/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-two-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 19:44:38,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 19:44:38,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 19:44:38,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 19:44:38,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 19:44:38,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 19:44:38,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 19:44:38,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 19:44:38,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 19:44:38,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 19:44:38,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 19:44:38,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 19:44:38,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 19:44:38,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 19:44:38,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 19:44:38,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 19:44:38,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 19:44:38,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 19:44:38,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 19:44:38,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 19:44:38,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 19:44:38,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 19:44:38,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 19:44:38,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 19:44:38,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 19:44:38,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 19:44:38,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 19:44:38,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 19:44:38,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 19:44:38,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 19:44:38,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 19:44:38,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 19:44:38,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 19:44:38,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 19:44:38,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 19:44:38,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 19:44:38,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-13 19:44:38,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 19:44:38,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 19:44:38,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 19:44:38,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 19:44:38,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 19:44:38,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 19:44:38,494 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 19:44:38,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 19:44:38,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 19:44:38,495 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 19:44:38,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 19:44:38,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 19:44:38,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 19:44:38,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 19:44:38,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 19:44:38,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 19:44:38,497 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 19:44:38,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 19:44:38,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 19:44:38,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 19:44:38,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 19:44:38,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 19:44:38,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 19:44:38,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 19:44:38,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:44:38,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 19:44:38,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 19:44:38,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 19:44:38,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 19:44:38,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 19:44:38,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 19:44:38,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 19:44:38,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 19:44:38,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 19:44:38,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 19:44:38,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 19:44:38,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 19:44:38,941 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 19:44:38,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2021-10-13 19:44:39,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b6ddc8b4/26e5ef00c1344ad1a995048dc5e0d7c5/FLAGd13928d9c [2021-10-13 19:44:39,740 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 19:44:39,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2021-10-13 19:44:39,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b6ddc8b4/26e5ef00c1344ad1a995048dc5e0d7c5/FLAGd13928d9c [2021-10-13 19:44:40,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b6ddc8b4/26e5ef00c1344ad1a995048dc5e0d7c5 [2021-10-13 19:44:40,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 19:44:40,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 19:44:40,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 19:44:40,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 19:44:40,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 19:44:40,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333f169b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40, skipping insertion in model container [2021-10-13 19:44:40,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 19:44:40,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 19:44:40,372 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-two-queue.wvr.c[2987,3000] [2021-10-13 19:44:40,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:44:40,402 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 19:44:40,430 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-two-queue.wvr.c[2987,3000] [2021-10-13 19:44:40,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 19:44:40,454 INFO L208 MainTranslator]: Completed translation [2021-10-13 19:44:40,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40 WrapperNode [2021-10-13 19:44:40,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 19:44:40,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 19:44:40,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 19:44:40,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 19:44:40,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 19:44:40,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 19:44:40,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 19:44:40,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 19:44:40,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 19:44:40,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 19:44:40,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 19:44:40,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 19:44:40,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (1/1) ... [2021-10-13 19:44:40,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 19:44:40,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:40,597 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) [2021-10-13 19:44:40,620 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 [2021-10-13 19:44:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 19:44:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 19:44:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 19:44:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 19:44:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 19:44:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 19:44:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 19:44:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 19:44:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 19:44:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 19:44:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 19:44:40,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 19:44:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 19:44:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 19:44:40,665 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 19:44:41,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 19:44:41,635 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2021-10-13 19:44:41,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:41 BoogieIcfgContainer [2021-10-13 19:44:41,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 19:44:41,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 19:44:41,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 19:44:41,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 19:44:41,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:44:40" (1/3) ... [2021-10-13 19:44:41,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fd1718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:41, skipping insertion in model container [2021-10-13 19:44:41,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:40" (2/3) ... [2021-10-13 19:44:41,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fd1718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:41, skipping insertion in model container [2021-10-13 19:44:41,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:41" (3/3) ... [2021-10-13 19:44:41,647 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2021-10-13 19:44:41,653 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 19:44:41,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 19:44:41,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-13 19:44:41,654 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 19:44:41,692 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,693 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,693 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,694 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,694 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,695 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,695 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,696 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,696 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,696 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,697 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,697 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,698 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,698 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,699 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,699 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,699 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,700 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,700 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,701 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,701 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,702 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,702 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,702 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,702 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,702 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,703 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,703 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,703 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,703 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,704 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,704 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,704 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,704 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,704 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,705 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,706 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,707 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,707 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,708 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,708 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,709 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,709 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,709 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,710 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,712 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,713 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,713 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,713 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,714 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,714 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,715 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,715 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,716 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,716 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,716 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,716 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,717 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,722 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,723 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,726 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,727 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,727 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,728 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 19:44:41,734 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 19:44:41,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 19:44:41,800 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 [2021-10-13 19:44:41,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-10-13 19:44:41,820 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 19:44:41,832 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 183 transitions, 382 flow [2021-10-13 19:44:41,836 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 183 transitions, 382 flow [2021-10-13 19:44:41,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 177 places, 183 transitions, 382 flow [2021-10-13 19:44:41,956 INFO L129 PetriNetUnfolder]: 13/181 cut-off events. [2021-10-13 19:44:41,956 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 19:44:41,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 13/181 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2021-10-13 19:44:41,967 INFO L116 LiptonReduction]: Number of co-enabled transitions 1188 [2021-10-13 19:44:51,722 INFO L131 LiptonReduction]: Checked pairs total: 3168 [2021-10-13 19:44:51,723 INFO L133 LiptonReduction]: Total number of compositions: 204 [2021-10-13 19:44:51,736 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 90 flow [2021-10-13 19:44:51,791 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 202 states, 150 states have (on average 3.1866666666666665) internal successors, (478), 201 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:51,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 150 states have (on average 3.1866666666666665) internal successors, (478), 201 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 19:44:51,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:51,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 19:44:51,807 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash 27243, now seen corresponding path program 1 times [2021-10-13 19:44:51,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:51,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772201688] [2021-10-13 19:44:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:51,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:52,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:52,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772201688] [2021-10-13 19:44:52,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772201688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:52,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:52,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:44:52,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543611359] [2021-10-13 19:44:52,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:52,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:52,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:52,070 INFO L87 Difference]: Start difference. First operand has 202 states, 150 states have (on average 3.1866666666666665) internal successors, (478), 201 states have internal predecessors, (478), 0 states have call successors, (0), 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) [2021-10-13 19:44:52,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:52,169 INFO L93 Difference]: Finished difference Result 255 states and 599 transitions. [2021-10-13 19:44:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:52,172 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 [2021-10-13 19:44:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:52,196 INFO L225 Difference]: With dead ends: 255 [2021-10-13 19:44:52,196 INFO L226 Difference]: Without dead ends: 255 [2021-10-13 19:44:52,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-13 19:44:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 132. [2021-10-13 19:44:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 2.9423076923076925) internal successors, (306), 131 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 306 transitions. [2021-10-13 19:44:52,250 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 306 transitions. Word has length 2 [2021-10-13 19:44:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:52,251 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 306 transitions. [2021-10-13 19:44:52,251 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) [2021-10-13 19:44:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 306 transitions. [2021-10-13 19:44:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:44:52,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:52,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:44:52,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 19:44:52,253 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:52,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:52,253 INFO L82 PathProgramCache]: Analyzing trace with hash 845984, now seen corresponding path program 1 times [2021-10-13 19:44:52,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:52,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041150173] [2021-10-13 19:44:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:52,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:52,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:52,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041150173] [2021-10-13 19:44:52,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041150173] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:52,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519057597] [2021-10-13 19:44:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:52,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:52,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:52,344 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) [2021-10-13 19:44:52,346 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 [2021-10-13 19:44:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:52,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:44:52,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:52,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519057597] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:52,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:52,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-13 19:44:52,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264076975] [2021-10-13 19:44:52,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:44:52,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:44:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:52,465 INFO L87 Difference]: Start difference. First operand 132 states and 306 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) [2021-10-13 19:44:52,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:52,550 INFO L93 Difference]: Finished difference Result 380 states and 898 transitions. [2021-10-13 19:44:52,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:44:52,551 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 [2021-10-13 19:44:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:52,562 INFO L225 Difference]: With dead ends: 380 [2021-10-13 19:44:52,563 INFO L226 Difference]: Without dead ends: 380 [2021-10-13 19:44:52,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-13 19:44:52,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 134. [2021-10-13 19:44:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 106 states have (on average 2.943396226415094) internal successors, (312), 133 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 312 transitions. [2021-10-13 19:44:52,621 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 312 transitions. Word has length 3 [2021-10-13 19:44:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:52,622 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 312 transitions. [2021-10-13 19:44:52,622 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) [2021-10-13 19:44:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 312 transitions. [2021-10-13 19:44:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 19:44:52,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:52,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 19:44:52,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 19:44:52,833 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 [2021-10-13 19:44:52,834 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:52,834 INFO L82 PathProgramCache]: Analyzing trace with hash 845985, now seen corresponding path program 1 times [2021-10-13 19:44:52,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:52,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638635364] [2021-10-13 19:44:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:52,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:52,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:52,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638635364] [2021-10-13 19:44:52,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638635364] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:52,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950864789] [2021-10-13 19:44:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:52,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:52,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:52,962 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) [2021-10-13 19:44:52,987 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 [2021-10-13 19:44:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:53,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:44:53,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:53,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950864789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:53,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:53,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-13 19:44:53,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746021889] [2021-10-13 19:44:53,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:53,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:53,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:53,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:53,081 INFO L87 Difference]: Start difference. First operand 134 states and 312 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) [2021-10-13 19:44:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:53,139 INFO L93 Difference]: Finished difference Result 255 states and 601 transitions. [2021-10-13 19:44:53,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:53,140 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 [2021-10-13 19:44:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:53,142 INFO L225 Difference]: With dead ends: 255 [2021-10-13 19:44:53,143 INFO L226 Difference]: Without dead ends: 255 [2021-10-13 19:44:53,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-13 19:44:53,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 132. [2021-10-13 19:44:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 106 states have (on average 2.9056603773584904) internal successors, (308), 131 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 308 transitions. [2021-10-13 19:44:53,179 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 308 transitions. Word has length 3 [2021-10-13 19:44:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:53,182 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 308 transitions. [2021-10-13 19:44:53,182 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) [2021-10-13 19:44:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 308 transitions. [2021-10-13 19:44:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 19:44:53,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:53,183 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 19:44:53,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 19:44:53,384 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 [2021-10-13 19:44:53,385 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:53,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:53,387 INFO L82 PathProgramCache]: Analyzing trace with hash 26226955, now seen corresponding path program 2 times [2021-10-13 19:44:53,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:53,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910033] [2021-10-13 19:44:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:53,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:53,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:53,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910033] [2021-10-13 19:44:53,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:53,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375694002] [2021-10-13 19:44:53,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:53,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:53,442 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) [2021-10-13 19:44:53,453 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 [2021-10-13 19:44:53,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:44:53,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:53,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:44:53,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:44:53,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375694002] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:53,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:53,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:44:53,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585371205] [2021-10-13 19:44:53,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:53,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:53,528 INFO L87 Difference]: Start difference. First operand 132 states and 308 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) [2021-10-13 19:44:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:53,539 INFO L93 Difference]: Finished difference Result 131 states and 307 transitions. [2021-10-13 19:44:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:53,540 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 [2021-10-13 19:44:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:53,541 INFO L225 Difference]: With dead ends: 131 [2021-10-13 19:44:53,542 INFO L226 Difference]: Without dead ends: 131 [2021-10-13 19:44:53,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:53,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-13 19:44:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-10-13 19:44:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 2.9134615384615383) internal successors, (303), 128 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 303 transitions. [2021-10-13 19:44:53,577 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 303 transitions. Word has length 4 [2021-10-13 19:44:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:53,578 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 303 transitions. [2021-10-13 19:44:53,578 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) [2021-10-13 19:44:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 303 transitions. [2021-10-13 19:44:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:44:53,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:53,579 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 19:44:53,617 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 [2021-10-13 19:44:53,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:53,794 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash 813904095, now seen corresponding path program 1 times [2021-10-13 19:44:53,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:53,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666622] [2021-10-13 19:44:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:53,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:54,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:54,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:54,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666622] [2021-10-13 19:44:54,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666622] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:54,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:54,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 19:44:54,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126996001] [2021-10-13 19:44:54,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:54,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:44:54,063 INFO L87 Difference]: Start difference. First operand 129 states and 303 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-10-13 19:44:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:54,159 INFO L93 Difference]: Finished difference Result 154 states and 343 transitions. [2021-10-13 19:44:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 5 [2021-10-13 19:44:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:54,165 INFO L225 Difference]: With dead ends: 154 [2021-10-13 19:44:54,165 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 19:44:54,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 19:44:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2021-10-13 19:44:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 117 states have (on average 2.7777777777777777) internal successors, (325), 141 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 325 transitions. [2021-10-13 19:44:54,177 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 325 transitions. Word has length 5 [2021-10-13 19:44:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:54,177 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 325 transitions. [2021-10-13 19:44:54,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2021-10-13 19:44:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 325 transitions. [2021-10-13 19:44:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 19:44:54,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:54,179 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2021-10-13 19:44:54,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 19:44:54,179 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:54,180 INFO L82 PathProgramCache]: Analyzing trace with hash 813901983, now seen corresponding path program 1 times [2021-10-13 19:44:54,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:54,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235704950] [2021-10-13 19:44:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:54,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:54,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:54,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235704950] [2021-10-13 19:44:54,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235704950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:54,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490633696] [2021-10-13 19:44:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:54,294 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:54,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:54,299 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) [2021-10-13 19:44:54,326 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 [2021-10-13 19:44:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:54,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 19:44:54,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:54,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490633696] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:54,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:54,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-13 19:44:54,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233129553] [2021-10-13 19:44:54,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:44:54,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:54,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:44:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:54,409 INFO L87 Difference]: Start difference. First operand 142 states and 325 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2021-10-13 19:44:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:54,450 INFO L93 Difference]: Finished difference Result 396 states and 922 transitions. [2021-10-13 19:44:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:44:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 19:44:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:54,455 INFO L225 Difference]: With dead ends: 396 [2021-10-13 19:44:54,456 INFO L226 Difference]: Without dead ends: 396 [2021-10-13 19:44:54,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-13 19:44:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 143. [2021-10-13 19:44:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 118 states have (on average 2.7711864406779663) internal successors, (327), 142 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 327 transitions. [2021-10-13 19:44:54,467 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 327 transitions. Word has length 5 [2021-10-13 19:44:54,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:54,467 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 327 transitions. [2021-10-13 19:44:54,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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) [2021-10-13 19:44:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 327 transitions. [2021-10-13 19:44:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:44:54,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:54,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 19:44:54,508 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 [2021-10-13 19:44:54,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:54,683 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash -538838589, now seen corresponding path program 1 times [2021-10-13 19:44:54,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:54,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171515167] [2021-10-13 19:44:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:54,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:54,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:54,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171515167] [2021-10-13 19:44:54,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171515167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:54,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228481449] [2021-10-13 19:44:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:54,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:54,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:54,765 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) [2021-10-13 19:44:54,784 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 [2021-10-13 19:44:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:54,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:44:54,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:54,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228481449] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:54,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:54,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-13 19:44:54,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070455761] [2021-10-13 19:44:54,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:54,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:54,856 INFO L87 Difference]: Start difference. First operand 143 states and 327 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:54,867 INFO L93 Difference]: Finished difference Result 113 states and 254 transitions. [2021-10-13 19:44:54,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 19:44:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:54,869 INFO L225 Difference]: With dead ends: 113 [2021-10-13 19:44:54,869 INFO L226 Difference]: Without dead ends: 113 [2021-10-13 19:44:54,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-13 19:44:54,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-13 19:44:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 97 states have (on average 2.618556701030928) internal successors, (254), 112 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 254 transitions. [2021-10-13 19:44:54,874 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 254 transitions. Word has length 6 [2021-10-13 19:44:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:54,875 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 254 transitions. [2021-10-13 19:44:54,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 254 transitions. [2021-10-13 19:44:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 19:44:54,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:54,877 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2021-10-13 19:44:54,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 19:44:55,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:55,094 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash -538840701, now seen corresponding path program 2 times [2021-10-13 19:44:55,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:55,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097005019] [2021-10-13 19:44:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:55,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:55,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:55,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097005019] [2021-10-13 19:44:55,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097005019] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:55,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797400957] [2021-10-13 19:44:55,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:55,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:55,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:55,161 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) [2021-10-13 19:44:55,168 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 [2021-10-13 19:44:55,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:44:55,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:55,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 19:44:55,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:44:55,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797400957] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:55,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:55,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2021-10-13 19:44:55,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259551345] [2021-10-13 19:44:55,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:55,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:55,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:55,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 19:44:55,247 INFO L87 Difference]: Start difference. First operand 113 states and 254 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:55,274 INFO L93 Difference]: Finished difference Result 112 states and 253 transitions. [2021-10-13 19:44:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:55,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 19:44:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:55,276 INFO L225 Difference]: With dead ends: 112 [2021-10-13 19:44:55,276 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 19:44:55,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:44:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 19:44:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-10-13 19:44:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 95 states have (on average 2.6210526315789475) internal successors, (249), 109 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 249 transitions. [2021-10-13 19:44:55,281 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 249 transitions. Word has length 6 [2021-10-13 19:44:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:55,282 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 249 transitions. [2021-10-13 19:44:55,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 249 transitions. [2021-10-13 19:44:55,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 19:44:55,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:55,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:55,325 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 [2021-10-13 19:44:55,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:55,498 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:55,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:55,498 INFO L82 PathProgramCache]: Analyzing trace with hash 477899472, now seen corresponding path program 1 times [2021-10-13 19:44:55,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:55,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031319141] [2021-10-13 19:44:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:55,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:55,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:55,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:55,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031319141] [2021-10-13 19:44:55,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031319141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:55,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:55,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:44:55,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056239462] [2021-10-13 19:44:55,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:44:55,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:55,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:44:55,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:44:55,547 INFO L87 Difference]: Start difference. First operand 110 states and 249 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) [2021-10-13 19:44:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:55,591 INFO L93 Difference]: Finished difference Result 143 states and 296 transitions. [2021-10-13 19:44:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:44:55,592 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 [2021-10-13 19:44:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:55,593 INFO L225 Difference]: With dead ends: 143 [2021-10-13 19:44:55,593 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 19:44:55,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:44:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 19:44:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-13 19:44:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 96 states have (on average 2.6041666666666665) internal successors, (250), 110 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 250 transitions. [2021-10-13 19:44:55,599 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 250 transitions. Word has length 7 [2021-10-13 19:44:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:55,600 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 250 transitions. [2021-10-13 19:44:55,600 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) [2021-10-13 19:44:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 250 transitions. [2021-10-13 19:44:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:44:55,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:55,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:55,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 19:44:55,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1593883205, now seen corresponding path program 1 times [2021-10-13 19:44:55,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:55,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960280899] [2021-10-13 19:44:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:55,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:44:55,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:55,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960280899] [2021-10-13 19:44:55,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960280899] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:55,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717934673] [2021-10-13 19:44:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:55,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:55,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:55,649 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) [2021-10-13 19:44:55,676 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 [2021-10-13 19:44:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:55,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 19:44:55,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:55,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717934673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:55,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:55,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2021-10-13 19:44:55,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059080404] [2021-10-13 19:44:55,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:55,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:55,765 INFO L87 Difference]: Start difference. First operand 111 states and 250 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) [2021-10-13 19:44:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:55,774 INFO L93 Difference]: Finished difference Result 83 states and 178 transitions. [2021-10-13 19:44:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:55,774 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 [2021-10-13 19:44:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:55,775 INFO L225 Difference]: With dead ends: 83 [2021-10-13 19:44:55,775 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 19:44:55,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:44:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 19:44:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 19:44:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 2.5625) 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) [2021-10-13 19:44:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 164 transitions. [2021-10-13 19:44:55,779 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 164 transitions. Word has length 8 [2021-10-13 19:44:55,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:55,779 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 164 transitions. [2021-10-13 19:44:55,780 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) [2021-10-13 19:44:55,780 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 164 transitions. [2021-10-13 19:44:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 19:44:55,780 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:55,780 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:55,822 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 [2021-10-13 19:44:55,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-13 19:44:55,994 