (510), 220 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 510 transitions. [2021-10-07 15:00:55,673 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 510 transitions. Word has length 18 [2021-10-07 15:00:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:55,673 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 510 transitions. [2021-10-07 15:00:55,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 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) [2021-10-07 15:00:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 510 transitions. [2021-10-07 15:00:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:00:55,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:55,674 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:55,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:55,883 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,SelfDestructingSolverStorable45 [2021-10-07 15:00:55,883 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:00:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:55,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2109764097, now seen corresponding path program 18 times [2021-10-07 15:00:55,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:55,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041639253] [2021-10-07 15:00:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:55,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:57,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:57,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041639253] [2021-10-07 15:00:57,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041639253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:57,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728986341] [2021-10-07 15:00:57,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:00:57,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:57,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:57,067 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) [2021-10-07 15:00:57,068 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 [2021-10-07 15:00:58,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:00:58,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:58,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-07 15:00:58,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:58,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:00:58,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:00:58,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:00:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:59,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728986341] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:59,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:59,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2021-10-07 15:00:59,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602800905] [2021-10-07 15:00:59,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:00:59,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:00:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:00:59,573 INFO L87 Difference]: Start difference. First operand 221 states and 510 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:01,410 INFO L93 Difference]: Finished difference Result 261 states and 590 transitions. [2021-10-07 15:01:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:01:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 18 [2021-10-07 15:01:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:01,413 INFO L225 Difference]: With dead ends: 261 [2021-10-07 15:01:01,413 INFO L226 Difference]: Without dead ends: 241 [2021-10-07 15:01:01,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2245.4ms TimeCoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:01:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-10-07 15:01:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 225. [2021-10-07 15:01:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 2.3408071748878925) internal successors, (522), 224 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 522 transitions. [2021-10-07 15:01:01,422 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 522 transitions. Word has length 18 [2021-10-07 15:01:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:01,422 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 522 transitions. [2021-10-07 15:01:01,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 522 transitions. [2021-10-07 15:01:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:01,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:01,423 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:01,459 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 [2021-10-07 15:01:01,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:01,639 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash 2109883134, now seen corresponding path program 20 times [2021-10-07 15:01:01,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:01,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044639198] [2021-10-07 15:01:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:01,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:02,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:02,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044639198] [2021-10-07 15:01:02,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044639198] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:02,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910895905] [2021-10-07 15:01:02,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:01:02,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:02,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:02,885 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) [2021-10-07 15:01:02,888 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 [2021-10-07 15:01:04,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:01:04,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:04,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-07 15:01:04,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:04,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:01:04,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-07 15:01:04,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:01:04,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:01:04,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:01:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:05,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910895905] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:05,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:05,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 15:01:05,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433765039] [2021-10-07 15:01:05,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:01:05,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:01:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:01:05,302 INFO L87 Difference]: Start difference. First operand 225 states and 522 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) [2021-10-07 15:01:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:07,158 INFO L93 Difference]: Finished difference Result 245 states and 562 transitions. [2021-10-07 15:01:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:01:07,158 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 18 [2021-10-07 15:01:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:07,160 INFO L225 Difference]: With dead ends: 245 [2021-10-07 15:01:07,160 INFO L226 Difference]: Without dead ends: 245 [2021-10-07 15:01:07,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2364.0ms TimeCoverageRelationStatistics Valid=229, Invalid=2123, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:01:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-07 15:01:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 225. [2021-10-07 15:01:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 2.3228699551569507) internal successors, (518), 224 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) [2021-10-07 15:01:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 518 transitions. [2021-10-07 15:01:07,167 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 518 transitions. Word has length 18 [2021-10-07 15:01:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:07,167 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 518 transitions. [2021-10-07 15:01:07,167 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) [2021-10-07 15:01:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 518 transitions. [2021-10-07 15:01:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:07,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:07,168 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:07,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:07,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-07 15:01:07,382 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2109883137, now seen corresponding path program 19 times [2021-10-07 15:01:07,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:07,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905270855] [2021-10-07 15:01:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:07,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:08,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:08,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905270855] [2021-10-07 15:01:08,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905270855] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:08,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406641003] [2021-10-07 15:01:08,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:01:08,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:08,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:08,559 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) [2021-10-07 15:01:08,560 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 [2021-10-07 15:01:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:09,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-07 15:01:09,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:09,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:01:09,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 144 [2021-10-07 15:01:10,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-07 15:01:10,126 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:01:10,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-07 15:01:10,231 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:01:10,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-07 15:01:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:11,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406641003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:11,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:11,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2021-10-07 15:01:11,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830669483] [2021-10-07 15:01:11,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:01:11,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:01:11,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:01:11,577 INFO L87 Difference]: Start difference. First operand 225 states and 518 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:14,021 INFO L93 Difference]: Finished difference Result 253 states and 570 transitions. [2021-10-07 15:01:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:01:14,022 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 18 [2021-10-07 15:01:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:14,023 INFO L225 Difference]: With dead ends: 253 [2021-10-07 15:01:14,023 INFO L226 Difference]: Without dead ends: 253 [2021-10-07 15:01:14,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 2947.7ms TimeCoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:01:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-07 15:01:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 225. [2021-10-07 15:01:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 2.304932735426009) internal successors, (514), 224 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 514 transitions. [2021-10-07 15:01:14,029 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 514 transitions. Word has length 18 [2021-10-07 15:01:14,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:14,030 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 514 transitions. [2021-10-07 15:01:14,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 514 transitions. [2021-10-07 15:01:14,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:14,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:14,031 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:14,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-10-07 15:01:14,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:14,247 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:14,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2074261639, now seen corresponding path program 20 times [2021-10-07 15:01:14,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:14,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168679327] [2021-10-07 15:01:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:14,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:14,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:14,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168679327] [2021-10-07 15:01:14,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168679327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:14,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321561475] [2021-10-07 15:01:14,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:01:14,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:14,743 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) [2021-10-07 15:01:14,761 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 [2021-10-07 15:01:16,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:01:16,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:16,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-07 15:01:16,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:16,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:01:16,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:01:16,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:01:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:17,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321561475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:17,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:17,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 15:01:17,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399148522] [2021-10-07 15:01:17,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:01:17,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:01:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:01:17,327 INFO L87 Difference]: Start difference. First operand 225 states and 514 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) [2021-10-07 15:01:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:18,667 INFO L93 Difference]: Finished difference Result 241 states and 524 transitions. [2021-10-07 15:01:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:01:18,668 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 18 [2021-10-07 15:01:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:18,669 INFO L225 Difference]: With dead ends: 241 [2021-10-07 15:01:18,669 INFO L226 Difference]: Without dead ends: 223 [2021-10-07 15:01:18,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1647.4ms TimeCoverageRelationStatistics Valid=238, Invalid=2018, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 15:01:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-10-07 15:01:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 215. [2021-10-07 15:01:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 2.276995305164319) internal successors, (485), 214 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 485 transitions. [2021-10-07 15:01:18,674 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 485 transitions. Word has length 18 [2021-10-07 15:01:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:18,675 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 485 transitions. [2021-10-07 15:01:18,675 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) [2021-10-07 15:01:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 485 transitions. [2021-10-07 15:01:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:18,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:18,676 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:18,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:18,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-07 15:01:18,889 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:18,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1361117438, now seen corresponding path program 21 times [2021-10-07 15:01:18,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:18,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900266575] [2021-10-07 15:01:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:18,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:19,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:19,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900266575] [2021-10-07 15:01:19,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900266575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:19,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928977062] [2021-10-07 15:01:19,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:01:19,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:19,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:19,385 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) [2021-10-07 15:01:19,389 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 [2021-10-07 15:01:20,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:01:20,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:20,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-07 15:01:20,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:21,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:01:21,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:01:21,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:01:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:22,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928977062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:22,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:22,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2021-10-07 15:01:22,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169083183] [2021-10-07 15:01:22,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:01:22,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:01:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:01:22,215 INFO L87 Difference]: Start difference. First operand 215 states and 485 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:24,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:24,806 INFO L93 Difference]: Finished difference Result 252 states and 555 transitions. [2021-10-07 15:01:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:01:24,806 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 18 [2021-10-07 15:01:24,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:24,808 INFO L225 Difference]: With dead ends: 252 [2021-10-07 15:01:24,808 INFO L226 Difference]: Without dead ends: 248 [2021-10-07 15:01:24,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2815.3ms TimeCoverageRelationStatistics Valid=352, Invalid=2510, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:01:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-07 15:01:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 207. [2021-10-07 15:01:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 2.2487804878048783) internal successors, (461), 206 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) [2021-10-07 15:01:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 461 transitions. [2021-10-07 15:01:24,813 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 461 transitions. Word has length 18 [2021-10-07 15:01:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:24,813 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 461 transitions. [2021-10-07 15:01:24,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 461 transitions. [2021-10-07 15:01:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:24,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:24,814 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:24,844 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 [2021-10-07 15:01:25,020 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,SelfDestructingSolverStorable50 [2021-10-07 15:01:25,020 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:25,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1361117441, now seen corresponding path program 21 times [2021-10-07 15:01:25,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:25,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183935633] [2021-10-07 15:01:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:25,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:25,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:25,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183935633] [2021-10-07 15:01:25,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183935633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:25,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246027033] [2021-10-07 15:01:25,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:01:25,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:25,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:25,443 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) [2021-10-07 15:01:25,445 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 [2021-10-07 15:01:26,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:01:26,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:26,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 58 conjunts are in the unsatisfiable core [2021-10-07 15:01:26,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:27,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:01:27,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:01:27,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:01:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:27,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246027033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:27,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:27,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2021-10-07 15:01:27,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336068454] [2021-10-07 15:01:27,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:01:27,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:27,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:01:27,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:01:27,970 INFO L87 Difference]: Start difference. First operand 207 states and 461 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:29,141 INFO L93 Difference]: Finished difference Result 236 states and 515 transitions. [2021-10-07 15:01:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:01:29,141 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 18 [2021-10-07 15:01:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:29,143 INFO L225 Difference]: With dead ends: 236 [2021-10-07 15:01:29,143 INFO L226 Difference]: Without dead ends: 208 [2021-10-07 15:01:29,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1555.7ms TimeCoverageRelationStatistics Valid=284, Invalid=1786, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:01:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-07 15:01:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2021-10-07 15:01:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 2.243781094527363) internal successors, (451), 202 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 451 transitions. [2021-10-07 15:01:29,149 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 451 transitions. Word has length 18 [2021-10-07 15:01:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:29,149 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 451 transitions. [2021-10-07 15:01:29,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:29,149 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 451 transitions. [2021-10-07 15:01:29,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:29,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:29,150 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:29,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-10-07 15:01:29,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:29,365 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:29,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1361232758, now seen corresponding path program 22 times [2021-10-07 15:01:29,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:29,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891292791] [2021-10-07 15:01:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:29,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:30,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:30,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891292791] [2021-10-07 15:01:30,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891292791] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:30,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883542340] [2021-10-07 15:01:30,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:01:30,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:30,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:30,306 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) [2021-10-07 15:01:30,309 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 [2021-10-07 15:01:31,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:01:31,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:31,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-07 15:01:31,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:31,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:01:32,044 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 15:01:32,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-07 15:01:32,158 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-07 15:01:32,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2021-10-07 15:01:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883542340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:33,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:33,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 29 [2021-10-07 15:01:33,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775800904] [2021-10-07 15:01:33,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:01:33,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:01:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:01:33,322 INFO L87 Difference]: Start difference. First operand 203 states and 451 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:36,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:36,507 INFO L93 Difference]: Finished difference Result 203 states and 447 transitions. [2021-10-07 15:01:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:01:36,507 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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 18 [2021-10-07 15:01:36,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:36,508 INFO L225 Difference]: With dead ends: 203 [2021-10-07 15:01:36,509 INFO L226 Difference]: Without dead ends: 187 [2021-10-07 15:01:36,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 3261.9ms TimeCoverageRelationStatistics Valid=247, Invalid=1557, Unknown=2, NotChecked=0, Total=1806 [2021-10-07 15:01:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-07 15:01:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-10-07 15:01:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 2.2756756756756755) internal successors, (421), 186 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 421 transitions. [2021-10-07 15:01:36,512 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 421 transitions. Word has length 18 [2021-10-07 15:01:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:36,512 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 421 transitions. [2021-10-07 15:01:36,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2021-10-07 15:01:36,512 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 421 transitions. [2021-10-07 15:01:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:36,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:36,513 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:36,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:36,713 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,SelfDestructingSolverStorable52 [2021-10-07 15:01:36,714 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1731809898, now seen corresponding path program 23 times [2021-10-07 15:01:36,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:36,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408504081] [2021-10-07 15:01:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:36,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:37,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:37,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408504081] [2021-10-07 15:01:37,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408504081] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:37,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546131013] [2021-10-07 15:01:37,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:01:37,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:37,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:37,322 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) [2021-10-07 15:01:37,348 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 [2021-10-07 15:01:38,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:01:38,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:38,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:01:38,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:39,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:01:39,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546131013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:39,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:39,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-07 15:01:39,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989143089] [2021-10-07 15:01:39,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:01:39,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:39,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:01:39,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:01:39,350 