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:55,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:55,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1595906997, now seen corresponding path program 1 times [2021-10-13 19:44:55,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:55,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886936141] [2021-10-13 19:44:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:55,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:44:56,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:56,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886936141] [2021-10-13 19:44:56,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886936141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:56,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:56,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:44:56,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166528165] [2021-10-13 19:44:56,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:56,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:56,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:56,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:56,172 INFO L87 Difference]: Start difference. First operand 72 states and 164 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) [2021-10-13 19:44:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:56,185 INFO L93 Difference]: Finished difference Result 80 states and 179 transitions. [2021-10-13 19:44:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:56,185 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 [2021-10-13 19:44:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:56,186 INFO L225 Difference]: With dead ends: 80 [2021-10-13 19:44:56,186 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 19:44:56,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 19:44:56,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2021-10-13 19:44:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 2.5625) 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) [2021-10-13 19:44:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 164 transitions. [2021-10-13 19:44:56,191 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 164 transitions. Word has length 8 [2021-10-13 19:44:56,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:56,191 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 164 transitions. [2021-10-13 19:44:56,191 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) [2021-10-13 19:44:56,191 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 164 transitions. [2021-10-13 19:44:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 19:44:56,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:56,192 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:56,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 19:44:56,192 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:56,193 INFO L82 PathProgramCache]: Analyzing trace with hash -362470525, now seen corresponding path program 1 times [2021-10-13 19:44:56,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:56,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8216967] [2021-10-13 19:44:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:56,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:44:56,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:56,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8216967] [2021-10-13 19:44:56,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8216967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:56,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:44:56,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 19:44:56,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666488533] [2021-10-13 19:44:56,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 19:44:56,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 19:44:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:56,274 INFO L87 Difference]: Start difference. First operand 72 states and 164 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-13 19:44:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:56,290 INFO L93 Difference]: Finished difference Result 82 states and 179 transitions. [2021-10-13 19:44:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 19:44:56,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2021-10-13 19:44:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:56,292 INFO L225 Difference]: With dead ends: 82 [2021-10-13 19:44:56,292 INFO L226 Difference]: Without dead ends: 72 [2021-10-13 19:44:56,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 19:44:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-13 19:44:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-13 19:44:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 2.515625) internal successors, (161), 71 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 161 transitions. [2021-10-13 19:44:56,295 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 161 transitions. Word has length 10 [2021-10-13 19:44:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:56,296 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 161 transitions. [2021-10-13 19:44:56,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-13 19:44:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 161 transitions. [2021-10-13 19:44:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:44:56,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:56,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:56,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 19:44:56,297 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1651924365, now seen corresponding path program 1 times [2021-10-13 19:44:56,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:56,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901642418] [2021-10-13 19:44:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:56,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:56,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:56,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901642418] [2021-10-13 19:44:56,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901642418] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:56,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128187137] [2021-10-13 19:44:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:56,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:56,569 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) [2021-10-13 19:44:56,590 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 [2021-10-13 19:44:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:56,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:44:56,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:56,799 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 11 treesize of output 7 [2021-10-13 19:44:56,896 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 [2021-10-13 19:44:56,956 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 [2021-10-13 19:44:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:57,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128187137] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:57,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:57,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2021-10-13 19:44:57,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692678535] [2021-10-13 19:44:57,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:44:57,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:44:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:44:57,057 INFO L87 Difference]: Start difference. First operand 72 states and 161 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-10-13 19:44:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:57,452 INFO L93 Difference]: Finished difference Result 111 states and 268 transitions. [2021-10-13 19:44:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 19:44:57,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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 [2021-10-13 19:44:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:57,454 INFO L225 Difference]: With dead ends: 111 [2021-10-13 19:44:57,454 INFO L226 Difference]: Without dead ends: 111 [2021-10-13 19:44:57,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 390.2ms TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:44:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-13 19:44:57,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-10-13 19:44:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 2.4022988505747125) internal successors, (209), 94 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 209 transitions. [2021-10-13 19:44:57,460 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 209 transitions. Word has length 11 [2021-10-13 19:44:57,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:57,461 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 209 transitions. [2021-10-13 19:44:57,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-10-13 19:44:57,461 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 209 transitions. [2021-10-13 19:44:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:44:57,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:57,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:57,498 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 [2021-10-13 19:44:57,674 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,SelfDestructingSolverStorable12 [2021-10-13 19:44:57,674 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:57,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:57,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1651924319, now seen corresponding path program 1 times [2021-10-13 19:44:57,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:57,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688813861] [2021-10-13 19:44:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:57,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:57,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:57,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688813861] [2021-10-13 19:44:57,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688813861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:57,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036986405] [2021-10-13 19:44:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:57,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:57,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:57,934 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) [2021-10-13 19:44:57,956 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 [2021-10-13 19:44:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:58,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 19:44:58,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:58,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036986405] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:58,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:44:58,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 19:44:58,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683034373] [2021-10-13 19:44:58,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:44:58,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:44:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:44:58,245 INFO L87 Difference]: Start difference. First operand 95 states and 209 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2021-10-13 19:44:58,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:58,480 INFO L93 Difference]: Finished difference Result 158 states and 372 transitions. [2021-10-13 19:44:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 19:44:58,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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 [2021-10-13 19:44:58,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:58,482 INFO L225 Difference]: With dead ends: 158 [2021-10-13 19:44:58,483 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 19:44:58,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 200.4ms TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:44:58,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 19:44:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 132. [2021-10-13 19:44:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 124 states have (on average 2.2661290322580645) internal successors, (281), 131 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 281 transitions. [2021-10-13 19:44:58,489 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 281 transitions. Word has length 11 [2021-10-13 19:44:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:58,490 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 281 transitions. [2021-10-13 19:44:58,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2021-10-13 19:44:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 281 transitions. [2021-10-13 19:44:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:44:58,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:58,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:58,530 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 [2021-10-13 19:44:58,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:58,704 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:58,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1625112465, now seen corresponding path program 2 times [2021-10-13 19:44:58,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:58,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924087318] [2021-10-13 19:44:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:58,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:58,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:58,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924087318] [2021-10-13 19:44:58,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924087318] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:58,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720681956] [2021-10-13 19:44:58,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:44:58,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:58,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:58,988 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) [2021-10-13 19:44:58,990 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 [2021-10-13 19:44:59,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:44:59,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:44:59,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 19:44:59,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:44:59,275 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:44:59,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:44:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:44:59,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720681956] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:44:59,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:44:59,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2021-10-13 19:44:59,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442125193] [2021-10-13 19:44:59,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:44:59,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:44:59,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:44:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:44:59,298 INFO L87 Difference]: Start difference. First operand 132 states and 281 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:59,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:44:59,397 INFO L93 Difference]: Finished difference Result 146 states and 329 transitions. [2021-10-13 19:44:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:44:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 19:44:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:44:59,399 INFO L225 Difference]: With dead ends: 146 [2021-10-13 19:44:59,399 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 19:44:59,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:44:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 19:44:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-10-13 19:44:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 138 states have (on average 2.3840579710144927) internal successors, (329), 145 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 329 transitions. [2021-10-13 19:44:59,405 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 329 transitions. Word has length 11 [2021-10-13 19:44:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:44:59,406 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 329 transitions. [2021-10-13 19:44:59,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:44:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 329 transitions. [2021-10-13 19:44:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 19:44:59,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:44:59,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:44:59,441 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 [2021-10-13 19:44:59,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 19:44:59,619 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:44:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:44:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1625112492, now seen corresponding path program 1 times [2021-10-13 19:44:59,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:44:59,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094462453] [2021-10-13 19:44:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:59,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:44:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:44:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:44:59,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:44:59,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094462453] [2021-10-13 19:44:59,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094462453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:44:59,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461984031] [2021-10-13 19:44:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:44:59,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:44:59,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:44:59,878 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) [2021-10-13 19:44:59,900 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 [2021-10-13 19:44:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:00,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 19:45:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:00,092 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-10-13 19:45:00,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 21 treesize of output 47 [2021-10-13 19:45:00,680 INFO L354 Elim1Store]: treesize reduction 108, result has 36.1 percent of original size [2021-10-13 19:45:00,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 52 treesize of output 98 [2021-10-13 19:45:00,816 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 [2021-10-13 19:45:00,873 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 [2021-10-13 19:45:00,970 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:00,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 19:45:01,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:01,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461984031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:01,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:01,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 19:45:01,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856271815] [2021-10-13 19:45:01,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 19:45:01,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 19:45:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:45:01,013 INFO L87 Difference]: Start difference. First operand 146 states and 329 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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) [2021-10-13 19:45:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:01,569 INFO L93 Difference]: Finished difference Result 168 states and 373 transitions. [2021-10-13 19:45:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 19:45:01,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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 [2021-10-13 19:45:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:01,571 INFO L225 Difference]: With dead ends: 168 [2021-10-13 19:45:01,571 INFO L226 Difference]: Without dead ends: 168 [2021-10-13 19:45:01,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 544.2ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:45:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-10-13 19:45:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 148. [2021-10-13 19:45:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 140 states have (on average 2.3642857142857143) internal successors, (331), 147 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 331 transitions. [2021-10-13 19:45:01,578 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 331 transitions. Word has length 11 [2021-10-13 19:45:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:01,579 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 331 transitions. [2021-10-13 19:45:01,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 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) [2021-10-13 19:45:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 331 transitions. [2021-10-13 19:45:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:01,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:01,580 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:01,615 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 [2021-10-13 19:45:01,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:01,781 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:01,781 INFO L82 PathProgramCache]: Analyzing trace with hash -576604294, now seen corresponding path program 2 times [2021-10-13 19:45:01,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:01,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179150818] [2021-10-13 19:45:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:01,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:02,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:02,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179150818] [2021-10-13 19:45:02,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179150818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:02,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869246280] [2021-10-13 19:45:02,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:02,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:02,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:02,339 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) [2021-10-13 19:45:02,353 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 [2021-10-13 19:45:02,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:45:02,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:02,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 19:45:02,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:02,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869246280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:02,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:45:02,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2021-10-13 19:45:02,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346097220] [2021-10-13 19:45:02,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:02,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:45:02,585 INFO L87 Difference]: Start difference. First operand 148 states and 331 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:02,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:02,637 INFO L93 Difference]: Finished difference Result 188 states and 415 transitions. [2021-10-13 19:45:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:45:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:02,640 INFO L225 Difference]: With dead ends: 188 [2021-10-13 19:45:02,640 INFO L226 Difference]: Without dead ends: 188 [2021-10-13 19:45:02,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 192.3ms TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:45:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-13 19:45:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 138. [2021-10-13 19:45:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 130 states have (on average 2.3923076923076922) internal successors, (311), 137 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 311 transitions. [2021-10-13 19:45:02,647 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 311 transitions. Word has length 12 [2021-10-13 19:45:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:02,648 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 311 transitions. [2021-10-13 19:45:02,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 311 transitions. [2021-10-13 19:45:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:02,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:02,649 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:02,692 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 [2021-10-13 19:45:02,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 19:45:02,865 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:02,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash -603416194, now seen corresponding path program 3 times [2021-10-13 19:45:02,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:02,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765644965] [2021-10-13 19:45:02,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:02,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:03,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:03,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765644965] [2021-10-13 19:45:03,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765644965] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:03,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18009504] [2021-10-13 19:45:03,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:03,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:03,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:03,290 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) [2021-10-13 19:45:03,292 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 [2021-10-13 19:45:03,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 19:45:03,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:03,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:45:03,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:03,650 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:03,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:45:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:03,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18009504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:03,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:45:03,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-10-13 19:45:03,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793294361] [2021-10-13 19:45:03,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 19:45:03,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 19:45:03,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-10-13 19:45:03,679 INFO L87 Difference]: Start difference. First operand 138 states and 311 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:03,785 INFO L93 Difference]: Finished difference Result 138 states and 297 transitions. [2021-10-13 19:45:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:45:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:03,787 INFO L225 Difference]: With dead ends: 138 [2021-10-13 19:45:03,788 INFO L226 Difference]: Without dead ends: 138 [2021-10-13 19:45:03,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 244.2ms TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-10-13 19:45:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-13 19:45:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 110. [2021-10-13 19:45:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 2.3823529411764706) internal successors, (243), 109 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 243 transitions. [2021-10-13 19:45:03,793 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 243 transitions. Word has length 12 [2021-10-13 19:45:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:03,793 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 243 transitions. [2021-10-13 19:45:03,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 243 transitions. [2021-10-13 19:45:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:03,794 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:03,794 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:03,831 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 [2021-10-13 19:45:03,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 19:45:03,996 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1758202570, now seen corresponding path program 2 times [2021-10-13 19:45:03,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:03,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845038384] [2021-10-13 19:45:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:03,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:04,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:04,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845038384] [2021-10-13 19:45:04,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845038384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:04,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664122647] [2021-10-13 19:45:04,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:04,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:04,647 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) [2021-10-13 19:45:04,648 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 [2021-10-13 19:45:04,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 19:45:04,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:04,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 19:45:04,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:04,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664122647] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:04,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 19:45:04,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2021-10-13 19:45:04,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116133632] [2021-10-13 19:45:04,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:45:04,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:45:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:45:04,905 INFO L87 Difference]: Start difference. First operand 110 states and 243 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:04,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:04,949 INFO L93 Difference]: Finished difference Result 122 states and 285 transitions. [2021-10-13 19:45:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-13 19:45:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:04,951 INFO L225 Difference]: With dead ends: 122 [2021-10-13 19:45:04,951 INFO L226 Difference]: Without dead ends: 122 [2021-10-13 19:45:04,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 279.0ms TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:45:04,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-13 19:45:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-13 19:45:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 114 states have (on average 2.5) internal successors, (285), 121 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 285 transitions. [2021-10-13 19:45:04,956 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 285 transitions. Word has length 12 [2021-10-13 19:45:04,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:04,957 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 285 transitions. [2021-10-13 19:45:04,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 285 transitions. [2021-10-13 19:45:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 19:45:04,958 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:04,958 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:05,000 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 [2021-10-13 19:45:05,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:05,172 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1758202571, now seen corresponding path program 1 times [2021-10-13 19:45:05,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:05,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342535663] [2021-10-13 19:45:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:05,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:05,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:05,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342535663] [2021-10-13 19:45:05,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342535663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:05,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003781312] [2021-10-13 19:45:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:05,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:05,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:05,680 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) [2021-10-13 19:45:05,704 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 [2021-10-13 19:45:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:05,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 19:45:05,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 19:45:05,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003781312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:05,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:05,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 8 [2021-10-13 19:45:05,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642596373] [2021-10-13 19:45:05,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 19:45:05,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 19:45:05,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 19:45:05,961 INFO L87 Difference]: Start difference. First operand 122 states and 285 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2021-10-13 19:45:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:06,533 INFO L93 Difference]: Finished difference Result 158 states and 343 transitions. [2021-10-13 19:45:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:45:06,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 [2021-10-13 19:45:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:06,536 INFO L225 Difference]: With dead ends: 158 [2021-10-13 19:45:06,536 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 19:45:06,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 567.6ms TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:45:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 19:45:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 96. [2021-10-13 19:45:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 88 states have (on average 2.5) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:06,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 220 transitions. [2021-10-13 19:45:06,542 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 220 transitions. Word has length 12 [2021-10-13 19:45:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:06,542 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 220 transitions. [2021-10-13 19:45:06,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2021-10-13 19:45:06,542 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 220 transitions. [2021-10-13 19:45:06,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:45:06,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:06,543 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:06,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:06,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:06,755 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:06,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1638540863, now seen corresponding path program 1 times [2021-10-13 19:45:06,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:06,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068761438] [2021-10-13 19:45:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:06,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:06,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:06,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068761438] [2021-10-13 19:45:06,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068761438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:06,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532892679] [2021-10-13 19:45:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:06,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:06,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:06,837 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) [2021-10-13 19:45:06,852 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 [2021-10-13 19:45:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:07,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:07,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:07,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532892679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:07,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:07,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-13 19:45:07,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489765703] [2021-10-13 19:45:07,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 19:45:07,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 19:45:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:45:07,103 INFO L87 Difference]: Start difference. First operand 96 states and 220 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:07,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:07,165 INFO L93 Difference]: Finished difference Result 152 states and 333 transitions. [2021-10-13 19:45:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:07,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:45:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:07,167 INFO L225 Difference]: With dead ends: 152 [2021-10-13 19:45:07,167 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 19:45:07,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:45:07,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 19:45:07,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 128. [2021-10-13 19:45:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 120 states have (on average 2.4166666666666665) internal successors, (290), 127 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 290 transitions. [2021-10-13 19:45:07,173 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 290 transitions. Word has length 13 [2021-10-13 19:45:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:07,173 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 290 transitions. [2021-10-13 19:45:07,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 290 transitions. [2021-10-13 19:45:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 19:45:07,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:07,174 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:07,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-10-13 19:45:07,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-13 19:45:07,390 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:07,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:07,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1638521752, now seen corresponding path program 1 times [2021-10-13 19:45:07,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:07,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264498116] [2021-10-13 19:45:07,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:07,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:07,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:07,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264498116] [2021-10-13 19:45:07,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264498116] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:07,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541879713] [2021-10-13 19:45:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:07,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:07,464 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) [2021-10-13 19:45:07,488 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 [2021-10-13 19:45:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:07,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 19:45:07,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:07,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541879713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:07,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:07,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-13 19:45:07,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122524416] [2021-10-13 19:45:07,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 19:45:07,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 19:45:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-13 19:45:07,740 INFO L87 Difference]: Start difference. First operand 128 states and 290 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:07,806 INFO L93 Difference]: Finished difference Result 200 states and 428 transitions. [2021-10-13 19:45:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 19:45:07,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 19:45:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:07,808 INFO L225 Difference]: With dead ends: 200 [2021-10-13 19:45:07,808 INFO L226 Difference]: Without dead ends: 173 [2021-10-13 19:45:07,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 19:45:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-13 19:45:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2021-10-13 19:45:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 155 states have (on average 2.3483870967741933) internal successors, (364), 162 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 364 transitions. [2021-10-13 19:45:07,814 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 364 transitions. Word has length 13 [2021-10-13 19:45:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:07,815 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 364 transitions. [2021-10-13 19:45:07,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 364 transitions. [2021-10-13 19:45:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:45:07,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:07,816 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:07,853 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 [2021-10-13 19:45:08,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:08,030 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:08,032 INFO L82 PathProgramCache]: Analyzing trace with hash -65927405, now seen corresponding path program 2 times [2021-10-13 19:45:08,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:08,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082265656] [2021-10-13 19:45:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:08,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 19:45:08,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:08,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082265656] [2021-10-13 19:45:08,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082265656] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:08,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:08,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:08,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118572218] [2021-10-13 19:45:08,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:08,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:08,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:08,117 INFO L87 Difference]: Start difference. First operand 163 states and 364 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:08,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:08,138 INFO L93 Difference]: Finished difference Result 279 states and 610 transitions. [2021-10-13 19:45:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:08,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:45:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:08,141 INFO L225 Difference]: With dead ends: 279 [2021-10-13 19:45:08,141 INFO L226 Difference]: Without dead ends: 247 [2021-10-13 19:45:08,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-10-13 19:45:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 163. [2021-10-13 19:45:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 153 states have (on average 2.6143790849673203) internal successors, (400), 162 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:08,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 400 transitions. [2021-10-13 19:45:08,149 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 400 transitions. Word has length 14 [2021-10-13 19:45:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:08,149 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 400 transitions. [2021-10-13 19:45:08,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:08,149 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 400 transitions. [2021-10-13 19:45:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 19:45:08,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:08,151 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:08,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 19:45:08,151 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:08,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:08,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1710629651, now seen corresponding path program 2 times [2021-10-13 19:45:08,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:08,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847852943] [2021-10-13 19:45:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:08,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:08,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:08,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847852943] [2021-10-13 19:45:08,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847852943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 19:45:08,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 19:45:08,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 19:45:08,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259535491] [2021-10-13 19:45:08,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 19:45:08,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 19:45:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:08,226 INFO L87 Difference]: Start difference. First operand 163 states and 400 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:08,250 INFO L93 Difference]: Finished difference Result 285 states and 671 transitions. [2021-10-13 19:45:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 19:45:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 19:45:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:08,254 INFO L225 Difference]: With dead ends: 285 [2021-10-13 19:45:08,254 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 19:45:08,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 19:45:08,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 19:45:08,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 172. [2021-10-13 19:45:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 160 states have (on average 2.95) internal successors, (472), 171 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 472 transitions. [2021-10-13 19:45:08,263 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 472 transitions. Word has length 14 [2021-10-13 19:45:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:08,263 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 472 transitions. [2021-10-13 19:45:08,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 472 transitions. [2021-10-13 19:45:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:08,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:08,266 