INFO L87 Difference]: Start difference. First operand 187 states and 421 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:01:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:40,507 INFO L93 Difference]: Finished difference Result 217 states and 504 transitions. [2021-10-07 15:01:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:01:40,508 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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 18 [2021-10-07 15:01:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:40,510 INFO L225 Difference]: With dead ends: 217 [2021-10-07 15:01:40,510 INFO L226 Difference]: Without dead ends: 217 [2021-10-07 15:01:40,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1282.4ms TimeCoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:01:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-07 15:01:40,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 191. [2021-10-07 15:01:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 189 states have (on average 2.2804232804232805) internal successors, (431), 190 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 431 transitions. [2021-10-07 15:01:40,513 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 431 transitions. Word has length 18 [2021-10-07 15:01:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:40,513 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 431 transitions. [2021-10-07 15:01:40,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:01:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 431 transitions. [2021-10-07 15:01:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:40,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:40,514 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:40,543 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 [2021-10-07 15:01:40,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:40,715 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:40,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:40,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1731809901, now seen corresponding path program 22 times [2021-10-07 15:01:40,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:40,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754485628] [2021-10-07 15:01:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:40,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:41,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:41,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754485628] [2021-10-07 15:01:41,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754485628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:41,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145461203] [2021-10-07 15:01:41,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:01:41,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:41,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:41,840 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) [2021-10-07 15:01:41,841 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 [2021-10-07 15:01:43,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:01:43,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:43,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:01:43,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:01:43,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145461203] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:43,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:43,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 24 [2021-10-07 15:01:43,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584494529] [2021-10-07 15:01:43,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:01:43,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:01:43,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:01:43,918 INFO L87 Difference]: Start difference. First operand 191 states and 431 transitions. Second operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 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) [2021-10-07 15:01:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:47,585 INFO L93 Difference]: Finished difference Result 361 states and 870 transitions. [2021-10-07 15:01:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 15:01:47,586 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 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 18 [2021-10-07 15:01:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:47,588 INFO L225 Difference]: With dead ends: 361 [2021-10-07 15:01:47,588 INFO L226 Difference]: Without dead ends: 361 [2021-10-07 15:01:47,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 3232.4ms TimeCoverageRelationStatistics Valid=308, Invalid=2998, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 15:01:47,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-10-07 15:01:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 255. [2021-10-07 15:01:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 253 states have (on average 2.652173913043478) internal successors, (671), 254 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 671 transitions. [2021-10-07 15:01:47,597 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 671 transitions. Word has length 18 [2021-10-07 15:01:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:47,597 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 671 transitions. [2021-10-07 15:01:47,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 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) [2021-10-07 15:01:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 671 transitions. [2021-10-07 15:01:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:47,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:47,598 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:47,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:47,812 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,SelfDestructingSolverStorable54 [2021-10-07 15:01:47,813 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:47,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1735500141, now seen corresponding path program 23 times [2021-10-07 15:01:47,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:47,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048757999] [2021-10-07 15:01:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:47,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:49,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:49,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048757999] [2021-10-07 15:01:49,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048757999] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:49,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223232439] [2021-10-07 15:01:49,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:01:49,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:49,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:49,297 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) [2021-10-07 15:01:49,299 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 [2021-10-07 15:01:50,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:01:50,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:50,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:01:50,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:01:51,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223232439] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:51,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:51,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2021-10-07 15:01:51,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314298062] [2021-10-07 15:01:51,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:01:51,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:01:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:01:51,571 INFO L87 Difference]: Start difference. First operand 255 states and 671 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:01:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:53,027 INFO L93 Difference]: Finished difference Result 283 states and 731 transitions. [2021-10-07 15:01:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:01:53,028 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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 18 [2021-10-07 15:01:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:53,031 INFO L225 Difference]: With dead ends: 283 [2021-10-07 15:01:53,031 INFO L226 Difference]: Without dead ends: 283 [2021-10-07 15:01:53,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1955.2ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-10-07 15:01:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-10-07 15:01:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 239. [2021-10-07 15:01:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 2.6202531645569622) internal successors, (621), 238 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:53,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 621 transitions. [2021-10-07 15:01:53,037 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 621 transitions. Word has length 18 [2021-10-07 15:01:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:53,038 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 621 transitions. [2021-10-07 15:01:53,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:01:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 621 transitions. [2021-10-07 15:01:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:53,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:53,039 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:53,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-07 15:01:53,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:53,252 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:53,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:53,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1735503982, now seen corresponding path program 24 times [2021-10-07 15:01:53,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:53,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189711591] [2021-10-07 15:01:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:53,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-07 15:01:53,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:53,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189711591] [2021-10-07 15:01:53,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189711591] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:53,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354532356] [2021-10-07 15:01:53,353 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:01:53,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:53,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:53,359 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) [2021-10-07 15:01:53,395 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 [2021-10-07 15:01:54,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:01:54,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:54,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:01:54,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:55,134 INFO L354 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2021-10-07 15:01:55,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 12 [2021-10-07 15:01:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:01:55,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354532356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:55,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:55,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 8] total 10 [2021-10-07 15:01:55,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492875375] [2021-10-07 15:01:55,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:01:55,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:55,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:01:55,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:01:55,203 INFO L87 Difference]: Start difference. First operand 239 states and 621 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) [2021-10-07 15:01:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:55,590 INFO L93 Difference]: Finished difference Result 367 states and 887 transitions. [2021-10-07 15:01:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:01:55,591 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 18 [2021-10-07 15:01:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:55,593 INFO L225 Difference]: With dead ends: 367 [2021-10-07 15:01:55,593 INFO L226 Difference]: Without dead ends: 341 [2021-10-07 15:01:55,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 287.2ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:01:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-10-07 15:01:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 245. [2021-10-07 15:01:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 243 states have (on average 2.683127572016461) internal successors, (652), 244 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 652 transitions. [2021-10-07 15:01:55,601 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 652 transitions. Word has length 18 [2021-10-07 15:01:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:55,601 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 652 transitions. [2021-10-07 15:01:55,601 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) [2021-10-07 15:01:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 652 transitions. [2021-10-07 15:01:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:01:55,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:55,602 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:55,643 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 [2021-10-07 15:01:55,815 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,SelfDestructingSolverStorable56 [2021-10-07 15:01:55,816 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:01:55,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:55,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1846441701, now seen corresponding path program 24 times [2021-10-07 15:01:55,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:55,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683053782] [2021-10-07 15:01:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:55,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:59,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:59,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683053782] [2021-10-07 15:01:59,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683053782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:59,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856145615] [2021-10-07 15:01:59,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:01:59,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:59,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:59,427 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) [2021-10-07 15:01:59,428 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 [2021-10-07 15:02:01,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:02:01,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:01,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:02:01,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:02:01,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856145615] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:01,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:01,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 23 [2021-10-07 15:02:01,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784179907] [2021-10-07 15:02:01,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:02:01,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:02:01,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:02:01,679 INFO L87 Difference]: Start difference. First operand 245 states and 652 transitions. Second operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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) [2021-10-07 15:02:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:03,185 INFO L93 Difference]: Finished difference Result 265 states and 688 transitions. [2021-10-07 15:02:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:02:03,185 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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 18 [2021-10-07 15:02:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:03,187 INFO L225 Difference]: With dead ends: 265 [2021-10-07 15:02:03,187 INFO L226 Difference]: Without dead ends: 265 [2021-10-07 15:02:03,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2061.1ms TimeCoverageRelationStatistics Valid=184, Invalid=1538, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:02:03,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-07 15:02:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 239. [2021-10-07 15:02:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 2.654008438818565) internal successors, (629), 238 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 629 transitions. [2021-10-07 15:02:03,193 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 629 transitions. Word has length 18 [2021-10-07 15:02:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:03,193 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 629 transitions. [2021-10-07 15:02:03,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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) [2021-10-07 15:02:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 629 transitions. [2021-10-07 15:02:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:03,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:03,194 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:03,230 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 [2021-10-07 15:02:03,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-07 15:02:03,408 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:03,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:03,408 INFO L82 PathProgramCache]: Analyzing trace with hash 981868413, now seen corresponding path program 25 times [2021-10-07 15:02:03,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:03,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456288620] [2021-10-07 15:02:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:03,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:02:03,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:03,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456288620] [2021-10-07 15:02:03,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456288620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:03,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888446622] [2021-10-07 15:02:03,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:02:03,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:03,565 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) [2021-10-07 15:02:03,566 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 [2021-10-07 15:02:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:05,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:02:05,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:05,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 126 [2021-10-07 15:02:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:02:05,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888446622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:05,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:05,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-07 15:02:05,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577161091] [2021-10-07 15:02:05,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:02:05,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:02:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:02:05,586 INFO L87 Difference]: Start difference. First operand 239 states and 629 transitions. Second operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:05,819 INFO L93 Difference]: Finished difference Result 239 states and 617 transitions. [2021-10-07 15:02:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:02:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 15:02:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:05,822 INFO L225 Difference]: With dead ends: 239 [2021-10-07 15:02:05,822 INFO L226 Difference]: Without dead ends: 192 [2021-10-07 15:02:05,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 387.9ms TimeCoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:02:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-07 15:02:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-07 15:02:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 2.8473684210526318) internal successors, (541), 191 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 541 transitions. [2021-10-07 15:02:05,826 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 541 transitions. Word has length 19 [2021-10-07 15:02:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:05,826 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 541 transitions. [2021-10-07 15:02:05,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:05,826 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 541 transitions. [2021-10-07 15:02:05,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:05,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:05,827 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:05,865 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 [2021-10-07 15:02:06,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-07 15:02:06,042 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:06,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2146499982, now seen corresponding path program 25 times [2021-10-07 15:02:06,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:06,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832333592] [2021-10-07 15:02:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:06,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:09,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:09,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832333592] [2021-10-07 15:02:09,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832333592] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:09,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960547913] [2021-10-07 15:02:09,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:02:09,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:09,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:09,458 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) [2021-10-07 15:02:09,460 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 [2021-10-07 15:02:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:11,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:02:11,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:02:12,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960547913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:12,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:12,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 29 [2021-10-07 15:02:12,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636410863] [2021-10-07 15:02:12,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:02:12,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:12,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:02:12,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:02:12,110 INFO L87 Difference]: Start difference. First operand 192 states and 541 transitions. Second operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-07 15:02:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:15,046 INFO L93 Difference]: Finished difference Result 276 states and 781 transitions. [2021-10-07 15:02:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:02:15,047 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 19 [2021-10-07 15:02:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:15,049 INFO L225 Difference]: With dead ends: 276 [2021-10-07 15:02:15,049 INFO L226 Difference]: Without dead ends: 276 [2021-10-07 15:02:15,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 3547.3ms TimeCoverageRelationStatistics Valid=278, Invalid=2272, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:02:15,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-10-07 15:02:15,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 238. [2021-10-07 15:02:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 236 states have (on average 2.9322033898305087) internal successors, (692), 237 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 692 transitions. [2021-10-07 15:02:15,054 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 692 transitions. Word has length 19 [2021-10-07 15:02:15,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:15,054 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 692 transitions. [2021-10-07 15:02:15,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-07 15:02:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 692 transitions. [2021-10-07 15:02:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:15,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:15,055 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:15,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-07 15:02:15,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:15,257 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:15,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2146499985, now seen corresponding path program 26 times [2021-10-07 15:02:15,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:15,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657077635] [2021-10-07 15:02:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:15,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:16,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:16,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657077635] [2021-10-07 15:02:16,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657077635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:16,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552321295] [2021-10-07 15:02:16,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:02:16,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:16,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:16,219 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) [2021-10-07 15:02:16,220 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 [2021-10-07 15:02:17,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:02:17,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:17,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:02:17,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:02:18,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552321295] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:18,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:18,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-07 15:02:18,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536246248] [2021-10-07 15:02:18,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:02:18,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:02:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:02:18,780 INFO L87 Difference]: Start difference. First operand 238 states and 692 transitions. Second operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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) [2021-10-07 15:02:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:20,980 INFO L93 Difference]: Finished difference Result 268 states and 743 transitions. [2021-10-07 15:02:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:02:20,981 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 15:02:20,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:20,982 INFO L225 Difference]: With dead ends: 268 [2021-10-07 15:02:20,982 INFO L226 Difference]: Without dead ends: 268 [2021-10-07 15:02:20,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 2410.0ms TimeCoverageRelationStatistics Valid=275, Invalid=2175, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:02:20,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-10-07 15:02:20,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 222. [2021-10-07 15:02:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 220 states have (on average 2.8636363636363638) internal successors, (630), 221 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 630 transitions. [2021-10-07 15:02:20,987 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 630 transitions. Word has length 19 [2021-10-07 15:02:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:20,987 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 630 transitions. [2021-10-07 15:02:20,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 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) [2021-10-07 15:02:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 630 transitions. [2021-10-07 15:02:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:20,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:20,988 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:21,019 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 [2021-10-07 15:02:21,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:21,193 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:21,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2144892394, now seen corresponding path program 26 times [2021-10-07 15:02:21,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:21,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319530031] [2021-10-07 15:02:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:21,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:22,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:22,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319530031] [2021-10-07 15:02:22,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319530031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:22,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933219407] [2021-10-07 15:02:22,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:02:22,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:22,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:22,592 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) [2021-10-07 15:02:22,592 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 [2021-10-07 15:02:24,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:02:24,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:24,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:02:24,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:02:25,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933219407] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:25,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:25,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 