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:08,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-13 19:45:08,266 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:08,267 INFO L82 PathProgramCache]: Analyzing trace with hash -747426159, now seen corresponding path program 1 times [2021-10-13 19:45:08,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:08,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773334658] [2021-10-13 19:45:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:08,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:08,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:08,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773334658] [2021-10-13 19:45:08,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773334658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:08,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154222861] [2021-10-13 19:45:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:08,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:08,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:08,580 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) [2021-10-13 19:45:08,581 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 [2021-10-13 19:45:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:08,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:45:08,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:08,969 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 [2021-10-13 19:45:09,029 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 [2021-10-13 19:45:09,083 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 [2021-10-13 19:45:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:09,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154222861] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:09,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:09,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2021-10-13 19:45:09,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114629686] [2021-10-13 19:45:09,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:45:09,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:45:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:45:09,289 INFO L87 Difference]: Start difference. First operand 172 states and 472 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-13 19:45:09,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:09,987 INFO L93 Difference]: Finished difference Result 450 states and 1105 transitions. [2021-10-13 19:45:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:45:09,987 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 17 [2021-10-13 19:45:09,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:09,991 INFO L225 Difference]: With dead ends: 450 [2021-10-13 19:45:09,991 INFO L226 Difference]: Without dead ends: 450 [2021-10-13 19:45:09,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 576.7ms TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:45:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-13 19:45:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 280. [2021-10-13 19:45:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 268 states have (on average 3.111940298507463) internal successors, (834), 279 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 834 transitions. [2021-10-13 19:45:10,004 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 834 transitions. Word has length 17 [2021-10-13 19:45:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:10,005 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 834 transitions. [2021-10-13 19:45:10,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-13 19:45:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 834 transitions. [2021-10-13 19:45:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:10,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:10,006 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:10,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:10,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:10,220 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash -747426205, now seen corresponding path program 1 times [2021-10-13 19:45:10,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:10,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003995619] [2021-10-13 19:45:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:10,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:10,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:10,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003995619] [2021-10-13 19:45:10,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003995619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:10,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931096394] [2021-10-13 19:45:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:10,549 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:10,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:10,550 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) [2021-10-13 19:45:10,552 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 [2021-10-13 19:45:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:10,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 19:45:10,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:10,918 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 [2021-10-13 19:45:10,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:10,999 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-13 19:45:11,080 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:45:11,081 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 [2021-10-13 19:45:11,168 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:45:11,169 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 [2021-10-13 19:45:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:11,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931096394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:11,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:11,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 20 [2021-10-13 19:45:11,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234440575] [2021-10-13 19:45:11,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:45:11,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:11,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:45:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:45:11,584 INFO L87 Difference]: Start difference. First operand 280 states and 834 transitions. Second operand has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 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) [2021-10-13 19:45:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:16,432 INFO L93 Difference]: Finished difference Result 657 states and 1723 transitions. [2021-10-13 19:45:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-13 19:45:16,433 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 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 [2021-10-13 19:45:16,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:16,438 INFO L225 Difference]: With dead ends: 657 [2021-10-13 19:45:16,439 INFO L226 Difference]: Without dead ends: 657 [2021-10-13 19:45:16,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 2340.3ms TimeCoverageRelationStatistics Valid=248, Invalid=2202, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:45:16,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-10-13 19:45:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 467. [2021-10-13 19:45:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 455 states have (on average 3.0263736263736263) internal successors, (1377), 466 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1377 transitions. [2021-10-13 19:45:16,460 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1377 transitions. Word has length 17 [2021-10-13 19:45:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:16,460 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 1377 transitions. [2021-10-13 19:45:16,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 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) [2021-10-13 19:45:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1377 transitions. [2021-10-13 19:45:16,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:16,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:16,462 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:16,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 19:45:16,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 19:45:16,667 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash -747426204, now seen corresponding path program 1 times [2021-10-13 19:45:16,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:16,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041284674] [2021-10-13 19:45:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:16,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:16,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:16,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041284674] [2021-10-13 19:45:16,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041284674] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:16,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254059564] [2021-10-13 19:45:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:16,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:16,973 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) [2021-10-13 19:45:16,974 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 [2021-10-13 19:45:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:17,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 19:45:17,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:45:17,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254059564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:17,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:17,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-13 19:45:17,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127489461] [2021-10-13 19:45:17,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 19:45:17,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:17,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 19:45:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 19:45:17,379 INFO L87 Difference]: Start difference. First operand 467 states and 1377 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-10-13 19:45:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:17,931 INFO L93 Difference]: Finished difference Result 755 states and 1941 transitions. [2021-10-13 19:45:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:45:17,932 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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 17 [2021-10-13 19:45:17,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:17,938 INFO L225 Difference]: With dead ends: 755 [2021-10-13 19:45:17,938 INFO L226 Difference]: Without dead ends: 743 [2021-10-13 19:45:17,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 430.0ms TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:45:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-10-13 19:45:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 559. [2021-10-13 19:45:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 547 states have (on average 2.9085923217550276) internal successors, (1591), 558 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1591 transitions. [2021-10-13 19:45:17,961 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 1591 transitions. Word has length 17 [2021-10-13 19:45:17,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:17,962 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 1591 transitions. [2021-10-13 19:45:17,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-10-13 19:45:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 1591 transitions. [2021-10-13 19:45:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:17,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:17,963 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:18,004 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 [2021-10-13 19:45:18,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 19:45:18,176 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:18,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:18,177 INFO L82 PathProgramCache]: Analyzing trace with hash -747426132, now seen corresponding path program 1 times [2021-10-13 19:45:18,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:18,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004012662] [2021-10-13 19:45:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:18,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:18,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004012662] [2021-10-13 19:45:18,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004012662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:18,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421053314] [2021-10-13 19:45:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:18,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:18,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:18,449 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) [2021-10-13 19:45:18,451 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 [2021-10-13 19:45:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:18,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 19:45:18,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:18,875 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 [2021-10-13 19:45:18,974 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:18,974 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 [2021-10-13 19:45:19,063 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:19,063 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 [2021-10-13 19:45:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:19,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421053314] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:19,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:19,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-13 19:45:19,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039471881] [2021-10-13 19:45:19,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 19:45:19,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 19:45:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-13 19:45:19,366 INFO L87 Difference]: Start difference. First operand 559 states and 1591 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-13 19:45:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:20,077 INFO L93 Difference]: Finished difference Result 605 states and 1692 transitions. [2021-10-13 19:45:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:45:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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 17 [2021-10-13 19:45:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:20,083 INFO L225 Difference]: With dead ends: 605 [2021-10-13 19:45:20,083 INFO L226 Difference]: Without dead ends: 605 [2021-10-13 19:45:20,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 712.8ms TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2021-10-13 19:45:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-10-13 19:45:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 593. [2021-10-13 19:45:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 581 states have (on average 2.8674698795180724) internal successors, (1666), 592 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1666 transitions. [2021-10-13 19:45:20,107 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1666 transitions. Word has length 17 [2021-10-13 19:45:20,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:20,107 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 1666 transitions. [2021-10-13 19:45:20,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 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) [2021-10-13 19:45:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1666 transitions. [2021-10-13 19:45:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:20,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:20,108 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:20,146 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 [2021-10-13 19:45:20,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 19:45:20,322 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:20,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:20,322 INFO L82 PathProgramCache]: Analyzing trace with hash -745873989, now seen corresponding path program 2 times [2021-10-13 19:45:20,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:20,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415120267] [2021-10-13 19:45:20,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:20,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:20,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:20,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415120267] [2021-10-13 19:45:20,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415120267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:20,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713441896] [2021-10-13 19:45:20,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:20,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:20,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:20,687 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) [2021-10-13 19:45:20,703 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 [2021-10-13 19:45:20,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:20,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:20,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-13 19:45:20,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:21,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713441896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:21,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:21,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-13 19:45:21,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543827742] [2021-10-13 19:45:21,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 19:45:21,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 19:45:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-10-13 19:45:21,366 INFO L87 Difference]: Start difference. First operand 593 states and 1666 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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) [2021-10-13 19:45:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:22,204 INFO L93 Difference]: Finished difference Result 647 states and 1568 transitions. [2021-10-13 19:45:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:45:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 17 [2021-10-13 19:45:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:22,209 INFO L225 Difference]: With dead ends: 647 [2021-10-13 19:45:22,209 INFO L226 Difference]: Without dead ends: 603 [2021-10-13 19:45:22,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 769.8ms TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:45:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-10-13 19:45:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 462. [2021-10-13 19:45:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 450 states have (on average 2.6622222222222223) internal successors, (1198), 461 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1198 transitions. [2021-10-13 19:45:22,227 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1198 transitions. Word has length 17 [2021-10-13 19:45:22,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:22,227 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 1198 transitions. [2021-10-13 19:45:22,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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) [2021-10-13 19:45:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1198 transitions. [2021-10-13 19:45:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:22,228 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:22,229 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:22,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-13 19:45:22,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 19:45:22,443 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:22,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:22,444 INFO L82 PathProgramCache]: Analyzing trace with hash -745873962, now seen corresponding path program 2 times [2021-10-13 19:45:22,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:22,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611172957] [2021-10-13 19:45:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:22,445 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:23,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:23,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611172957] [2021-10-13 19:45:23,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611172957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:23,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045432157] [2021-10-13 19:45:23,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:23,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:23,724 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) [2021-10-13 19:45:23,739 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 [2021-10-13 19:45:24,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:24,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:24,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 19:45:24,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:24,127 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-10-13 19:45:24,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 69 treesize of output 92 [2021-10-13 19:45:26,218 INFO L354 Elim1Store]: treesize reduction 108, result has 36.1 percent of original size [2021-10-13 19:45:26,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 114 [2021-10-13 19:45:26,421 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 [2021-10-13 19:45:26,524 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:26,525 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 [2021-10-13 19:45:26,621 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:45:26,622 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 [2021-10-13 19:45:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:26,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045432157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:26,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:26,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 23 [2021-10-13 19:45:26,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343328855] [2021-10-13 19:45:26,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:45:26,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:45:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:45:26,981 INFO L87 Difference]: Start difference. First operand 462 states and 1198 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) [2021-10-13 19:45:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:30,412 INFO L93 Difference]: Finished difference Result 653 states and 1579 transitions. [2021-10-13 19:45:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:45:30,413 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 [2021-10-13 19:45:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:30,417 INFO L225 Difference]: With dead ends: 653 [2021-10-13 19:45:30,417 INFO L226 Difference]: Without dead ends: 623 [2021-10-13 19:45:30,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 3318.3ms TimeCoverageRelationStatistics Valid=257, Invalid=2193, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 19:45:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-10-13 19:45:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 569. [2021-10-13 19:45:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 557 states have (on average 2.563734290843806) internal successors, (1428), 568 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1428 transitions. [2021-10-13 19:45:30,437 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1428 transitions. Word has length 17 [2021-10-13 19:45:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:30,437 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 1428 transitions. [2021-10-13 19:45:30,437 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) [2021-10-13 19:45:30,438 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1428 transitions. [2021-10-13 19:45:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:30,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:30,439 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:30,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-13 19:45:30,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:30,655 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:30,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:30,656 INFO L82 PathProgramCache]: Analyzing trace with hash -729123805, now seen corresponding path program 2 times [2021-10-13 19:45:30,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:30,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045873278] [2021-10-13 19:45:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:30,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:31,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:31,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045873278] [2021-10-13 19:45:31,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045873278] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:31,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555706743] [2021-10-13 19:45:31,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:31,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:31,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:31,067 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) [2021-10-13 19:45:31,074 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 [2021-10-13 19:45:31,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:31,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:31,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 19:45:31,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:31,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:31,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:31,520 INFO L354 Elim1Store]: treesize reduction 228, result has 15.6 percent of original size [2021-10-13 19:45:31,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 61 treesize of output 84 [2021-10-13 19:45:32,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-10-13 19:45:32,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:32,780 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-13 19:45:32,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 106 [2021-10-13 19:45:32,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2021-10-13 19:45:32,988 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-10-13 19:45:32,988 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 [2021-10-13 19:45:33,055 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:45:33,056 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 [2021-10-13 19:45:33,133 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 19:45:33,133 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 [2021-10-13 19:45:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:33,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555706743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:33,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:33,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-13 19:45:33,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387015458] [2021-10-13 19:45:33,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:45:33,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:45:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:45:33,353 INFO L87 Difference]: Start difference. First operand 569 states and 1428 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-13 19:45:34,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:34,296 INFO L93 Difference]: Finished difference Result 653 states and 1544 transitions. [2021-10-13 19:45:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 19:45:34,297 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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 [2021-10-13 19:45:34,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:34,300 INFO L225 Difference]: With dead ends: 653 [2021-10-13 19:45:34,300 INFO L226 Difference]: Without dead ends: 579 [2021-10-13 19:45:34,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1013.6ms TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:45:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-10-13 19:45:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 487. [2021-10-13 19:45:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 475 states have (on average 2.5431578947368423) internal successors, (1208), 486 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1208 transitions. [2021-10-13 19:45:34,316 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1208 transitions. Word has length 17 [2021-10-13 19:45:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:34,317 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 1208 transitions. [2021-10-13 19:45:34,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-13 19:45:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1208 transitions. [2021-10-13 19:45:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:34,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:34,318 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:34,357 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 [2021-10-13 19:45:34,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 19:45:34,531 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:34,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:34,532 INFO L82 PathProgramCache]: Analyzing trace with hash -729123804, now seen corresponding path program 2 times [2021-10-13 19:45:34,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:34,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025035734] [2021-10-13 19:45:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:34,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:34,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:34,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025035734] [2021-10-13 19:45:34,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025035734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:34,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762845130] [2021-10-13 19:45:34,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:45:34,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:34,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:34,753 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) [2021-10-13 19:45:34,773 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 [2021-10-13 19:45:35,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:45:35,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:35,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:45:35,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:35,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:35,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:35,230 INFO L354 Elim1Store]: treesize reduction 228, result has 15.6 percent of original size [2021-10-13 19:45:35,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 272 treesize of output 281 [2021-10-13 19:45:36,367 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 [2021-10-13 19:45:36,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:36,542 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-13 19:45:36,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 60 treesize of output 106 [2021-10-13 19:45:36,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 19:45:36,719 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 28 treesize of output 24 [2021-10-13 19:45:36,770 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 17 treesize of output 13 [2021-10-13 19:45:36,824 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 [2021-10-13 19:45:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:37,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762845130] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:37,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:37,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 17 [2021-10-13 19:45:37,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011842202] [2021-10-13 19:45:37,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:45:37,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:37,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:45:37,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:45:37,042 INFO L87 Difference]: Start difference. First operand 487 states and 1208 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 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) [2021-10-13 19:45:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:37,926 INFO L93 Difference]: Finished difference Result 539 states and 1258 transitions. [2021-10-13 19:45:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 19:45:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 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 [2021-10-13 19:45:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:37,930 INFO L225 Difference]: With dead ends: 539 [2021-10-13 19:45:37,930 INFO L226 Difference]: Without dead ends: 507 [2021-10-13 19:45:37,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 840.4ms TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:45:37,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-10-13 19:45:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 443. [2021-10-13 19:45:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 431 states have (on average 2.5406032482598606) internal successors, (1095), 442 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1095 transitions. [2021-10-13 19:45:37,945 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1095 transitions. Word has length 17 [2021-10-13 19:45:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:37,946 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1095 transitions. [2021-10-13 19:45:37,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 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) [2021-10-13 19:45:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1095 transitions. [2021-10-13 19:45:37,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 19:45:37,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:37,947 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:37,978 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 [2021-10-13 19:45:38,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:38,161 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1612112422, now seen corresponding path program 3 times [2021-10-13 19:45:38,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:38,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020687308] [2021-10-13 19:45:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:38,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:45:38,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:38,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020687308] [2021-10-13 19:45:38,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020687308] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:38,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144690028] [2021-10-13 19:45:38,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:38,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:38,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:38,453 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) [2021-10-13 19:45:38,468 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 [2021-10-13 19:45:38,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:45:38,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-13 19:45:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:38,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-13 19:45:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:45:38,960 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 0 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:45:39,052 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-13 19:45:39,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 37 [2021-10-13 19:45:39,186 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-13 19:45:39,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-10-13 19:45:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:39,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144690028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:39,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:39,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 17 [2021-10-13 19:45:39,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482936864] [2021-10-13 19:45:39,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:45:39,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:45:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:45:39,405 INFO L87 Difference]: Start difference. First operand 443 states and 1095 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) 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) [2021-10-13 19:45:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:41,122 INFO L93 Difference]: Finished difference Result 467 states and 1069 transitions. [2021-10-13 19:45:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 19:45:41,123 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) 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 17 [2021-10-13 19:45:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:41,125 INFO L225 Difference]: With dead ends: 467 [2021-10-13 19:45:41,125 INFO L226 Difference]: Without dead ends: 393 [2021-10-13 19:45:41,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1475.2ms TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:45:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-10-13 19:45:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2021-10-13 19:45:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 311 states have (on average 2.581993569131833) internal successors, (803), 322 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 803 transitions. [2021-10-13 19:45:41,136 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 803 transitions. Word has length 17 [2021-10-13 19:45:41,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:41,137 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 803 transitions. [2021-10-13 19:45:41,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) 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) [2021-10-13 19:45:41,137 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 803 transitions. [2021-10-13 19:45:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:41,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:41,138 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:41,174 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 [2021-10-13 19:45:41,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:41,354 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:41,354 INFO L82 PathProgramCache]: Analyzing trace with hash 837213109, now seen corresponding path program 3 times [2021-10-13 19:45:41,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:41,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268637540] [2021-10-13 19:45:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:41,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:43,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:43,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268637540] [2021-10-13 19:45:43,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268637540] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:43,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456356016] [2021-10-13 19:45:43,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:43,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:43,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:43,191 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) [2021-10-13 19:45:43,215 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 [2021-10-13 19:45:43,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 19:45:43,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:43,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 19:45:43,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 19:45:43,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456356016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:43,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:43,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 4] total 19 [2021-10-13 19:45:43,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163855141] [2021-10-13 19:45:43,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:45:43,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:45:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:45:43,883 INFO L87 Difference]: Start difference. First operand 323 states and 803 transitions. Second operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 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) [2021-10-13 19:45:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:46,354 INFO L93 Difference]: Finished difference Result 565 states and 1268 transitions. [2021-10-13 19:45:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:45:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 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 18 [2021-10-13 19:45:46,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:46,359 INFO L225 Difference]: With dead ends: 565 [2021-10-13 19:45:46,359 INFO L226 Difference]: Without dead ends: 551 [2021-10-13 19:45:46,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2265.7ms TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:45:46,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-10-13 19:45:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 388. [2021-10-13 19:45:46,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 376 states have (on average 2.5930851063829787) internal successors, (975), 387 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 975 transitions. [2021-10-13 19:45:46,395 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 975 transitions. Word has length 18 [2021-10-13 19:45:46,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:46,399 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 975 transitions. [2021-10-13 19:45:46,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 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) [2021-10-13 19:45:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 975 transitions. [2021-10-13 19:45:46,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:46,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:46,400 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:46,445 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 [2021-10-13 19:45:46,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 19:45:46,613 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash 838765306, now seen corresponding path program 4 times [2021-10-13 19:45:46,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:46,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903425310] [2021-10-13 19:45:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:46,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:47,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:47,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903425310] [2021-10-13 19:45:47,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903425310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:47,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446834143] [2021-10-13 19:45:47,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:45:47,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:47,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:47,619 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) [2021-10-13 19:45:47,621 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 [2021-10-13 19:45:48,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:45:48,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:48,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:45:48,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:48,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446834143] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:48,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:48,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2021-10-13 19:45:48,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916633948] [2021-10-13 19:45:48,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:45:48,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:45:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:45:48,375 INFO L87 Difference]: Start difference. First operand 388 states and 975 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:50,021 INFO L93 Difference]: Finished difference Result 525 states and 1167 transitions. [2021-10-13 19:45:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 19:45:50,021 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:45:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:50,024 INFO L225 Difference]: With dead ends: 525 [2021-10-13 19:45:50,024 INFO L226 Difference]: Without dead ends: 438 [2021-10-13 19:45:50,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1586.5ms TimeCoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:45:50,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-13 19:45:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 357. [2021-10-13 19:45:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 345 states have (on average 2.5304347826086957) internal successors, (873), 356 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 873 transitions. [2021-10-13 19:45:50,036 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 873 transitions. Word has length 18 [2021-10-13 19:45:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:50,036 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 873 transitions. [2021-10-13 19:45:50,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 873 transitions. [2021-10-13 19:45:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:50,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:50,037 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:50,075 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 [2021-10-13 19:45:50,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-13 19:45:50,253 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:50,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:50,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1298658432, now seen corresponding path program 5 times [2021-10-13 19:45:50,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:50,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752024274] [2021-10-13 19:45:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:50,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:51,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:51,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752024274] [2021-10-13 19:45:51,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752024274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:51,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709241991] [2021-10-13 19:45:51,134 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:45:51,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:51,136 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) [2021-10-13 19:45:51,149 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 [2021-10-13 19:45:51,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:45:51,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:51,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 19:45:51,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:45:51,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709241991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:51,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:51,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6] total 20 [2021-10-13 19:45:51,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822744481] [2021-10-13 