29 [2021-10-07 15:02:25,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914632748] [2021-10-07 15:02:25,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:02:25,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:25,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:02:25,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:02:25,327 INFO L87 Difference]: Start difference. First operand 222 states and 630 transitions. Second operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-07 15:02:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:28,036 INFO L93 Difference]: Finished difference Result 460 states and 1227 transitions. [2021-10-07 15:02:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:02:28,037 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 19 [2021-10-07 15:02:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:28,041 INFO L225 Difference]: With dead ends: 460 [2021-10-07 15:02:28,041 INFO L226 Difference]: Without dead ends: 456 [2021-10-07 15:02:28,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2981.9ms TimeCoverageRelationStatistics Valid=275, Invalid=2377, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 15:02:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-10-07 15:02:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 300. [2021-10-07 15:02:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 298 states have (on average 3.0369127516778525) internal successors, (905), 299 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 905 transitions. [2021-10-07 15:02:28,051 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 905 transitions. Word has length 19 [2021-10-07 15:02:28,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:28,051 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 905 transitions. [2021-10-07 15:02:28,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2021-10-07 15:02:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 905 transitions. [2021-10-07 15:02:28,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:28,052 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:28,052 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:28,085 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 [2021-10-07 15:02:28,261 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,SelfDestructingSolverStorable61 [2021-10-07 15:02:28,262 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:28,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2144892391, now seen corresponding path program 27 times [2021-10-07 15:02:28,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:28,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874287128] [2021-10-07 15:02:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:28,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:29,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:29,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874287128] [2021-10-07 15:02:29,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874287128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:29,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353625170] [2021-10-07 15:02:29,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:02:29,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:29,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:29,006 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) [2021-10-07 15:02:29,007 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 [2021-10-07 15:02:31,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:02:31,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:31,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:02:31,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:02:31,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353625170] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:31,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:31,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-07 15:02:31,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196118949] [2021-10-07 15:02:31,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:02:31,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:02:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:02:31,742 INFO L87 Difference]: Start difference. First operand 300 states and 905 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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) [2021-10-07 15:02:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:36,560 INFO L93 Difference]: Finished difference Result 1044 states and 2875 transitions. [2021-10-07 15:02:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-07 15:02:36,560 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 19 [2021-10-07 15:02:36,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:36,566 INFO L225 Difference]: With dead ends: 1044 [2021-10-07 15:02:36,566 INFO L226 Difference]: Without dead ends: 1008 [2021-10-07 15:02:36,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 3938.9ms TimeCoverageRelationStatistics Valid=583, Invalid=4529, Unknown=0, NotChecked=0, Total=5112 [2021-10-07 15:02:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-10-07 15:02:36,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 508. [2021-10-07 15:02:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 506 states have (on average 3.5) internal successors, (1771), 507 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1771 transitions. [2021-10-07 15:02:36,579 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1771 transitions. Word has length 19 [2021-10-07 15:02:36,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:36,579 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1771 transitions. [2021-10-07 15:02:36,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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) [2021-10-07 15:02:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1771 transitions. [2021-10-07 15:02:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:36,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:36,580 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:36,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-07 15:02:36,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:36,781 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:36,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2144773351, now seen corresponding path program 28 times [2021-10-07 15:02:36,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:36,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882253769] [2021-10-07 15:02:36,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:36,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:38,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:38,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882253769] [2021-10-07 15:02:38,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882253769] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:38,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626107726] [2021-10-07 15:02:38,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:02:38,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:38,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:38,338 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) [2021-10-07 15:02:38,339 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 [2021-10-07 15:02:40,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:02:40,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:40,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:02:40,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:02:41,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626107726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:41,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:41,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 28 [2021-10-07 15:02:41,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288192041] [2021-10-07 15:02:41,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:02:41,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:02:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:02:41,039 INFO L87 Difference]: Start difference. First operand 508 states and 1771 transitions. Second operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 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) [2021-10-07 15:02:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:43,247 INFO L93 Difference]: Finished difference Result 596 states and 1967 transitions. [2021-10-07 15:02:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:02:43,247 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 15:02:43,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:43,251 INFO L225 Difference]: With dead ends: 596 [2021-10-07 15:02:43,251 INFO L226 Difference]: Without dead ends: 576 [2021-10-07 15:02:43,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2608.8ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 15:02:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-07 15:02:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 528. [2021-10-07 15:02:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 526 states have (on average 3.4049429657794676) internal successors, (1791), 527 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) [2021-10-07 15:02:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1791 transitions. [2021-10-07 15:02:43,264 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1791 transitions. Word has length 19 [2021-10-07 15:02:43,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:43,264 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1791 transitions. [2021-10-07 15:02:43,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 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) [2021-10-07 15:02:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1791 transitions. [2021-10-07 15:02:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:43,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:43,265 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:43,296 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 [2021-10-07 15:02:43,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:43,466 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2034069874, now seen corresponding path program 27 times [2021-10-07 15:02:43,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:43,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917561549] [2021-10-07 15:02:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:43,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:45,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:45,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917561549] [2021-10-07 15:02:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917561549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:45,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100075448] [2021-10-07 15:02:45,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:02:45,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:45,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:45,717 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) [2021-10-07 15:02:45,719 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 [2021-10-07 15:02:47,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:02:47,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:47,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:02:47,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:02:48,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100075448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:48,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:48,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-07 15:02:48,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228306449] [2021-10-07 15:02:48,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:02:48,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:02:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:02:48,405 INFO L87 Difference]: Start difference. First operand 528 states and 1791 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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) [2021-10-07 15:02:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:51,664 INFO L93 Difference]: Finished difference Result 800 states and 2409 transitions. [2021-10-07 15:02:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 15:02:51,665 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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 19 [2021-10-07 15:02:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:51,670 INFO L225 Difference]: With dead ends: 800 [2021-10-07 15:02:51,671 INFO L226 Difference]: Without dead ends: 798 [2021-10-07 15:02:51,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 3106.3ms TimeCoverageRelationStatistics Valid=285, Invalid=2577, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:02:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-07 15:02:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 574. [2021-10-07 15:02:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 572 states have (on average 3.423076923076923) internal successors, (1958), 573 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1958 transitions. [2021-10-07 15:02:51,689 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1958 transitions. Word has length 19 [2021-10-07 15:02:51,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:51,689 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 1958 transitions. [2021-10-07 15:02:51,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 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) [2021-10-07 15:02:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1958 transitions. [2021-10-07 15:02:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:51,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:51,690 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:51,721 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 [2021-10-07 15:02:51,890 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,SelfDestructingSolverStorable64 [2021-10-07 15:02:51,891 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:51,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2034069871, now seen corresponding path program 29 times [2021-10-07 15:02:51,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:51,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043564407] [2021-10-07 15:02:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:51,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:52,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:52,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043564407] [2021-10-07 15:02:52,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043564407] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:52,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141545056] [2021-10-07 15:02:52,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:02:52,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:52,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:52,568 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) [2021-10-07 15:02:52,571 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 [2021-10-07 15:02:54,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:02:54,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:54,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:02:54,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:02:55,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141545056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:55,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:55,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2021-10-07 15:02:55,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740966776] [2021-10-07 15:02:55,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:02:55,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:02:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:02:55,342 INFO L87 Difference]: Start difference. First operand 574 states and 1958 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:02:57,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:57,477 INFO L93 Difference]: Finished difference Result 742 states and 2294 transitions. [2021-10-07 15:02:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:02:57,478 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 19 [2021-10-07 15:02:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:57,483 INFO L225 Difference]: With dead ends: 742 [2021-10-07 15:02:57,484 INFO L226 Difference]: Without dead ends: 736 [2021-10-07 15:02:57,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 2213.3ms TimeCoverageRelationStatistics Valid=279, Invalid=2171, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 15:02:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-07 15:02:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 592. [2021-10-07 15:02:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 590 states have (on average 3.3915254237288135) internal successors, (2001), 591 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 2001 transitions. [2021-10-07 15:02:57,502 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 2001 transitions. Word has length 19 [2021-10-07 15:02:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:57,503 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 2001 transitions. [2021-10-07 15:02:57,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:02:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 2001 transitions. [2021-10-07 15:02:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:02:57,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:57,504 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:57,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-07 15:02:57,717 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,SelfDestructingSolverStorable65 [2021-10-07 15:02:57,718 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:02:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2033954554, now seen corresponding path program 28 times [2021-10-07 15:02:57,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:57,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211598300] [2021-10-07 15:02:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:57,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:59,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:59,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211598300] [2021-10-07 15:02:59,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211598300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:59,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936662123] [2021-10-07 15:02:59,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:02:59,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:59,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:59,447 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) [2021-10-07 15:02:59,448 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 [2021-10-07 15:03:01,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:03:01,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:01,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:03:01,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:03:02,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936662123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:02,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:02,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2021-10-07 15:03:02,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681369026] [2021-10-07 15:03:02,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:03:02,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:02,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:03:02,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:03:02,359 INFO L87 Difference]: Start difference. First operand 592 states and 2001 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:08,639 INFO L93 Difference]: Finished difference Result 814 states and 2504 transitions. [2021-10-07 15:03:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-07 15:03:08,640 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 19 [2021-10-07 15:03:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:08,646 INFO L225 Difference]: With dead ends: 814 [2021-10-07 15:03:08,646 INFO L226 Difference]: Without dead ends: 778 [2021-10-07 15:03:08,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 6299.7ms TimeCoverageRelationStatistics Valid=566, Invalid=3856, Unknown=0, NotChecked=0, Total=4422 [2021-10-07 15:03:08,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-10-07 15:03:08,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 636. [2021-10-07 15:03:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 634 states have (on average 3.3201892744479493) internal successors, (2105), 635 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 2105 transitions. [2021-10-07 15:03:08,662 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 2105 transitions. Word has length 19 [2021-10-07 15:03:08,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:08,663 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 2105 transitions. [2021-10-07 15:03:08,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 2105 transitions. [2021-10-07 15:03:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:03:08,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:08,664 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:08,701 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 [2021-10-07 15:03:08,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:08,878 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:03:08,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:08,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2033950831, now seen corresponding path program 30 times [2021-10-07 15:03:08,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:08,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028469409] [2021-10-07 15:03:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:08,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:10,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:10,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028469409] [2021-10-07 15:03:10,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028469409] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:10,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408560267] [2021-10-07 15:03:10,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:03:10,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:10,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:10,379 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) [2021-10-07 15:03:10,380 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 [2021-10-07 15:03:12,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:03:12,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:12,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:03:12,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:03:13,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408560267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:13,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:13,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2021-10-07 15:03:13,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274346346] [2021-10-07 15:03:13,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:03:13,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:03:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:03:13,434 INFO L87 Difference]: Start difference. First operand 636 states and 2105 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:16,148 INFO L93 Difference]: Finished difference Result 853 states and 2611 transitions. [2021-10-07 15:03:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:03:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 19 [2021-10-07 15:03:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:16,152 INFO L225 Difference]: With dead ends: 853 [2021-10-07 15:03:16,152 INFO L226 Difference]: Without dead ends: 849 [2021-10-07 15:03:16,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2813.9ms TimeCoverageRelationStatistics Valid=251, Invalid=2611, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:03:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-10-07 15:03:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 670. [2021-10-07 15:03:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 668 states have (on average 3.3622754491017965) internal successors, (2246), 669 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2246 transitions. [2021-10-07 15:03:16,173 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2246 transitions. Word has length 19 [2021-10-07 15:03:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:16,173 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 2246 transitions. [2021-10-07 15:03:16,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2246 transitions. [2021-10-07 15:03:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:03:16,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:16,175 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:16,220 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 [2021-10-07 15:03:16,389 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,SelfDestructingSolverStorable67 [2021-10-07 15:03:16,390 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:03:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:16,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2030375911, now seen corresponding path program 31 times [2021-10-07 15:03:16,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:16,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772613667] [2021-10-07 15:03:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:16,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:18,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:18,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772613667] [2021-10-07 15:03:18,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772613667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:18,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366596388] [2021-10-07 15:03:18,457 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:03:18,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:18,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:18,458 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) [2021-10-07 15:03:18,463 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 [2021-10-07 15:03:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:20,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 55 conjunts are in the unsatisfiable core [2021-10-07 15:03:20,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:20,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:03:20,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-07 15:03:20,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:03:20,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:03:20,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:03:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:21,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366596388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:21,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:21,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2021-10-07 15:03:21,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036418223] [2021-10-07 15:03:21,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:03:21,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:03:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:03:21,869 INFO L87 Difference]: Start difference. First operand 670 states and 2246 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) [2021-10-07 15:03:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:26,291 INFO L93 Difference]: Finished difference Result 940 states and 2935 transitions. [2021-10-07 15:03:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:03:26,292 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 19 [2021-10-07 15:03:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:26,296 INFO L225 Difference]: With dead ends: 940 [2021-10-07 15:03:26,296 INFO L226 Difference]: Without dead ends: 938 [2021-10-07 15:03:26,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 4944.7ms TimeCoverageRelationStatistics Valid=322, Invalid=3584, Unknown=0, NotChecked=0, Total=3906 [2021-10-07 15:03:26,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-10-07 15:03:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 740. [2021-10-07 15:03:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 738 states have (on average 3.4430894308943087) internal successors, (2541), 739 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2541 transitions. [2021-10-07 15:03:26,315 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2541 transitions. Word has length 19 [2021-10-07 15:03:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:26,316 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 2541 transitions. [2021-10-07 15:03:26,316 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) [2021-10-07 15:03:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2541 transitions. [2021-10-07 15:03:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:03:26,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:26,317 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:26,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-07 15:03:26,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-07 15:03:26,530 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:03:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1401428246, now seen corresponding path program 29 times [2021-10-07 15:03:26,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:26,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544852349] [2021-10-07 15:03:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:26,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:29,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:29,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544852349] [2021-10-07 15:03:29,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544852349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:29,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668561833] [2021-10-07 15:03:29,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:03:29,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:29,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:29,810 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) [2021-10-07 15:03:29,812 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 [2021-10-07 15:03:31,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:03:31,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:31,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:03:31,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:03:32,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668561833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:32,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:32,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2021-10-07 15:03:32,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932963327] [2021-10-07 15:03:32,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:03:32,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:03:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:03:32,782 INFO L87 Difference]: Start difference. First operand 740 states and 2541 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:36,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:36,048 INFO L93 Difference]: Finished difference Result 938 states and 2986 transitions. [2021-10-07 15:03:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:03:36,048 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 19 [2021-10-07 15:03:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:36,051 INFO L225 Difference]: With dead ends: 938 [2021-10-07 15:03:36,051 INFO L226 Difference]: Without dead ends: 934 [2021-10-07 15:03:36,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3540.8ms TimeCoverageRelationStatistics Valid=313, Invalid=2549, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:03:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-10-07 15:03:36,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 768. [2021-10-07 15:03:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 766 states have (on average 3.4295039164490864) internal successors, (2627), 767 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 2627 transitions. [2021-10-07 15:03:36,066 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 2627 transitions. Word has length 19 [2021-10-07 15:03:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:36,067 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 2627 transitions. [2021-10-07 15:03:36,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 2627 transitions. [2021-10-07 15:03:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:03:36,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:36,068 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:36,101 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 [2021-10-07 15:03:36,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-07 15:03:36,269 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:03:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1401428249, now seen corresponding path program 32 times [2021-10-07 15:03:36,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:36,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900138481] [2021-10-07 15:03:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:36,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:36,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:36,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900138481] [2021-10-07 15:03:36,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900138481] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:36,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903126443] [2021-10-07 15:03:36,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:03:36,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:36,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:36,968 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) [2021-10-07 15:03:36,971 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 [2021-10-07 15:03:38,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:03:38,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:38,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:03:38,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:03:39,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903126443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:39,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:39,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2021-10-07 15:03:39,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455612033] [2021-10-07 15:03:39,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:03:39,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:03:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:03:39,925 INFO L87 Difference]: Start difference. First operand 768 states and 2627 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:41,858 INFO L93 Difference]: Finished difference Result 832 states and 2741 transitions. [2021-10-07 15:03:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:03:41,858 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 19 [2021-10-07 15:03:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:41,861 INFO L225 Difference]: With dead ends: 832 [2021-10-07 15:03:41,861 INFO L226 Difference]: Without dead ends: 814 [2021-10-07 15:03:41,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2170.8ms TimeCoverageRelationStatistics Valid=263, Invalid=2089, Unknown=0, NotChecked=0, Total=2352 [2021-10-07 15:03:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-10-07 15:03:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 770. [2021-10-07 15:03:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 768 states have (on average 3.3802083333333335) internal successors, (2596), 769 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2596 transitions. [2021-10-07 15:03:41,937 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2596 transitions. Word has length 19 [2021-10-07 15:03:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:41,937 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 2596 transitions. [2021-10-07 15:03:41,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:03:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2596 transitions. [2021-10-07 15:03:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:03:41,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:41,938 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:41,973 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 [2021-10-07 15:03:42,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:42,139 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:03:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2116990698, now seen corresponding path program 30 times [2021-10-07 15:03:42,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:42,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70995256] [2021-10-07 15:03:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:42,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:03:42,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:42,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70995256] [2021-10-07 15:03:42,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70995256] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:42,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472800100] [2021-10-07 15:03:42,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:03:42,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:42,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:42,212 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) [2021-10-07 15:03:42,223 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 [2021-10-07 15:03:44,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:03:44,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:44,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:03:44,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:44,567 INFO L354 Elim1Store]: treesize reduction 108, result has 0.9 percent of original size [2021-10-07 15:03:44,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 17 [2021-10-07 15:03:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:03:44,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472800100] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:44,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:44,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10] total 14 [2021-10-07 15:03:44,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629996836] [2021-10-07 15:03:44,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:03:44,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:44,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:03:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:03:44,679 INFO L87 Difference]: Start difference. First operand 770 states and 2596 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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) [2021-10-07 15:03:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:45,549 INFO L93 Difference]: Finished difference Result 1374 states and 4492 transitions. [2021-10-07 15:03:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:03:45,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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 20 [2021-10-07 15:03:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:45,553 INFO L225 Difference]: With dead ends: 1374 [2021-10-07 15:03:45,553 INFO L226 Difference]: Without dead ends: 1342 [2021-10-07 15:03:45,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 606.5ms TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:03:45,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-10-07 15:03:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 884. [2021-10-07 15:03:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 882 states have (on average 3.4727891156462585) internal successors, (3063), 883 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 3063 transitions. [2021-10-07 15:03:45,576 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 3063 transitions. Word has length 20 [2021-10-07 15:03:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:45,576 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 3063 transitions. [2021-10-07 15:03:45,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 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) [2021-10-07 15:03:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 3063 transitions. [2021-10-07 15:03:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:03:45,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:45,578 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:45,613 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 [2021-10-07 15:03:45,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:45,793 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:03:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:45,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2067273239, now seen corresponding path program 33 times [2021-10-07 15:03:45,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:45,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844585378] [2021-10-07 15:03:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:45,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:46,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:46,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844585378] [2021-10-07 15:03:46,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844585378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:46,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110108633] [2021-10-07 15:03:46,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:03:46,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:46,888 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) [2021-10-07 15:03:46,889 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 [2021-10-07 15:03:49,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:03:49,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:49,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:03:49,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:03:49,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110108633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:49,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:49,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 25 [2021-10-07 15:03:49,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768530414] [2021-10-07 15:03:49,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:03:49,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:03:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:03:49,913 INFO L87 Difference]: Start difference. First operand 884 states and 3063 transitions. Second operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:03:51,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:51,831 INFO L93 Difference]: Finished difference Result 1022 states and 3352 transitions. [2021-10-07 15:03:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:03:51,832 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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 20 [2021-10-07 15:03:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:51,834 INFO L225 Difference]: With dead ends: 1022 [2021-10-07 15:03:51,835 INFO L226 Difference]: Without dead ends: 1022 [2021-10-07 15:03:51,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2074.9ms TimeCoverageRelationStatistics Valid=187, Invalid=1793, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 15:03:51,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2021-10-07 15:03:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 858. [2021-10-07 15:03:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 856 states have (on average 3.453271028037383) internal successors, (2956), 857 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 2956 transitions. [2021-10-07 15:03:51,854 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 2956 transitions. Word has length 20 [2021-10-07 15:03:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:51,854 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 2956 transitions. [2021-10-07 15:03:51,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 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) [2021-10-07 15:03:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 2956 transitions. [2021-10-07 15:03:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:03:51,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:51,856 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:51,905 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 [2021-10-07 15:03:52,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:52,070 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:03:52,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:52,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2063579282, now seen corresponding path program 31 times [2021-10-07 15:03:52,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:52,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308910386] [2021-10-07 15:03:52,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:52,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:53,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:53,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308910386] [2021-10-07 15:03:53,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308910386] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:53,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547685731] [2021-10-07 15:03:53,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:03:53,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:53,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:53,450 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) [2021-10-07 15:03:53,451 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 [2021-10-07 15:03:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:55,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-07 15:03:55,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:55,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:03:55,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-07 15:03:55,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-07 15:03:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:03:55,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-07 15:03:55,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:03:55,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:03:55,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:03:55,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:03:56,036 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:03:56,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-10-07 15:03:56,141 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:03:56,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-10-07 15:03:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:57,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547685731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:57,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:57,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2021-10-07 15:03:57,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983388926] [2021-10-07 15:03:57,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:03:57,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:03:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:03:57,383 INFO L87 Difference]: Start difference. First operand 858 states and 2956 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) [2021-10-07 15:04:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:01,797 INFO L93 Difference]: Finished difference Result 1896 states and 6319 transitions. [2021-10-07 15:04:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 15:04:01,797 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 20 [2021-10-07 15:04:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:01,803 INFO L225 Difference]: With dead ends: 1896 [2021-10-07 15:04:01,803 INFO L226 Difference]: Without dead ends: 1892 [2021-10-07 15:04:01,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 4258.9ms TimeCoverageRelationStatistics Valid=382, Invalid=4040, Unknown=0, NotChecked=0, Total=4422 [2021-10-07 15:04:01,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-10-07 15:04:01,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1292. [2021-10-07 15:04:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1290 states have (on average 3.8348837209302324) internal successors, (4947), 1291 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 4947 transitions. [2021-10-07 15:04:01,850 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 4947 transitions. Word has length 20 [2021-10-07 15:04:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:01,850 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 4947 transitions. [2021-10-07 15:04:01,851 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) [2021-10-07 15:04:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 4947 transitions. [2021-10-07 15:04:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:04:01,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:01,852 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:01,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-07 15:04:02,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:02,067 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:04:02,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:02,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1372034158, now seen corresponding path program 32 times [2021-10-07 15:04:02,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:02,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688464136] [2021-10-07 15:04:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:02,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:02,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:02,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688464136] [2021-10-07 15:04:02,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688464136] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:02,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665973736] [2021-10-07 15:04:02,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:04:02,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:02,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:02,675 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) [2021-10-07 15:04:02,694 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 [2021-10-07 15:04:04,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:04:04,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:04,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:04:04,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:06,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665973736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:06,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:06,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 30 [2021-10-07 15:04:06,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414451475] [2021-10-07 15:04:06,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:04:06,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:04:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:04:06,242 INFO L87 Difference]: Start difference. First operand 1292 states and 4947 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:04:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:10,825 INFO L93 Difference]: Finished difference Result 2339 states and 8448 transitions. [2021-10-07 15:04:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:04:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:04:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:10,839 INFO L225 Difference]: With dead ends: 2339 [2021-10-07 15:04:10,839 INFO L226 Difference]: Without dead ends: 2337 [2021-10-07 15:04:10,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 4405.6ms TimeCoverageRelationStatistics Valid=587, Invalid=4243, Unknown=0, NotChecked=0, Total=4830 [2021-10-07 15:04:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2021-10-07 15:04:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1682. [2021-10-07 15:04:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1680 states have (on average 3.9404761904761907) internal successors, (6620), 1681 states have internal predecessors, (6620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 6620 transitions. [2021-10-07 15:04:10,901 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 6620 transitions. Word has length 20 [2021-10-07 15:04:10,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:10,901 INFO L470 AbstractCegarLoop]: Abstraction has 1682 states and 6620 transitions. [2021-10-07 15:04:10,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:04:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 6620 transitions. [2021-10-07 15:04:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:04:10,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:10,903 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:10,955 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 [2021-10-07 15:04:11,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:11,118 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:04:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1482737638, now seen corresponding path program 33 times [2021-10-07 15:04:11,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:11,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844774762] [2021-10-07 15:04:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:11,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:12,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:12,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844774762] [2021-10-07 15:04:12,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844774762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:12,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924489936] [2021-10-07 15:04:12,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:04:12,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:12,044 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) [2021-10-07 15:04:12,045 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 [2021-10-07 15:04:14,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:04:14,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:14,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-07 15:04:14,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:15,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924489936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:15,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:15,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2021-10-07 15:04:15,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459696632] [2021-10-07 15:04:15,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:04:15,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:04:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:04:15,909 INFO L87 Difference]: Start difference. First operand 1682 states and 6620 transitions. Second operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-10-07 15:04:18,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:18,893 INFO L93 Difference]: Finished difference Result 2178 states and 8146 transitions. [2021-10-07 15:04:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:04:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:04:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:18,904 INFO L225 Difference]: With dead ends: 2178 [2021-10-07 15:04:18,904 INFO L226 Difference]: Without dead ends: 2178 [2021-10-07 15:04:18,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 3066.9ms TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-10-07 15:04:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2021-10-07 15:04:18,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 1850. [2021-10-07 15:04:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1848 states have (on average 3.9696969696969697) internal successors, (7336), 1849 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 7336 transitions. [2021-10-07 15:04:18,965 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 7336 transitions. Word has length 20 [2021-10-07 15:04:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:18,965 INFO L470 AbstractCegarLoop]: Abstraction has 1850 states and 7336 transitions. [2021-10-07 15:04:18,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-10-07 15:04:18,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 7336 transitions. [2021-10-07 15:04:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:04:18,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:18,967 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:19,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-07 15:04:19,182 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,SelfDestructingSolverStorable75 [2021-10-07 15:04:19,182 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:04:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash 498174438, now seen corresponding path program 34 times [2021-10-07 15:04:19,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:19,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210906308] [2021-10-07 15:04:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:19,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:19,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:19,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210906308] [2021-10-07 15:04:19,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210906308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:19,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688229019] [2021-10-07 15:04:19,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:04:19,826 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:19,827 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) [2021-10-07 15:04:19,837 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 [2021-10-07 15:04:21,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:04:21,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:21,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-07 15:04:21,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:23,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688229019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:23,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:23,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2021-10-07 15:04:23,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048617462] [2021-10-07 15:04:23,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:04:23,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:04:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:04:23,292 INFO L87 Difference]: Start difference. First operand 1850 states and 7336 transitions. Second operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-10-07 15:04:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:26,340 INFO L93 Difference]: Finished difference Result 2660 states and 9883 transitions. [2021-10-07 15:04:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:04:26,340 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:04:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:26,351 INFO L225 Difference]: With dead ends: 2660 [2021-10-07 15:04:26,351 INFO L226 Difference]: Without dead ends: 2660 [2021-10-07 15:04:26,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 2963.1ms TimeCoverageRelationStatistics Valid=387, Invalid=3645, Unknown=0, NotChecked=0, Total=4032 [2021-10-07 15:04:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-10-07 15:04:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2108. [2021-10-07 15:04:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2106 states have (on average 4.0413105413105415) internal successors, (8511), 2107 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 8511 transitions. [2021-10-07 15:04:26,428 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 8511 transitions. Word has length 20 [2021-10-07 15:04:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:26,428 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 8511 transitions. [2021-10-07 15:04:26,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-10-07 15:04:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 8511 transitions. [2021-10-07 15:04:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:04:26,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:26,430 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:26,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-07 15:04:26,643 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,SelfDestructingSolverStorable76 [2021-10-07 15:04:26,644 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:04:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash 498174441, now seen corresponding path program 34 times [2021-10-07 15:04:26,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:26,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637236016] [2021-10-07 