19:45:51,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:45:51,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:51,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:45:51,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:45:51,835 INFO L87 Difference]: Start difference. First operand 357 states and 873 transitions. Second operand has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-13 19:45:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:53,381 INFO L93 Difference]: Finished difference Result 401 states and 908 transitions. [2021-10-13 19:45:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:45:53,382 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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 [2021-10-13 19:45:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:53,385 INFO L225 Difference]: With dead ends: 401 [2021-10-13 19:45:53,385 INFO L226 Difference]: Without dead ends: 344 [2021-10-13 19:45:53,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1330.2ms TimeCoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 19:45:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-13 19:45:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 302. [2021-10-13 19:45:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 290 states have (on average 2.6206896551724137) internal successors, (760), 301 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 760 transitions. [2021-10-13 19:45:53,393 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 760 transitions. Word has length 18 [2021-10-13 19:45:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:53,394 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 760 transitions. [2021-10-13 19:45:53,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 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) [2021-10-13 19:45:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 760 transitions. [2021-10-13 19:45:53,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:53,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:53,395 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:53,430 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 [2021-10-13 19:45:53,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:53,610 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:53,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:53,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1201303880, now seen corresponding path program 3 times [2021-10-13 19:45:53,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:53,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988246492] [2021-10-13 19:45:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:53,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:45:54,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:54,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988246492] [2021-10-13 19:45:54,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988246492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:54,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157058460] [2021-10-13 19:45:54,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:45:54,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:54,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:54,834 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) [2021-10-13 19:45:54,850 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 [2021-10-13 19:45:55,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:45:55,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:55,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:45:55,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:55,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157058460] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:55,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:55,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6] total 21 [2021-10-13 19:45:55,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086556401] [2021-10-13 19:45:55,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:45:55,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:55,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:45:55,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:45:55,542 INFO L87 Difference]: Start difference. First operand 302 states and 760 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:45:57,281 INFO L93 Difference]: Finished difference Result 545 states and 1202 transitions. [2021-10-13 19:45:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:45:57,281 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:45:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:45:57,284 INFO L225 Difference]: With dead ends: 545 [2021-10-13 19:45:57,284 INFO L226 Difference]: Without dead ends: 495 [2021-10-13 19:45:57,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1727.4ms TimeCoverageRelationStatistics Valid=196, Invalid=1526, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:45:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-13 19:45:57,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 321. [2021-10-13 19:45:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 309 states have (on average 2.6893203883495147) internal successors, (831), 320 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 831 transitions. [2021-10-13 19:45:57,295 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 831 transitions. Word has length 18 [2021-10-13 19:45:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:45:57,295 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 831 transitions. [2021-10-13 19:45:57,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:45:57,295 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 831 transitions. [2021-10-13 19:45:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:45:57,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:45:57,296 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:45:57,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-13 19:45:57,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-13 19:45:57,511 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:45:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:45:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1184553650, now seen corresponding path program 4 times [2021-10-13 19:45:57,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:45:57,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786480284] [2021-10-13 19:45:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:45:57,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:45:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:45:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:45:58,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:45:58,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786480284] [2021-10-13 19:45:58,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786480284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:58,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256050681] [2021-10-13 19:45:58,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:45:58,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:45:58,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:45:58,646 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) [2021-10-13 19:45:58,647 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 [2021-10-13 19:45:59,142 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:45:59,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:45:59,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:45:59,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:45:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 19:45:59,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256050681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:45:59,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:45:59,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2021-10-13 19:45:59,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105025829] [2021-10-13 19:45:59,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 19:45:59,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:45:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 19:45:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-13 19:45:59,398 INFO L87 Difference]: Start difference. First operand 321 states and 831 transitions. Second operand has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:00,949 INFO L93 Difference]: Finished difference Result 524 states and 1222 transitions. [2021-10-13 19:46:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:46:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 19:46:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:00,953 INFO L225 Difference]: With dead ends: 524 [2021-10-13 19:46:00,953 INFO L226 Difference]: Without dead ends: 524 [2021-10-13 19:46:00,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1584.0ms TimeCoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:46:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-13 19:46:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 349. [2021-10-13 19:46:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 337 states have (on average 2.71513353115727) internal successors, (915), 348 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 915 transitions. [2021-10-13 19:46:00,963 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 915 transitions. Word has length 18 [2021-10-13 19:46:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:00,964 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 915 transitions. [2021-10-13 19:46:00,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 915 transitions. [2021-10-13 19:46:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:46:00,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:00,964 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:00,990 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 [2021-10-13 19:46:01,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-13 19:46:01,165 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:01,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1184553649, now seen corresponding path program 3 times [2021-10-13 19:46:01,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:01,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049577613] [2021-10-13 19:46:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:01,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:02,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:02,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049577613] [2021-10-13 19:46:02,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049577613] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:02,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594373602] [2021-10-13 19:46:02,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:46:02,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:02,541 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) [2021-10-13 19:46:02,542 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 [2021-10-13 19:46:03,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:46:03,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:03,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 19:46:03,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 19:46:03,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594373602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:03,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:03,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 4] total 19 [2021-10-13 19:46:03,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780575966] [2021-10-13 19:46:03,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:46:03,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:46:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:46:03,444 INFO L87 Difference]: Start difference. First operand 349 states and 915 transitions. Second operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 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) [2021-10-13 19:46:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:05,240 INFO L93 Difference]: Finished difference Result 624 states and 1528 transitions. [2021-10-13 19:46:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:46:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 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 18 [2021-10-13 19:46:05,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:05,245 INFO L225 Difference]: With dead ends: 624 [2021-10-13 19:46:05,245 INFO L226 Difference]: Without dead ends: 610 [2021-10-13 19:46:05,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1726.7ms TimeCoverageRelationStatistics Valid=173, Invalid=1233, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:46:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-13 19:46:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 463. [2021-10-13 19:46:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 451 states have (on average 2.789356984478936) internal successors, (1258), 462 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1258 transitions. [2021-10-13 19:46:05,261 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1258 transitions. Word has length 18 [2021-10-13 19:46:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:05,261 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1258 transitions. [2021-10-13 19:46:05,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 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) [2021-10-13 19:46:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1258 transitions. [2021-10-13 19:46:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 19:46:05,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:05,262 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:05,298 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 [2021-10-13 19:46:05,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-13 19:46:05,478 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:05,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1183429280, now seen corresponding path program 5 times [2021-10-13 19:46:05,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:05,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775127504] [2021-10-13 19:46:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:05,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:46:06,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:06,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775127504] [2021-10-13 19:46:06,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775127504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:06,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675817508] [2021-10-13 19:46:06,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:06,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:06,163 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) [2021-10-13 19:46:06,180 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 [2021-10-13 19:46:06,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:46:06,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:06,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 19:46:06,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:06,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675817508] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:06,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:06,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2021-10-13 19:46:06,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445835859] [2021-10-13 19:46:06,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 19:46:06,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:06,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 19:46:06,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-10-13 19:46:06,825 INFO L87 Difference]: Start difference. First operand 463 states and 1258 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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) [2021-10-13 19:46:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:07,570 INFO L93 Difference]: Finished difference Result 771 states and 1920 transitions. [2021-10-13 19:46:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:46:07,570 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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 18 [2021-10-13 19:46:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:07,575 INFO L225 Difference]: With dead ends: 771 [2021-10-13 19:46:07,575 INFO L226 Difference]: Without dead ends: 732 [2021-10-13 19:46:07,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 770.8ms TimeCoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:46:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-10-13 19:46:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 368. [2021-10-13 19:46:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 356 states have (on average 2.7331460674157304) internal successors, (973), 367 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 973 transitions. [2021-10-13 19:46:07,587 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 973 transitions. Word has length 18 [2021-10-13 19:46:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:07,588 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 973 transitions. [2021-10-13 19:46:07,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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) [2021-10-13 19:46:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 973 transitions. [2021-10-13 19:46:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 19:46:07,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:07,589 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:07,623 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 [2021-10-13 19:46:07,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-13 19:46:07,801 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:07,802 INFO L82 PathProgramCache]: Analyzing trace with hash 877680922, now seen corresponding path program 4 times [2021-10-13 19:46:07,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:07,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315824339] [2021-10-13 19:46:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:07,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:46:08,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:08,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315824339] [2021-10-13 19:46:08,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315824339] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:08,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34436679] [2021-10-13 19:46:08,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:46:08,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:08,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:08,168 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) [2021-10-13 19:46:08,174 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 [2021-10-13 19:46:08,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:46:08,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 19:46:08,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:46:09,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34436679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:09,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:09,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-13 19:46:09,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132088563] [2021-10-13 19:46:09,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 19:46:09,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:09,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 19:46:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-10-13 19:46:09,219 INFO L87 Difference]: Start difference. First operand 368 states and 973 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-10-13 19:46:10,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:10,008 INFO L93 Difference]: Finished difference Result 428 states and 1090 transitions. [2021-10-13 19:46:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 19:46:10,008 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 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 [2021-10-13 19:46:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:10,010 INFO L225 Difference]: With dead ends: 428 [2021-10-13 19:46:10,010 INFO L226 Difference]: Without dead ends: 403 [2021-10-13 19:46:10,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 810.8ms TimeCoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:46:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-13 19:46:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 397. [2021-10-13 19:46:10,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 385 states have (on average 2.7116883116883117) internal successors, (1044), 396 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1044 transitions. [2021-10-13 19:46:10,018 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1044 transitions. Word has length 20 [2021-10-13 19:46:10,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:10,018 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1044 transitions. [2021-10-13 19:46:10,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 20 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) [2021-10-13 19:46:10,018 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1044 transitions. [2021-10-13 19:46:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:46:10,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:10,019 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:10,048 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 [2021-10-13 19:46:10,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:10,233 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:10,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1494152069, now seen corresponding path program 4 times [2021-10-13 19:46:10,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:10,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342143105] [2021-10-13 19:46:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:10,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 19:46:10,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:10,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342143105] [2021-10-13 19:46:10,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342143105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:10,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153087152] [2021-10-13 19:46:10,329 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:46:10,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:10,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:10,331 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) [2021-10-13 19:46:10,364 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 [2021-10-13 19:46:10,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:46:10,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:10,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:46:10,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 19:46:10,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153087152] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:10,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:10,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-10-13 19:46:10,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807090661] [2021-10-13 19:46:10,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 19:46:10,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:10,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 19:46:10,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:46:10,960 INFO L87 Difference]: Start difference. First operand 397 states and 1044 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:10,996 INFO L93 Difference]: Finished difference Result 629 states and 1602 transitions. [2021-10-13 19:46:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:46:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:46:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:11,000 INFO L225 Difference]: With dead ends: 629 [2021-10-13 19:46:11,000 INFO L226 