15:04:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:26,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:27,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:27,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637236016] [2021-10-07 15:04:27,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637236016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:27,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620440488] [2021-10-07 15:04:27,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:04:27,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:27,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:27,217 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) [2021-10-07 15:04:27,218 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 [2021-10-07 15:04:29,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:04:29,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:29,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:04:29,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:30,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620440488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:30,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:30,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32 [2021-10-07 15:04:30,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266257995] [2021-10-07 15:04:30,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:04:30,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:04:30,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:04:30,684 INFO L87 Difference]: Start difference. First operand 2108 states and 8511 transitions. Second operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-10-07 15:04:34,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:34,440 INFO L93 Difference]: Finished difference Result 2482 states and 9244 transitions. [2021-10-07 15:04:34,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:04:34,440 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:04:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:34,446 INFO L225 Difference]: With dead ends: 2482 [2021-10-07 15:04:34,446 INFO L226 Difference]: Without dead ends: 2458 [2021-10-07 15:04:34,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3492.4ms TimeCoverageRelationStatistics Valid=412, Invalid=4558, Unknown=0, NotChecked=0, Total=4970 [2021-10-07 15:04:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-10-07 15:04:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2072. [2021-10-07 15:04:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 2070 states have (on average 4.021739130434782) internal successors, (8325), 2071 states have internal predecessors, (8325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 8325 transitions. [2021-10-07 15:04:34,493 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 8325 transitions. Word has length 20 [2021-10-07 15:04:34,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:34,493 INFO L470 AbstractCegarLoop]: Abstraction has 2072 states and 8325 transitions. [2021-10-07 15:04:34,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 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) [2021-10-07 15:04:34,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 8325 transitions. [2021-10-07 15:04:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:04:34,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:34,494 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:34,529 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 [2021-10-07 15:04:34,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:34,695 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:04:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:34,696 INFO L82 PathProgramCache]: Analyzing trace with hash -895142026, now seen corresponding path program 35 times [2021-10-07 15:04:34,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:34,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733008804] [2021-10-07 15:04:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:34,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:38,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:38,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733008804] [2021-10-07 15:04:38,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733008804] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:38,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530742823] [2021-10-07 15:04:38,711 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:04:38,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:38,712 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) [2021-10-07 15:04:38,713 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 [2021-10-07 15:04:41,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:04:41,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:41,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:04:41,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:04:42,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530742823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:42,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:42,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 28 [2021-10-07 15:04:42,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359643859] [2021-10-07 15:04:42,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:04:42,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:42,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:04:42,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:04:42,084 INFO L87 Difference]: Start difference. First operand 2072 states and 8325 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:04:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:45,371 INFO L93 Difference]: Finished difference Result 2290 states and 8931 transitions. [2021-10-07 15:04:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 15:04:45,371 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 20 [2021-10-07 15:04:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:45,377 INFO L225 Difference]: With dead ends: 2290 [2021-10-07 15:04:45,377 INFO L226 Difference]: Without dead ends: 2282 [2021-10-07 15:04:45,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 3629.3ms TimeCoverageRelationStatistics Valid=332, Invalid=2974, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 15:04:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2021-10-07 15:04:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2090. [2021-10-07 15:04:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2088 states have (on average 4.018199233716475) internal successors, (8390), 2089 states have internal predecessors, (8390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:45,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 8390 transitions. [2021-10-07 15:04:45,458 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 8390 transitions. Word has length 20 [2021-10-07 15:04:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:45,458 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 8390 transitions. [2021-10-07 15:04:45,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:04:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 8390 transitions. [2021-10-07 15:04:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:04:45,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:45,460 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:45,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:04:45,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-07 15:04:45,661 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:04:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:45,662 INFO L82 PathProgramCache]: Analyzing trace with hash -895138306, now seen corresponding path program 36 times [2021-10-07 15:04:45,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:45,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602123897] [2021-10-07 15:04:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:45,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:48,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:48,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602123897] [2021-10-07 15:04:48,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602123897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:48,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980023415] [2021-10-07 15:04:48,056 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:04:48,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:48,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:48,057 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) [2021-10-07 15:04:48,058 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 [2021-10-07 15:04:50,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:04:50,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:50,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-07 15:04:50,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:04:51,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980023415] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:51,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:51,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 30 [2021-10-07 15:04:51,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082526312] [2021-10-07 15:04:51,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:04:51,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:04:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:04:51,627 INFO L87 Difference]: Start difference. First operand 2090 states and 8390 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:04:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:53,829 INFO L93 Difference]: Finished difference Result 2266 states and 8843 transitions. [2021-10-07 15:04:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:04:53,830 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:04:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:53,837 INFO L225 Difference]: With dead ends: 2266 [2021-10-07 15:04:53,837 INFO L226 Difference]: Without dead ends: 2262 [2021-10-07 15:04:53,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 2766.6ms TimeCoverageRelationStatistics Valid=220, Invalid=2330, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:04:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-10-07 15:04:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2086. [2021-10-07 15:04:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2084 states have (on average 4.017274472168906) internal successors, (8372), 2085 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 8372 transitions. [2021-10-07 15:04:53,901 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 8372 transitions. Word has length 20 [2021-10-07 15:04:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:53,901 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 8372 transitions. [2021-10-07 15:04:53,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:04:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 8372 transitions. [2021-10-07 15:04:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:04:53,904 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:53,904 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:53,979 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 [2021-10-07 15:04:54,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-07 15:04:54,120 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:04:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:54,120 INFO L82 PathProgramCache]: Analyzing trace with hash -784315786, now seen corresponding path program 37 times [2021-10-07 15:04:54,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:54,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752367683] [2021-10-07 15:04:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:54,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:55,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:55,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752367683] [2021-10-07 15:04:55,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752367683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:55,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084968837] [2021-10-07 15:04:55,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:04:55,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:55,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:55,604 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) [2021-10-07 15:04:55,605 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 [2021-10-07 15:04:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:58,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:04:58,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:04:59,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084968837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:59,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:59,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 30 [2021-10-07 15:04:59,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747675076] [2021-10-07 15:04:59,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:04:59,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:04:59,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:04:59,222 INFO L87 Difference]: Start difference. First operand 2086 states and 8372 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:05:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:02,080 INFO L93 Difference]: Finished difference Result 2582 states and 9629 transitions. [2021-10-07 15:05:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:05:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:05:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:02,086 INFO L225 Difference]: With dead ends: 2582 [2021-10-07 15:05:02,086 INFO L226 Difference]: Without dead ends: 2578 [2021-10-07 15:05:02,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 3185.7ms TimeCoverageRelationStatistics Valid=265, Invalid=3041, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 15:05:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-10-07 15:05:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 2142. [2021-10-07 15:05:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 2140 states have (on average 3.9425233644859814) internal successors, (8437), 2141 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 8437 transitions. [2021-10-07 15:05:02,148 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 8437 transitions. Word has length 20 [2021-10-07 15:05:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:02,149 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 8437 transitions. [2021-10-07 15:05:02,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:05:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 8437 transitions. [2021-10-07 15:05:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:05:02,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:02,151 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:05:02,203 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 [2021-10-07 15:05:02,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:02,367 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:05:02,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:02,367 INFO L82 PathProgramCache]: Analyzing trace with hash -780744710, now seen corresponding path program 38 times [2021-10-07 15:05:02,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:02,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395573951] [2021-10-07 15:05:02,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:02,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:03,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:03,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395573951] [2021-10-07 15:05:03,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395573951] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:03,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218229947] [2021-10-07 15:05:03,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:05:03,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:03,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:03,307 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) [2021-10-07 15:05:03,310 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 [2021-10-07 15:05:05,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:05:05,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:05,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:05:05,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:05:06,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218229947] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:06,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:06,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 28 [2021-10-07 15:05:06,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379539097] [2021-10-07 15:05:06,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:05:06,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:06,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:05:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:05:06,817 INFO L87 Difference]: Start difference. First operand 2142 states and 8437 transitions. Second operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 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) [2021-10-07 15:05:08,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:08,787 INFO L93 Difference]: Finished difference Result 2246 states and 8711 transitions. [2021-10-07 15:05:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:05:08,788 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:05:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:08,793 INFO L225 Difference]: With dead ends: 2246 [2021-10-07 15:05:08,793 INFO L226 Difference]: Without dead ends: 2246 [2021-10-07 15:05:08,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 2287.2ms TimeCoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 15:05:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-10-07 15:05:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2142. [2021-10-07 15:05:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 2140 states have (on average 3.9425233644859814) internal successors, (8437), 2141 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 8437 transitions. [2021-10-07 15:05:08,855 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 8437 transitions. Word has length 20 [2021-10-07 15:05:08,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:08,855 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 8437 transitions. [2021-10-07 15:05:08,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 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) [2021-10-07 15:05:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 8437 transitions. [2021-10-07 15:05:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:05:08,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:08,857 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:05:08,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-10-07 15:05:09,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:09,058 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:05:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash -780744707, now seen corresponding path program 35 times [2021-10-07 15:05:09,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:09,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387300552] [2021-10-07 15:05:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:09,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:10,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:10,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387300552] [2021-10-07 15:05:10,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387300552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:10,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074163431] [2021-10-07 15:05:10,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:05:10,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:10,150 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) [2021-10-07 15:05:10,172 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 [2021-10-07 15:05:12,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:05:12,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:12,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:05:12,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-07 15:05:13,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074163431] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:13,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:13,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 26 [2021-10-07 15:05:13,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237903469] [2021-10-07 15:05:13,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:05:13,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:13,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:05:13,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:05:13,302 INFO L87 Difference]: Start difference. First operand 2142 states and 8437 transitions. Second operand has 28 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 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) [2021-10-07 15:05:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:15,032 INFO L93 Difference]: Finished difference Result 2218 states and 8617 transitions. [2021-10-07 15:05:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:05:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 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 20 [2021-10-07 15:05:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:15,037 INFO L225 Difference]: With dead ends: 2218 [2021-10-07 15:05:15,037 INFO L226 Difference]: Without dead ends: 2218 [2021-10-07 15:05:15,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 2001.8ms TimeCoverageRelationStatistics Valid=264, Invalid=2286, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:05:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2021-10-07 15:05:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2142. [2021-10-07 15:05:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 2140 states have (on average 3.9425233644859814) internal successors, (8437), 2141 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 8437 transitions. [2021-10-07 15:05:15,076 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 8437 transitions. Word has length 20 [2021-10-07 15:05:15,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:15,076 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 8437 transitions. [2021-10-07 15:05:15,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 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) [2021-10-07 15:05:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 8437 transitions. [2021-10-07 15:05:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:05:15,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:15,077 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:05:15,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-07 15:05:15,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:15,278 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:05:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash -780740866, now seen corresponding path program 39 times [2021-10-07 15:05:15,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:15,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111003082] [2021-10-07 15:05:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:15,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:31,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:31,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111003082] [2021-10-07 15:05:31,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111003082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:31,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290499749] [2021-10-07 15:05:31,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:05:31,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:31,181 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) [2021-10-07 15:05:31,182 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 [2021-10-07 15:05:34,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:05:34,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:34,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:05:34,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:05:35,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290499749] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:35,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:35,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 30 [2021-10-07 15:05:35,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545831816] [2021-10-07 15:05:35,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:05:35,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:35,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:05:35,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:05:35,175 INFO L87 Difference]: Start difference. First operand 2142 states and 8437 transitions. Second operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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) [2021-10-07 15:05:38,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:38,352 INFO L93 Difference]: Finished difference Result 2384 states and 9018 transitions. [2021-10-07 15:05:38,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:05:38,353 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:05:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:38,358 INFO L225 Difference]: With dead ends: 2384 [2021-10-07 15:05:38,358 INFO L226 Difference]: Without dead ends: 2376 [2021-10-07 15:05:38,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 3885.1ms TimeCoverageRelationStatistics Valid=239, Invalid=2731, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 15:05:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2021-10-07 15:05:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2168. [2021-10-07 15:05:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2166 states have (on average 3.926131117266851) internal successors, (8504), 2167 states have internal predecessors, (8504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 8504 transitions. [2021-10-07 15:05:38,399 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 8504 transitions. Word has length 20 [2021-10-07 15:05:38,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:38,399 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 8504 transitions. [2021-10-07 15:05:38,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 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) [2021-10-07 15:05:38,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 8504 transitions. [2021-10-07 15:05:38,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:05:38,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:38,400 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:05:38,434 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 [2021-10-07 15:05:38,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:38,601 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:05:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash -780740863, now seen corresponding path program 36 times [2021-10-07 15:05:38,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:38,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116379065] [2021-10-07 15:05:38,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:38,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:39,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:39,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116379065] [2021-10-07 15:05:39,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116379065] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:39,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165650902] [2021-10-07 15:05:39,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:05:39,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:39,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:39,797 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) [2021-10-07 15:05:39,798 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 [2021-10-07 15:05:42,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:05:42,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:42,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:05:42,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:05:43,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165650902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:43,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:43,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 30 [2021-10-07 15:05:43,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237507639] [2021-10-07 15:05:43,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:05:43,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:05:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:05:43,589 INFO L87 Difference]: Start difference. First operand 2168 states and 8504 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:05:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:45,745 INFO L93 Difference]: Finished difference Result 2318 states and 8837 transitions. [2021-10-07 15:05:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:05:45,745 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:05:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:45,750 INFO L225 Difference]: With dead ends: 2318 [2021-10-07 15:05:45,750 INFO L226 Difference]: Without dead ends: 2302 [2021-10-07 15:05:45,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2722.8ms TimeCoverageRelationStatistics Valid=239, Invalid=2517, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 15:05:45,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2021-10-07 15:05:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2168. [2021-10-07 15:05:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2166 states have (on average 3.9132040627885503) internal successors, (8476), 2167 states have internal predecessors, (8476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 8476 transitions. [2021-10-07 15:05:45,791 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 8476 transitions. Word has length 20 [2021-10-07 15:05:45,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:45,791 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 8476 transitions. [2021-10-07 15:05:45,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:05:45,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 8476 transitions. [2021-10-07 15:05:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:05:45,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:45,793 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:05:45,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-10-07 15:05:45,993 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,SelfDestructingSolverStorable84 [2021-10-07 15:05:45,994 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:05:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:45,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1643788682, now seen corresponding path program 40 times [2021-10-07 15:05:45,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:45,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943651690] [2021-10-07 15:05:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:45,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:48,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:48,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943651690] [2021-10-07 15:05:48,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943651690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:48,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639949958] [2021-10-07 15:05:48,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:05:48,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:48,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:48,985 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) [2021-10-07 15:05:48,987 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 [2021-10-07 15:05:51,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:05:51,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:51,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:05:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:05:52,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639949958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:52,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:52,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 30 [2021-10-07 15:05:52,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589108997] [2021-10-07 15:05:52,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:05:52,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:52,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:05:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:05:52,736 INFO L87 Difference]: Start difference. First operand 2168 states and 8476 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:05:54,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:54,644 INFO L93 Difference]: Finished difference Result 2478 states and 9357 transitions. [2021-10-07 15:05:54,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:05:54,644 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:05:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:54,649 INFO L225 Difference]: With dead ends: 2478 [2021-10-07 15:05:54,649 INFO L226 Difference]: Without dead ends: 2478 [2021-10-07 15:05:54,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2365.4ms TimeCoverageRelationStatistics Valid=191, Invalid=1879, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:05:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-10-07 15:05:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2160. [2021-10-07 15:05:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2160 states, 2158 states have (on average 3.9249304911955516) internal successors, (8470), 2159 states have internal predecessors, (8470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 8470 transitions. [2021-10-07 15:05:54,705 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 8470 transitions. Word has length 20 [2021-10-07 15:05:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:54,705 INFO L470 AbstractCegarLoop]: Abstraction has 2160 states and 8470 transitions. [2021-10-07 15:05:54,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:05:54,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 8470 transitions. [2021-10-07 15:05:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:05:54,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:54,707 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:05:54,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-07 15:05:54,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:54,908 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:05:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1643788679, now seen corresponding path program 37 times [2021-10-07 15:05:54,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:54,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971530570] [2021-10-07 15:05:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:54,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:55,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:55,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971530570] [2021-10-07 15:05:55,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971530570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:55,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501885316] [2021-10-07 15:05:55,835 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:05:55,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:55,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:55,839 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) [2021-10-07 15:05:55,843 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 [2021-10-07 15:05:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:58,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:05:58,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:05:59,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501885316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:59,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:59,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 30 [2021-10-07 15:05:59,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336155628] [2021-10-07 15:05:59,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:05:59,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:59,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:05:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:05:59,577 INFO L87 Difference]: Start difference. First operand 2160 states and 8470 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:06:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:01,328 INFO L93 Difference]: Finished difference Result 2426 states and 9145 transitions. [2021-10-07 15:06:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:06:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:06:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:01,336 INFO L225 Difference]: With dead ends: 2426 [2021-10-07 15:06:01,336 INFO L226 Difference]: Without dead ends: 2414 [2021-10-07 15:06:01,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 2006.4ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:06:01,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2021-10-07 15:06:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2150. [2021-10-07 15:06:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2148 states have (on average 3.926908752327747) internal successors, (8435), 2149 states have internal predecessors, (8435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:01,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8435 transitions. [2021-10-07 15:06:01,402 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8435 transitions. Word has length 20 [2021-10-07 15:06:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:01,402 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 8435 transitions. [2021-10-07 15:06:01,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:06:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8435 transitions. [2021-10-07 15:06:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:06:01,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:01,403 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:01,438 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 [2021-10-07 15:06:01,603 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,SelfDestructingSolverStorable86 [2021-10-07 15:06:01,604 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:06:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:01,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1640213762, now seen corresponding path program 41 times [2021-10-07 15:06:01,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:01,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167610710] [2021-10-07 15:06:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:01,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:11,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:11,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167610710] [2021-10-07 15:06:11,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167610710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:11,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569478299] [2021-10-07 15:06:11,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:06:11,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:11,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:11,691 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) [2021-10-07 15:06:11,692 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 [2021-10-07 15:06:14,559 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:06:14,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:14,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:06:14,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:06:15,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569478299] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:15,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:15,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 31 [2021-10-07 15:06:15,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157186478] [2021-10-07 15:06:15,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-07 15:06:15,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:15,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-07 15:06:15,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:06:15,757 INFO L87 Difference]: Start difference. First operand 2150 states and 8435 transitions. Second operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 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) [2021-10-07 15:06:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:21,509 INFO L93 Difference]: Finished difference Result 2316 states and 8876 transitions. [2021-10-07 15:06:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:06:21,509 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:06:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:21,514 INFO L225 Difference]: With dead ends: 2316 [2021-10-07 15:06:21,515 INFO L226 Difference]: Without dead ends: 2316 [2021-10-07 15:06:21,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 7228.5ms TimeCoverageRelationStatistics Valid=348, Invalid=3192, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 15:06:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-10-07 15:06:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2154. [2021-10-07 15:06:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2152 states have (on average 3.9270446096654275) internal successors, (8451), 2153 states have internal predecessors, (8451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 8451 transitions. [2021-10-07 15:06:21,556 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 8451 transitions. Word has length 20 [2021-10-07 15:06:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:21,556 INFO L470 AbstractCegarLoop]: Abstraction has 2154 states and 8451 transitions. [2021-10-07 15:06:21,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 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) [2021-10-07 15:06:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 8451 transitions. [2021-10-07 15:06:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:06:21,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:21,558 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:21,594 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 [2021-10-07 15:06:21,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-07 15:06:21,759 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:06:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:21,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1640213759, now seen corresponding path program 38 times [2021-10-07 15:06:21,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:21,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941769] [2021-10-07 15:06:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:21,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:22,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:22,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941769] [2021-10-07 15:06:22,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941769] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:22,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090478528] [2021-10-07 15:06:22,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:06:22,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:22,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:22,617 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) [2021-10-07 15:06:22,620 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 [2021-10-07 15:06:25,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:06:25,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:25,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:06:25,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:06:26,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090478528] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:26,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:26,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 30 [2021-10-07 15:06:26,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655779203] [2021-10-07 15:06:26,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:06:26,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:06:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:06:26,499 INFO L87 Difference]: Start difference. First operand 2154 states and 8451 transitions. Second operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:06:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:28,395 INFO L93 Difference]: Finished difference Result 2280 states and 8754 transitions. [2021-10-07 15:06:28,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:06:28,396 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 15:06:28,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:28,401 INFO L225 Difference]: With dead ends: 2280 [2021-10-07 15:06:28,401 INFO L226 Difference]: Without dead ends: 2272 [2021-10-07 15:06:28,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2357.6ms TimeCoverageRelationStatistics Valid=271, Invalid=2279, Unknown=0, NotChecked=0, Total=2550 [2021-10-07 15:06:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2021-10-07 15:06:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2150. [2021-10-07 15:06:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2148 states have (on average 3.926908752327747) internal successors, (8435), 2149 states have internal predecessors, (8435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 8435 transitions. [2021-10-07 15:06:28,443 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 8435 transitions. Word has length 20 [2021-10-07 15:06:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:28,443 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 8435 transitions. [2021-10-07 15:06:28,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 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) [2021-10-07 15:06:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 8435 transitions. [2021-10-07 15:06:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:06:28,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:28,444 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:28,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:28,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:28,645 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:06:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:28,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1087686290, now seen corresponding path program 42 times [2021-10-07 15:06:28,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:28,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636006272] [2021-10-07 15:06:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:28,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:29,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:29,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636006272] [2021-10-07 15:06:29,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636006272] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:29,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167813568] [2021-10-07 15:06:29,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:06:29,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:29,718 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) [2021-10-07 15:06:29,723 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 [2021-10-07 15:06:32,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:06:32,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:32,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:06:32,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:33,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167813568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:33,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:33,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2021-10-07 15:06:33,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819507347] [2021-10-07 15:06:33,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:06:33,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:06:33,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1148, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:06:33,933 INFO L87 Difference]: Start difference. First operand 2150 states and 8435 transitions. Second operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2021-10-07 15:06:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:44,705 INFO L93 Difference]: Finished difference Result 6490 states and 23864 transitions. [2021-10-07 15:06:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-07 15:06:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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 21 [2021-10-07 15:06:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:44,722 INFO L225 Difference]: With dead ends: 6490 [2021-10-07 15:06:44,722 INFO L226 Difference]: Without dead ends: 6436 [2021-10-07 15:06:44,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2579 ImplicationChecksByTransitivity, 9169.2ms TimeCoverageRelationStatistics Valid=942, Invalid=9360, Unknown=0, NotChecked=0, Total=10302 [2021-10-07 15:06:44,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6436 states. [2021-10-07 15:06:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6436 to 4726. [2021-10-07 15:06:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4726 states, 4724 states have (on average 4.006985605419136) internal successors, (18929), 4725 states have internal predecessors, (18929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 18929 transitions. [2021-10-07 15:06:44,849 INFO L78 Accepts]: Start accepts. Automaton has 4726 states and 18929 transitions. Word has length 21 [2021-10-07 15:06:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:44,849 INFO L470 AbstractCegarLoop]: Abstraction has 4726 states and 18929 transitions. [2021-10-07 15:06:44,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2021-10-07 15:06:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states and 18929 transitions. [2021-10-07 15:06:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:06:44,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:44,851 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:44,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-07 15:06:45,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:45,053 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:06:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:45,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1087686293, now seen corresponding path program 39 times [2021-10-07 15:06:45,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:45,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691396852] [2021-10-07 15:06:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:45,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:46,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:46,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691396852] [2021-10-07 15:06:46,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691396852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:46,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041559635] [2021-10-07 15:06:46,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:06:46,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:46,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:46,199 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) [2021-10-07 15:06:46,201 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 [2021-10-07 15:06:49,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:06:49,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:49,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:06:49,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:06:50,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041559635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:50,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:50,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 28 [2021-10-07 15:06:50,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227985857] [2021-10-07 15:06:50,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:06:50,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:06:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:06:50,194 INFO L87 Difference]: Start difference. First operand 4726 states and 18929 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:06:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:55,390 INFO L93 Difference]: Finished difference Result 3888 states and 14598 transitions. [2021-10-07 15:06:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-07 15:06:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 21 [2021-10-07 15:06:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:55,400 INFO L225 Difference]: With dead ends: 3888 [2021-10-07 15:06:55,400 INFO L226 Difference]: Without dead ends: 3864 [2021-10-07 15:06:55,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 4801.8ms TimeCoverageRelationStatistics Valid=509, Invalid=3781, Unknown=0, NotChecked=0, Total=4290 [2021-10-07 15:06:55,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2021-10-07 15:06:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 2940. [2021-10-07 15:06:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2938 states have (on average 4.018379850238257) internal successors, (11806), 2939 states have internal predecessors, (11806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 11806 transitions. [2021-10-07 15:06:55,557 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 11806 transitions. Word has length 21 [2021-10-07 15:06:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:55,557 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 11806 transitions. [2021-10-07 15:06:55,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:06:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 11806 transitions. [2021-10-07 15:06:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:06:55,558 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:55,558 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:55,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:55,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:55,759 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:06:55,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1198508810, now seen corresponding path program 43 times [2021-10-07 15:06:55,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:55,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323195476] [2021-10-07 15:06:55,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:55,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:06:56,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:56,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323195476] [2021-10-07 15:06:56,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323195476] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:56,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454143571] [2021-10-07 15:06:56,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:06:56,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:56,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:56,490 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) [2021-10-07 15:06:56,491 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 [2021-10-07 15:06:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:59,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 61 conjunts are in the unsatisfiable core [2021-10-07 15:06:59,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:00,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454143571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:00,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:00,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 33 [2021-10-07 15:07:00,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610172875] [2021-10-07 15:07:00,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-07 15:07:00,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-07 15:07:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1024, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:07:00,935 INFO L87 Difference]: Start difference. First operand 2940 states and 11806 transitions. Second operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 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) [2021-10-07 15:07:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:02,909 INFO L93 Difference]: Finished difference Result 3806 states and 14548 transitions. [2021-10-07 15:07:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:07:02,910 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 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 21 [2021-10-07 15:07:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:02,919 INFO L225 Difference]: With dead ends: 3806 [2021-10-07 15:07:02,919 INFO L226 Difference]: Without dead ends: 3806 [2021-10-07 15:07:02,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 2372.0ms TimeCoverageRelationStatistics Valid=491, Invalid=2371, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 15:07:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-10-07 15:07:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3228. [2021-10-07 15:07:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3228 states, 3226 states have (on average 4.020458772473652) internal successors, (12970), 3227 states have internal predecessors, (12970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:03,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3228 states to 3228 states and 12970 transitions. [2021-10-07 15:07:03,000 INFO L78 Accepts]: Start accepts. Automaton has 3228 states and 12970 transitions. Word has length 21 [2021-10-07 15:07:03,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:07:03,000 INFO L470 AbstractCegarLoop]: Abstraction has 3228 states and 12970 transitions. [2021-10-07 15:07:03,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 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) [2021-10-07 15:07:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3228 states and 12970 transitions. [2021-10-07 15:07:03,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:07:03,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:07:03,002 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:07:03,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-10-07 15:07:03,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:03,203 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:07:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:07:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1198508813, now seen corresponding path program 40 times [2021-10-07 15:07:03,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:07:03,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301831723] [2021-10-07 15:07:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:07:03,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:07:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:04,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:04,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301831723] [2021-10-07 15:07:04,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301831723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:04,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650987031] [2021-10-07 15:07:04,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:07:04,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:04,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:04,844 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) [2021-10-07 15:07:04,845 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 [2021-10-07 15:07:07,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:07:07,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:07,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-07 15:07:07,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:09,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650987031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:09,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:09,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 35 [2021-10-07 15:07:09,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199163432] [2021-10-07 15:07:09,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:07:09,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:09,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:07:09,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:07:09,348 INFO L87 Difference]: Start difference. First operand 3228 states and 12970 transitions. Second operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:14,533 INFO L93 Difference]: Finished difference Result 3804 states and 14665 transitions. [2021-10-07 15:07:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:07:14,534 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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 21 [2021-10-07 15:07:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:14,543 INFO L225 Difference]: With dead ends: 3804 [2021-10-07 15:07:14,543 INFO L226 Difference]: Without dead ends: 3764 [2021-10-07 15:07:14,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 5650.0ms TimeCoverageRelationStatistics Valid=501, Invalid=4329, Unknown=0, NotChecked=0, Total=4830 [2021-10-07 15:07:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-10-07 15:07:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3250. [2021-10-07 15:07:14,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 3248 states have (on average 4.026169950738916) internal successors, (13077), 3249 states have internal predecessors, (13077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 13077 transitions. [2021-10-07 15:07:14,622 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 13077 transitions. Word has length 21 [2021-10-07 15:07:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:07:14,622 INFO L470 AbstractCegarLoop]: Abstraction has 3250 states and 13077 transitions. [2021-10-07 15:07:14,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 13077 transitions. [2021-10-07 15:07:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:07:14,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:07:14,624 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:07:14,662 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 [2021-10-07 15:07:14,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:14,824 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:07:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:07:14,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1202199050, now seen corresponding path program 44 times [2021-10-07 15:07:14,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:07:14,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899078699] [2021-10-07 15:07:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:07:14,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:07:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:15,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:15,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899078699] [2021-10-07 15:07:15,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899078699] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:15,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355152247] [2021-10-07 15:07:15,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:07:15,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:15,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:15,309 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) [2021-10-07 15:07:15,310 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 [2021-10-07 15:07:18,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:07:18,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:18,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 65 conjunts are in the unsatisfiable core [2021-10-07 15:07:18,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:18,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:07:18,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 138 [2021-10-07 15:07:18,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:07:18,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:07:18,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:07:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:20,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355152247] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:20,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:20,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 35 [2021-10-07 15:07:20,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736305798] [2021-10-07 15:07:20,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:07:20,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:20,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:07:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:07:20,023 INFO L87 Difference]: Start difference. First operand 3250 states and 13077 transitions. Second operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:24,645 INFO L93 Difference]: Finished difference Result 4324 states and 16312 transitions. [2021-10-07 15:07:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-07 15:07:24,646 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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 21 [2021-10-07 15:07:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:24,656 INFO L225 Difference]: With dead ends: 4324 [2021-10-07 15:07:24,656 INFO L226 Difference]: Without dead ends: 4312 [2021-10-07 15:07:24,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 4066.3ms TimeCoverageRelationStatistics Valid=554, Invalid=5298, Unknown=0, NotChecked=0, Total=5852 [2021-10-07 15:07:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2021-10-07 15:07:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 3606. [2021-10-07 15:07:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3604 states have (on average 4.073529411764706) internal successors, (14681), 3605 states have internal predecessors, (14681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 14681 transitions. [2021-10-07 15:07:24,849 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 14681 transitions. Word has length 21 [2021-10-07 15:07:24,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:07:24,849 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 14681 transitions. [2021-10-07 15:07:24,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 14681 transitions. [2021-10-07 15:07:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:07:24,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:07:24,851 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:07:24,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-10-07 15:07:25,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:25,052 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:07:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:07:25,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1202199053, now seen corresponding path program 41 times [2021-10-07 15:07:25,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:07:25,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664527797] [2021-10-07 15:07:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:07:25,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:07:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:07:25,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:25,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664527797] [2021-10-07 15:07:25,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664527797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:25,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970759039] [2021-10-07 15:07:25,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:07:25,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:25,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:25,785 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) [2021-10-07 15:07:25,786 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 [2021-10-07 15:07:28,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:07:28,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:28,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:07:28,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:30,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970759039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:30,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:30,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 31 [2021-10-07 15:07:30,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423503172] [2021-10-07 15:07:30,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-07 15:07:30,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-07 15:07:30,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:07:30,030 INFO L87 Difference]: Start difference. First operand 3606 states and 14681 transitions. Second operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2021-10-07 15:07:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:35,053 INFO L93 Difference]: Finished difference Result 4733 states and 18807 transitions. [2021-10-07 15:07:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 15:07:35,053 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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 21 [2021-10-07 15:07:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:35,067 INFO L225 Difference]: With dead ends: 4733 [2021-10-07 15:07:35,068 INFO L226 Difference]: Without dead ends: 4715 [2021-10-07 15:07:35,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 4873.8ms TimeCoverageRelationStatistics Valid=637, Invalid=4475, Unknown=0, NotChecked=0, Total=5112 [2021-10-07 15:07:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2021-10-07 15:07:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4116. [2021-10-07 15:07:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4116 states, 4114 states have (on average 4.1934856587263) internal successors, (17252), 4115 states have internal predecessors, (17252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4116 states to 4116 states and 17252 transitions. [2021-10-07 15:07:35,163 INFO L78 Accepts]: Start accepts. Automaton has 4116 states and 17252 transitions. Word has length 21 [2021-10-07 15:07:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:07:35,163 INFO L470 AbstractCegarLoop]: Abstraction has 4116 states and 17252 transitions. [2021-10-07 15:07:35,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2021-10-07 15:07:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4116 states and 17252 transitions. [2021-10-07 15:07:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:07:35,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:07:35,164 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:07:35,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-07 15:07:35,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:35,365 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:07:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:07:35,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1202202770, now seen corresponding path program 45 times [2021-10-07 15:07:35,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:07:35,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874795653] [2021-10-07 15:07:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:07:35,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:07:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:36,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:36,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874795653] [2021-10-07 15:07:36,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874795653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:36,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823917407] [2021-10-07 15:07:36,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:07:36,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:36,002 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) [2021-10-07 15:07:36,004 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 [2021-10-07 15:07:39,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 15:07:39,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:39,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 68 conjunts are in the unsatisfiable core [2021-10-07 15:07:39,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:39,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:07:39,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 234 treesize of output 226 [2021-10-07 15:07:39,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:07:40,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:07:40,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:07:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:41,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823917407] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:41,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:41,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 35 [2021-10-07 15:07:41,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065597836] [2021-10-07 15:07:41,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:07:41,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:07:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:07:41,341 INFO L87 Difference]: Start difference. First operand 4116 states and 17252 transitions. Second operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:43,169 INFO L93 Difference]: Finished difference Result 4534 states and 18103 transitions. [2021-10-07 15:07:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:07:43,169 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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 21 [2021-10-07 15:07:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:43,180 INFO L225 Difference]: With dead ends: 4534 [2021-10-07 15:07:43,181 INFO L226 Difference]: Without dead ends: 4534 [2021-10-07 15:07:43,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2076.2ms TimeCoverageRelationStatistics Valid=298, Invalid=2458, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 15:07:43,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2021-10-07 15:07:43,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 4022. [2021-10-07 15:07:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4022 states, 4020 states have (on average 4.185323383084577) internal successors, (16825), 4021 states have internal predecessors, (16825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 16825 transitions. [2021-10-07 15:07:43,269 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 16825 transitions. Word has length 21 [2021-10-07 15:07:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:07:43,269 INFO L470 AbstractCegarLoop]: Abstraction has 4022 states and 16825 transitions. [2021-10-07 15:07:43,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 16825 transitions. [2021-10-07 15:07:43,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:07:43,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:07:43,270 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:07:43,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-07 15:07:43,471 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,SelfDestructingSolverStorable95 [2021-10-07 15:07:43,471 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:07:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:07:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1202202773, now seen corresponding path program 42 times [2021-10-07 15:07:43,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:07:43,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22675003] [2021-10-07 15:07:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:07:43,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:07:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:45,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:45,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22675003] [2021-10-07 15:07:45,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22675003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:45,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209225380] [2021-10-07 15:07:45,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:07:45,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:45,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:45,088 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) [2021-10-07 15:07:45,090 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 [2021-10-07 15:07:48,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:07:48,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:48,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-07 15:07:48,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:48,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 15:07:48,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:07:48,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:07:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:50,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209225380] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:50,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:50,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 35 [2021-10-07 15:07:50,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716858365] [2021-10-07 15:07:50,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:07:50,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:50,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:07:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:07:50,473 INFO L87 Difference]: Start difference. First operand 4022 states and 16825 transitions. Second operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:53,523 INFO L93 Difference]: Finished difference Result 4844 states and 19966 transitions. [2021-10-07 15:07:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:07:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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 21 [2021-10-07 15:07:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:53,535 INFO L225 Difference]: With dead ends: 4844 [2021-10-07 15:07:53,536 INFO L226 Difference]: Without dead ends: 4840 [2021-10-07 15:07:53,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3646.4ms TimeCoverageRelationStatistics Valid=309, Invalid=2997, Unknown=0, NotChecked=0, Total=3306 [2021-10-07 15:07:53,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2021-10-07 15:07:53,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 4464. [2021-10-07 15:07:53,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4462 states have (on average 4.213805468399821) internal successors, (18802), 4463 states have internal predecessors, (18802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 18802 transitions. [2021-10-07 15:07:53,628 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 18802 transitions. Word has length 21 [2021-10-07 15:07:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:07:53,628 INFO L470 AbstractCegarLoop]: Abstraction has 4464 states and 18802 transitions. [2021-10-07 15:07:53,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:07:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 18802 transitions. [2021-10-07 15:07:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:07:53,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:07:53,630 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:07:53,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-07 15:07:53,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:53,831 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:07:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:07:53,831 INFO L82 PathProgramCache]: Analyzing trace with hash 339039634, now seen corresponding path program 46 times [2021-10-07 15:07:53,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:07:53,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107236125] [2021-10-07 15:07:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:07:53,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:07:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:54,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:54,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107236125] [2021-10-07 15:07:54,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107236125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:54,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169813168] [2021-10-07 15:07:54,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:07:54,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:54,437 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) [2021-10-07 15:07:54,441 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 [2021-10-07 15:07:57,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:07:57,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:57,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:07:57,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:59,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169813168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:59,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:59,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2021-10-07 15:07:59,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43131580] [2021-10-07 15:07:59,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:07:59,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:07:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1143, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:07:59,209 INFO L87 Difference]: Start difference. First operand 4464 states and 18802 transitions. Second operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2021-10-07 15:08:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:09,515 INFO L93 Difference]: Finished difference Result 10764 states and 41454 transitions. [2021-10-07 15:08:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-10-07 15:08:09,516 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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 21 [2021-10-07 15:08:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:09,545 INFO L225 Difference]: With dead ends: 10764 [2021-10-07 15:08:09,546 INFO L226 Difference]: Without dead ends: 10760 [2021-10-07 15:08:09,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6957 ImplicationChecksByTransitivity, 7623.9ms TimeCoverageRelationStatistics Valid=1617, Invalid=18689, Unknown=0, NotChecked=0, Total=20306 [2021-10-07 15:08:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10760 states. [2021-10-07 15:08:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10760 to 7014. [2021-10-07 15:08:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7014 states, 7012 states have (on average 4.334141471762693) internal successors, (30391), 7013 states have internal predecessors, (30391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7014 states to 7014 states and 30391 transitions. [2021-10-07 15:08:09,840 INFO L78 Accepts]: Start accepts. Automaton has 7014 states and 30391 transitions. Word has length 21 [2021-10-07 15:08:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:09,840 INFO L470 AbstractCegarLoop]: Abstraction has 7014 states and 30391 transitions. [2021-10-07 15:08:09,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2021-10-07 15:08:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7014 states and 30391 transitions. [2021-10-07 15:08:09,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:08:09,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:09,842 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:09,880 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 [2021-10-07 15:08:10,043 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,SelfDestructingSolverStorable97 [2021-10-07 15:08:10,043 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:08:10,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:10,045 INFO L82 PathProgramCache]: Analyzing trace with hash 339039637, now seen corresponding path program 43 times [2021-10-07 15:08:10,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:10,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812505198] [2021-10-07 15:08:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:10,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:10,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:10,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812505198] [2021-10-07 15:08:10,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812505198] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:10,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808152232] [2021-10-07 15:08:10,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:08:10,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:10,707 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) [2021-10-07 15:08:10,708 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 [2021-10-07 15:08:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:13,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-07 15:08:13,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:17,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808152232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:17,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:17,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34 [2021-10-07 15:08:17,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637623080] [2021-10-07 15:08:17,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:08:17,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:17,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:08:17,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1135, Unknown=1, NotChecked=0, Total=1260 [2021-10-07 15:08:17,711 INFO L87 Difference]: Start difference. First operand 7014 states and 30391 transitions. Second operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2021-10-07 15:08:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:27,842 INFO L93 Difference]: Finished difference Result 13166 states and 53579 transitions. [2021-10-07 15:08:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-07 15:08:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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 21 [2021-10-07 15:08:27,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:27,884 INFO L225 Difference]: With dead ends: 13166 [2021-10-07 15:08:27,884 INFO L226 Difference]: Without dead ends: 13134 [2021-10-07 15:08:27,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 11232.9ms TimeCoverageRelationStatistics Valid=673, Invalid=5177, Unknown=2, NotChecked=0, Total=5852 [2021-10-07 15:08:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13134 states. [2021-10-07 15:08:28,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13134 to 10052. [2021-10-07 15:08:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10052 states, 10050 states have (on average 4.26228855721393) internal successors, (42836), 10051 states have internal predecessors, (42836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 42836 transitions. [2021-10-07 15:08:28,211 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 42836 transitions. Word has length 21 [2021-10-07 15:08:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:28,211 INFO L470 AbstractCegarLoop]: Abstraction has 10052 states and 42836 transitions. [2021-10-07 15:08:28,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 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) [2021-10-07 15:08:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 42836 transitions. [2021-10-07 15:08:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:08:28,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:28,213 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:28,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-10-07 15:08:28,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:28,413 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:08:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:28,415 INFO L82 PathProgramCache]: Analyzing trace with hash 342614557, now seen corresponding path program 44 times [2021-10-07 15:08:28,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:28,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202206456] [2021-10-07 15:08:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:28,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:29,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:29,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202206456] [2021-10-07 15:08:29,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202206456] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:29,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274440571] [2021-10-07 15:08:29,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:08:29,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:29,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:29,902 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) [2021-10-07 15:08:29,903 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 [2021-10-07 15:08:33,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:08:33,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:33,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 59 conjunts are in the unsatisfiable core [2021-10-07 15:08:33,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:33,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:08:33,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:08:33,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:08:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:35,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274440571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:35,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:35,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2021-10-07 15:08:35,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266005472] [2021-10-07 15:08:35,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-07 15:08:35,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:35,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-07 15:08:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:08:35,247 INFO L87 Difference]: Start difference. First operand 10052 states and 42836 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) [2021-10-07 15:08:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:42,116 INFO L93 Difference]: Finished difference Result 12806 states and 53257 transitions. [2021-10-07 15:08:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-07 15:08:42,117 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 21 [2021-10-07 15:08:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:42,158 INFO L225 Difference]: With dead ends: 12806 [2021-10-07 15:08:42,158 INFO L226 Difference]: Without dead ends: 12796 [2021-10-07 15:08:42,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 7047.8ms TimeCoverageRelationStatistics Valid=801, Invalid=6005, Unknown=0, NotChecked=0, Total=6806 [2021-10-07 15:08:42,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12796 states. [2021-10-07 15:08:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12796 to 11564. [2021-10-07 15:08:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11564 states, 11562 states have (on average 4.340598512368103) internal successors, (50186), 11563 states have internal predecessors, (50186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:08:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11564 states to 11564 states and 50186 transitions. [2021-10-07 15:08:42,482 INFO L78 Accepts]: Start accepts. Automaton has 11564 states and 50186 transitions. Word has length 21 [2021-10-07 15:08:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:08:42,482 INFO L470 AbstractCegarLoop]: Abstraction has 11564 states and 50186 transitions. [2021-10-07 15:08:42,482 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) [2021-10-07 15:08:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 11564 states and 50186 transitions. [2021-10-07 15:08:42,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:08:42,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:08:42,484 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:08:42,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-07 15:08:42,692 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,SelfDestructingSolverStorable99 [2021-10-07 15:08:42,692 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:08:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:08:42,693 INFO L82 PathProgramCache]: Analyzing trace with hash 342729874, now seen corresponding path program 47 times [2021-10-07 15:08:42,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:08:42,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250570812] [2021-10-07 15:08:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:08:42,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:08:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:08:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:44,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:08:44,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250570812] [2021-10-07 15:08:44,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250570812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:44,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076298285] [2021-10-07 15:08:44,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:08:44,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:08:44,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:08:44,306 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) [2021-10-07 15:08:44,307 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 [2021-10-07 15:08:47,736 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:08:47,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:08:47,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-07 15:08:47,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:08:47,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 134 [2021-10-07 15:08:48,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-10-07 15:08:48,192 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:48,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:08:48,299 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-07 15:08:48,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-10-07 15:08:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:08:49,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076298285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:08:49,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:08:49,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 35 [2021-10-07 15:08:49,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625558022] [2021-10-07 15:08:49,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:08:49,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:08:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:08:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:08:49,931 INFO L87 Difference]: Start difference. First operand 11564 states and 50186 transitions. Second operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:08:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:08:59,468 INFO L93 Difference]: Finished difference Result 24112 states and 102729 transitions. [2021-10-07 15:08:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-07 15:08:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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 21 [2021-10-07 15:08:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:08:59,560 INFO L225 Difference]: With dead ends: 24112 [2021-10-07 15:08:59,560 INFO L226 Difference]: Without dead ends: 24070 [2021-10-07 15:08:59,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 9346.4ms TimeCoverageRelationStatistics Valid=937, Invalid=6719, Unknown=0, NotChecked=0, Total=7656 [2021-10-07 15:08:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24070 states. [2021-10-07 15:09:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24070 to 20520. [2021-10-07 15:09:00,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20520 states, 20518 states have (on average 4.437177112779024) internal successors, (91042), 20519 states have internal predecessors, (91042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20520 states to 20520 states and 91042 transitions. [2021-10-07 15:09:00,432 INFO L78 Accepts]: Start accepts. Automaton has 20520 states and 91042 transitions. Word has length 21 [2021-10-07 15:09:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:00,432 INFO L470 AbstractCegarLoop]: Abstraction has 20520 states and 91042 transitions. [2021-10-07 15:09:00,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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) [2021-10-07 15:09:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 20520 states and 91042 transitions. [2021-10-07 15:09:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:09:00,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:00,434 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:00,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2021-10-07 15:09:00,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:00,634 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:09:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 342729877, now seen corresponding path program 45 times [2021-10-07 15:09:00,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:00,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115316504] [2021-10-07 15:09:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:00,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:02,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:02,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115316504] [2021-10-07 15:09:02,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115316504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:02,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491881885] [2021-10-07 15:09:02,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:09:02,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:02,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:02,579 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) [2021-10-07 15:09:02,580 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 [2021-10-07 15:09:06,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:09:06,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:06,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:09:06,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-07 15:09:07,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491881885] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:07,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:07,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 28 [2021-10-07 15:09:07,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713128485] [2021-10-07 15:09:07,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:09:07,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:07,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:09:07,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:09:07,292 INFO L87 Difference]: Start difference. First operand 20520 states and 91042 transitions. Second operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:09:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:15,650 INFO L93 Difference]: Finished difference Result 36642 states and 160573 transitions. [2021-10-07 15:09:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-07 15:09:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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 21 [2021-10-07 15:09:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:15,802 INFO L225 Difference]: With dead ends: 36642 [2021-10-07 15:09:15,803 INFO L226 Difference]: Without dead ends: 36616 [2021-10-07 15:09:15,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 7130.5ms TimeCoverageRelationStatistics Valid=538, Invalid=5314, Unknown=0, NotChecked=0, Total=5852 [2021-10-07 15:09:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36616 states. [2021-10-07 15:09:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36616 to 33140. [2021-10-07 15:09:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33140 states, 33138 states have (on average 4.511738789305329) internal successors, (149510), 33139 states have internal predecessors, (149510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33140 states to 33140 states and 149510 transitions. [2021-10-07 15:09:17,052 INFO L78 Accepts]: Start accepts. Automaton has 33140 states and 149510 transitions. Word has length 21 [2021-10-07 15:09:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:17,053 INFO L470 AbstractCegarLoop]: Abstraction has 33140 states and 149510 transitions. [2021-10-07 15:09:17,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-10-07 15:09:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 33140 states and 149510 transitions. [2021-10-07 15:09:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:09:17,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:17,054 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:17,093 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 [2021-10-07 15:09:17,254 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,SelfDestructingSolverStorable101 [2021-10-07 15:09:17,255 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:09:17,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:17,257 INFO L82 PathProgramCache]: Analyzing trace with hash 342733597, now seen corresponding path program 46 times [2021-10-07 15:09:17,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:17,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787497070] [2021-10-07 15:09:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:17,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:09:18,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:18,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787497070] [2021-10-07 15:09:18,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787497070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:18,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649402584] [2021-10-07 15:09:18,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:09:18,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:18,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:18,561 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) [2021-10-07 15:09:18,562 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 [2021-10-07 15:09:22,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:09:22,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:22,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:09:22,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:24,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649402584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:24,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:24,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 32 [2021-10-07 15:09:24,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292952815] [2021-10-07 15:09:24,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:09:24,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:24,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:09:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:09:24,623 INFO L87 Difference]: Start difference. First operand 33140 states and 149510 transitions. Second operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 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) [2021-10-07 15:09:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:31,548 INFO L93 Difference]: Finished difference Result 38868 states and 163324 transitions. [2021-10-07 15:09:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:09:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 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 21 [2021-10-07 15:09:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:31,695 INFO L225 Difference]: With dead ends: 38868 [2021-10-07 15:09:31,695 INFO L226 Difference]: Without dead ends: 38846 [2021-10-07 15:09:31,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 7041.4ms TimeCoverageRelationStatistics Valid=453, Invalid=3707, Unknown=0, NotChecked=0, Total=4160 [2021-10-07 15:09:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38846 states. [2021-10-07 15:09:32,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38846 to 30944. [2021-10-07 15:09:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30944 states, 30942 states have (on average 4.277939370435007) internal successors, (132368), 30943 states have internal predecessors, (132368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30944 states to 30944 states and 132368 transitions. [2021-10-07 15:09:33,073 INFO L78 Accepts]: Start accepts. Automaton has 30944 states and 132368 transitions. Word has length 21 [2021-10-07 15:09:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:33,073 INFO L470 AbstractCegarLoop]: Abstraction has 30944 states and 132368 transitions. [2021-10-07 15:09:33,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 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) [2021-10-07 15:09:33,074 INFO L276 IsEmpty]: Start isEmpty. Operand 30944 states and 132368 transitions. [2021-10-07 15:09:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:09:33,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:33,075 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:33,113 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 [2021-10-07 15:09:33,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102,100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:33,276 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:09:33,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:33,277 INFO L82 PathProgramCache]: Analyzing trace with hash 453552397, now seen corresponding path program 47 times [2021-10-07 15:09:33,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:33,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091986342] [2021-10-07 15:09:33,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:33,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:34,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:34,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091986342] [2021-10-07 15:09:34,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091986342] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:34,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510182508] [2021-10-07 15:09:34,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:09:34,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:34,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:34,772 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) [2021-10-07 15:09:34,773 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 [2021-10-07 15:09:38,408 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 15:09:38,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:38,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 64 conjunts are in the unsatisfiable core [2021-10-07 15:09:38,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:38,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:09:38,899 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:09:38,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 15:09:39,010 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-07 15:09:39,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-10-07 15:09:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:40,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510182508] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:40,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:40,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2021-10-07 15:09:40,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922400988] [2021-10-07 15:09:40,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-07 15:09:40,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:40,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-07 15:09:40,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:09:40,457 INFO L87 Difference]: Start difference. First operand 30944 states and 132368 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) [2021-10-07 15:09:43,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:43,984 INFO L93 Difference]: Finished difference Result 34528 states and 144172 transitions. [2021-10-07 15:09:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:09:43,984 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 21 [2021-10-07 15:09:43,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:44,124 INFO L225 Difference]: With dead ends: 34528 [2021-10-07 15:09:44,124 INFO L226 Difference]: Without dead ends: 34498 [2021-10-07 15:09:44,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 3829.2ms TimeCoverageRelationStatistics Valid=439, Invalid=3593, Unknown=0, NotChecked=0, Total=4032 [2021-10-07 15:09:44,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34498 states. [2021-10-07 15:09:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34498 to 31510. [2021-10-07 15:09:45,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31510 states, 31508 states have (on average 4.27424781007998) internal successors, (134673), 31509 states have internal predecessors, (134673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:09:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31510 states to 31510 states and 134673 transitions. [2021-10-07 15:09:45,562 INFO L78 Accepts]: Start accepts. Automaton has 31510 states and 134673 transitions. Word has length 21 [2021-10-07 15:09:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:09:45,562 INFO L470 AbstractCegarLoop]: Abstraction has 31510 states and 134673 transitions. [2021-10-07 15:09:45,562 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) [2021-10-07 15:09:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 31510 states and 134673 transitions. [2021-10-07 15:09:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:09:45,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:09:45,564 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:09:45,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2021-10-07 15:09:45,778 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,SelfDestructingSolverStorable103 [2021-10-07 15:09:45,779 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:09:45,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:09:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash 457127314, now seen corresponding path program 48 times [2021-10-07 15:09:45,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:09:45,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587711769] [2021-10-07 15:09:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:09:45,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:09:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:09:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:47,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:09:47,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587711769] [2021-10-07 15:09:47,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587711769] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:47,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730926994] [2021-10-07 15:09:47,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:09:47,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:09:47,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:09:47,837 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) [2021-10-07 15:09:47,838 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 [2021-10-07 15:09:51,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:09:51,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:09:51,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 62 conjunts are in the unsatisfiable core [2021-10-07 15:09:51,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:09:51,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:09:51,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2021-10-07 15:09:52,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:09:52,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:09:52,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-07 15:09:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:09:53,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730926994] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:09:53,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:09:53,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36 [2021-10-07 15:09:53,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599924941] [2021-10-07 15:09:53,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-07 15:09:53,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:09:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-07 15:09:53,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:09:53,582 INFO L87 Difference]: Start difference. First operand 31510 states and 134673 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) [2021-10-07 15:09:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:09:59,607 INFO L93 Difference]: Finished difference Result 38098 states and 156197 transitions. [2021-10-07 15:09:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:09:59,607 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 21 [2021-10-07 15:09:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:09:59,773 INFO L225 Difference]: With dead ends: 38098 [2021-10-07 15:09:59,773 INFO L226 Difference]: Without dead ends: 38072 [2021-10-07 15:09:59,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 5943.6ms TimeCoverageRelationStatistics Valid=507, Invalid=4749, Unknown=0, NotChecked=0, Total=5256 [2021-10-07 15:09:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38072 states. [2021-10-07 15:10:00,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38072 to 35834. [2021-10-07 15:10:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35834 states, 35832 states have (on average 4.194156061620897) internal successors, (150285), 35833 states have internal predecessors, (150285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:10:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35834 states to 35834 states and 150285 transitions. [2021-10-07 15:10:01,241 INFO L78 Accepts]: Start accepts. Automaton has 35834 states and 150285 transitions. Word has length 21 [2021-10-07 15:10:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:10:01,241 INFO L470 AbstractCegarLoop]: Abstraction has 35834 states and 150285 transitions. [2021-10-07 15:10:01,242 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) [2021-10-07 15:10:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 35834 states and 150285 transitions. [2021-10-07 15:10:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 15:10:01,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:10:01,243 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:10:01,299 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 [2021-10-07 15:10:01,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,102 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:01,448 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2021-10-07 15:10:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:10:01,450 INFO L82 PathProgramCache]: Analyzing trace with hash 457127317, now seen corresponding path program 48 times [2021-10-07 15:10:01,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:10:01,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931097149] [2021-10-07 15:10:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:10:01,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:10:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:10:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:10:03,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:10:03,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931097149] [2021-10-07 15:10:03,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931097149] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:10:03,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651066464] [2021-10-07 15:10:03,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:10:03,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:10:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:10:03,300 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) [2021-10-07 15:10:03,301 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 [2021-10-07 15:10:07,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 15:10:07,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:10:07,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-07 15:10:07,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:10:07,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-07 15:10:07,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-10-07 15:10:07,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 Received shutdown request... [2021-10-07 15:10:09,194 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,213 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 [2021-10-07 15:10:09,213 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:10:09,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-10-07 15:10:09,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-10-07 15:10:09,395 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. [2021-10-07 15:10:09,398 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,399 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,400 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:10:09,406 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:10:09,406 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:10:09,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:10:09 BasicIcfg [2021-10-07 15:10:09,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:10:09,408 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-07 15:10:09,409 INFO L168 Benchmark]: Toolchain (without parser) took 717149.87 ms. Allocated memory was 156.2 MB in the beginning and 3.8 GB in the end (delta: 3.6 GB). Free memory was 131.1 MB in the beginning and 2.2 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. [2021-10-07 15:10:09,409 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:10:09,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.88 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 120.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:10:09,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.74 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 118.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:10:09,410 INFO L168 Benchmark]: Boogie Preprocessor took 37.63 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:10:09,410 INFO L168 Benchmark]: RCFGBuilder took 746.06 ms. Allocated memory is still 156.2 MB. Free memory was 116.7 MB in the beginning and 135.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:10:09,410 INFO L168 Benchmark]: TraceAbstraction took 715998.01 ms. Allocated memory was 156.2 MB in the beginning and 3.8 GB in the end (delta: 3.6 GB). Free memory was 135.4 MB in the beginning and 2.2 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. [2021-10-07 15:10:09,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.88 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 120.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.74 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 118.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.63 ms. Allocated memory is still 156.2 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 746.06 ms. Allocated memory is still 156.2 MB. Free memory was 116.7 MB in the beginning and 135.9 MB in the end (delta: -19.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 715998.01 ms. Allocated memory was 156.2 MB in the beginning and 3.8 GB in the end (delta: 3.6 GB). Free memory was 135.4 MB in the beginning and 2.2 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8014.8ms, 161 PlacesBefore, 32 PlacesAfterwards, 168 TransitionsBefore, 28 TransitionsAfterwards, 3476 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 92 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 11 ConcurrentYvCompositions, 11 ChoiceCompositions, 201 TotalNumberOfCompositions, 4152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3854, positive: 3816, positive conditional: 0, positive unconditional: 3816, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2412, positive: 2395, positive conditional: 0, positive unconditional: 2395, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2412, positive: 2392, positive conditional: 0, positive unconditional: 2392, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3854, positive: 1421, positive conditional: 0, positive unconditional: 1421, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 2412, unknown conditional: 0, unknown unconditional: 2412] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - 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: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while BasicCegarLoop was analyzing trace of length 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 83]: 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 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - TimeoutResultAtElement [Line: 84]: 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 22 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 37 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 223 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 715701.4ms, OverallIterations: 106, TraceHistogramMax: 6, EmptinessCheckTime: 107.4ms, AutomataDifference: 271789.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8109.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1543 SDtfs, 8016 SDslu, 18904 SDs, 0 SdLazy, 76653 SolverSat, 6120 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 71844.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5111 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 4647 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54941 ImplicationChecksByTransitivity, 280375.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=35834occurred in iteration=105, InterpolantAutomatonStates: 3067, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9839.5ms AutomataMinimizationTime, 105 MinimizatonAttempts, 43822 StatesRemovedByMinimization, 96 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1156.8ms SsaConstructionTime, 11957.0ms SatisfiabilityAnalysisTime, 229615.9ms InterpolantComputationTime, 3499 NumberOfCodeBlocks, 3481 NumberOfCodeBlocksAsserted, 349 NumberOfCheckSat, 3293 ConstructedInterpolants, 134 QuantifiedInterpolants, 125455 SizeOfPredicates, 1875 NumberOfNonLiveVariables, 18089 ConjunctsInSsa, 3656 ConjunctsInUnsatCore, 206 InterpolantComputations, 9 PerfectInterpolantSequences, 444/4536 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