Difference]: Without dead ends: 605 [2021-10-13 19:46:11,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 19:46:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-10-13 19:46:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 463. [2021-10-13 19:46:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 451 states have (on average 2.8758314855875833) internal successors, (1297), 462 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1297 transitions. [2021-10-13 19:46:11,012 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1297 transitions. Word has length 21 [2021-10-13 19:46:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:11,013 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1297 transitions. [2021-10-13 19:46:11,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:11,013 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1297 transitions. [2021-10-13 19:46:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:46:11,013 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:11,013 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:11,049 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 [2021-10-13 19:46:11,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-13 19:46:11,227 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1902870174, now seen corresponding path program 6 times [2021-10-13 19:46:11,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:11,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797856210] [2021-10-13 19:46:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:11,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 19:46:11,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:11,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797856210] [2021-10-13 19:46:11,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797856210] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:11,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228868166] [2021-10-13 19:46:11,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:46:11,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:11,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:11,311 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) [2021-10-13 19:46:11,340 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 [2021-10-13 19:46:11,852 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:46:11,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:11,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 19:46:11,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 19:46:11,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228868166] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:11,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:11,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-13 19:46:11,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104445877] [2021-10-13 19:46:11,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 19:46:11,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 19:46:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:46:11,906 INFO L87 Difference]: Start difference. First operand 463 states and 1297 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:11,927 INFO L93 Difference]: Finished difference Result 279 states and 606 transitions. [2021-10-13 19:46:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 19:46:11,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:46:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:11,930 INFO L225 Difference]: With dead ends: 279 [2021-10-13 19:46:11,930 INFO L226 Difference]: Without dead ends: 269 [2021-10-13 19:46:11,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 19:46:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-13 19:46:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 231. [2021-10-13 19:46:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 219 states have (on average 2.2465753424657535) internal successors, (492), 230 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 492 transitions. [2021-10-13 19:46:11,937 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 492 transitions. Word has length 21 [2021-10-13 19:46:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:11,939 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 492 transitions. [2021-10-13 19:46:11,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 492 transitions. [2021-10-13 19:46:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 19:46:11,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:11,940 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:11,981 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 [2021-10-13 19:46:12,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:12,154 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash -98441377, now seen corresponding path program 5 times [2021-10-13 19:46:12,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:12,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136920262] [2021-10-13 19:46:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:12,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:13,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:13,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136920262] [2021-10-13 19:46:13,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136920262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:13,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857618504] [2021-10-13 19:46:13,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:13,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:13,601 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) [2021-10-13 19:46:13,604 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 [2021-10-13 19:46:14,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:46:14,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:14,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 19:46:14,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 19:46:14,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857618504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:14,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:14,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 23 [2021-10-13 19:46:14,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550956868] [2021-10-13 19:46:14,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 19:46:14,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 19:46:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-10-13 19:46:14,416 INFO L87 Difference]: Start difference. First operand 231 states and 492 transitions. Second operand has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:16,058 INFO L93 Difference]: Finished difference Result 294 states and 585 transitions. [2021-10-13 19:46:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:46:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 19:46:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:16,061 INFO L225 Difference]: With dead ends: 294 [2021-10-13 19:46:16,061 INFO L226 Difference]: Without dead ends: 246 [2021-10-13 19:46:16,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1853.9ms TimeCoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 19:46:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-13 19:46:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 206. [2021-10-13 19:46:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 194 states have (on average 2.3092783505154637) internal successors, (448), 205 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 448 transitions. [2021-10-13 19:46:16,067 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 448 transitions. Word has length 21 [2021-10-13 19:46:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:16,067 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 448 transitions. [2021-10-13 19:46:16,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 448 transitions. [2021-10-13 19:46:16,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:46:16,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:16,068 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:16,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-13 19:46:16,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-13 19:46:16,271 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:16,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1342802983, now seen corresponding path program 5 times [2021-10-13 19:46:16,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:16,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445600580] [2021-10-13 19:46:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:16,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:16,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:16,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445600580] [2021-10-13 19:46:16,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445600580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:16,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009823723] [2021-10-13 19:46:16,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:46:16,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:16,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:16,732 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) [2021-10-13 19:46:16,733 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 [2021-10-13 19:46:17,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 19:46:17,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:17,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-13 19:46:17,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:17,414 INFO L354 Elim1Store]: treesize reduction 244, result has 14.7 percent of original size [2021-10-13 19:46:17,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 case distinctions, treesize of input 21 treesize of output 47 [2021-10-13 19:46:18,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:18,472 INFO L354 Elim1Store]: treesize reduction 104, result has 35.4 percent of original size [2021-10-13 19:46:18,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 52 treesize of output 94 [2021-10-13 19:46:18,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 19:46:18,807 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 17 treesize of output 13 [2021-10-13 19:46:18,874 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 [2021-10-13 19:46:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:19,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009823723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:19,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:19,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2021-10-13 19:46:19,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990023608] [2021-10-13 19:46:19,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:46:19,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:46:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:46:19,283 INFO L87 Difference]: Start difference. First operand 206 states and 448 transitions. Second operand has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:20,759 INFO L93 Difference]: Finished difference Result 470 states and 998 transitions. [2021-10-13 19:46:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 19:46:20,760 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:46:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:20,763 INFO L225 Difference]: With dead ends: 470 [2021-10-13 19:46:20,763 INFO L226 Difference]: Without dead ends: 452 [2021-10-13 19:46:20,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1386.7ms TimeCoverageRelationStatistics Valid=239, Invalid=1831, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:46:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-13 19:46:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 346. [2021-10-13 19:46:20,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 334 states have (on average 2.3263473053892216) internal successors, (777), 345 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 777 transitions. [2021-10-13 19:46:20,774 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 777 transitions. Word has length 23 [2021-10-13 19:46:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:20,775 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 777 transitions. [2021-10-13 19:46:20,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 777 transitions. [2021-10-13 19:46:20,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:46:20,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:20,777 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:20,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-10-13 19:46:20,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:20,990 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1342803010, now seen corresponding path program 6 times [2021-10-13 19:46:20,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:20,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133868901] [2021-10-13 19:46:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:20,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:21,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:21,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133868901] [2021-10-13 19:46:21,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133868901] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:21,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833454224] [2021-10-13 19:46:21,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:46:21,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:21,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:21,530 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) [2021-10-13 19:46:21,551 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 [2021-10-13 19:46:22,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:46:22,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:22,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-13 19:46:22,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:22,368 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 [2021-10-13 19:46:22,444 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 19:46:22,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:46:22,532 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 19:46:22,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:46:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:22,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833454224] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:22,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:22,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-13 19:46:22,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442266617] [2021-10-13 19:46:22,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 19:46:22,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:22,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 19:46:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:46:22,974 INFO L87 Difference]: Start difference. First operand 346 states and 777 transitions. Second operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:24,217 INFO L93 Difference]: Finished difference Result 574 states and 1235 transitions. [2021-10-13 19:46:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 19:46:24,218 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:46:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:24,221 INFO L225 Difference]: With dead ends: 574 [2021-10-13 19:46:24,221 INFO L226 Difference]: Without dead ends: 562 [2021-10-13 19:46:24,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1191.2ms TimeCoverageRelationStatistics Valid=178, Invalid=1382, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 19:46:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-13 19:46:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 430. [2021-10-13 19:46:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 418 states have (on average 2.3301435406698565) internal successors, (974), 429 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 974 transitions. [2021-10-13 19:46:24,234 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 974 transitions. Word has length 23 [2021-10-13 19:46:24,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:24,234 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 974 transitions. [2021-10-13 19:46:24,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:24,234 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 974 transitions. [2021-10-13 19:46:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:46:24,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:24,235 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:24,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-13 19:46:24,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:24,449 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:24,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:24,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1344355180, now seen corresponding path program 7 times [2021-10-13 19:46:24,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:24,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657320180] [2021-10-13 19:46:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:24,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:46:24,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:24,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657320180] [2021-10-13 19:46:24,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657320180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:24,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651910668] [2021-10-13 19:46:24,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:46:24,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:24,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:24,913 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) [2021-10-13 19:46:24,914 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 [2021-10-13 19:46:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:25,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 19:46:25,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:25,792 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 [2021-10-13 19:46:25,879 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:25,879 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 [2021-10-13 19:46:25,973 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:25,973 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 [2021-10-13 19:46:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:26,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651910668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:26,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:26,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-13 19:46:26,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190491469] [2021-10-13 19:46:26,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 19:46:26,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 19:46:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=739, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:46:26,531 INFO L87 Difference]: Start difference. First operand 430 states and 974 transitions. Second operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:28,588 INFO L93 Difference]: Finished difference Result 564 states and 1203 transitions. [2021-10-13 19:46:28,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 19:46:28,588 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:46:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:28,590 INFO L225 Difference]: With dead ends: 564 [2021-10-13 19:46:28,591 INFO L226 Difference]: Without dead ends: 524 [2021-10-13 19:46:28,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1955.7ms TimeCoverageRelationStatistics Valid=240, Invalid=2016, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 19:46:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-10-13 19:46:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 454. [2021-10-13 19:46:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 442 states have (on average 2.3076923076923075) internal successors, (1020), 453 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1020 transitions. [2021-10-13 19:46:28,602 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1020 transitions. Word has length 23 [2021-10-13 19:46:28,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:28,603 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1020 transitions. [2021-10-13 19:46:28,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:28,603 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1020 transitions. [2021-10-13 19:46:28,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:46:28,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:28,604 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:28,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-13 19:46:28,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-13 19:46:28,811 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:28,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:28,811 INFO L82 PathProgramCache]: Analyzing trace with hash -997723719, now seen corresponding path program 7 times [2021-10-13 19:46:28,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:28,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868448812] [2021-10-13 19:46:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:28,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:29,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:29,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868448812] [2021-10-13 19:46:29,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868448812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:29,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906938725] [2021-10-13 19:46:29,123 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:46:29,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:29,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:29,125 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) [2021-10-13 19:46:29,146 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 [2021-10-13 19:46:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:29,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 56 conjunts are in the unsatisfiable core [2021-10-13 19:46:29,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:29,981 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 [2021-10-13 19:46:30,074 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-13 19:46:30,074 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 [2021-10-13 19:46:30,213 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:30,214 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 [2021-10-13 19:46:30,359 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:46:30,360 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 [2021-10-13 19:46:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:46:31,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906938725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:31,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:31,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 28 [2021-10-13 19:46:31,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311135485] [2021-10-13 19:46:31,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 19:46:31,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:31,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 19:46:31,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:46:31,427 INFO L87 Difference]: Start difference. First operand 454 states and 1020 transitions. Second operand has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 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) [2021-10-13 19:46:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:54,611 INFO L93 Difference]: Finished difference Result 730 states and 1598 transitions. [2021-10-13 19:46:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 19:46:54,611 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:46:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:54,616 INFO L225 Difference]: With dead ends: 730 [2021-10-13 19:46:54,616 INFO L226 Difference]: Without dead ends: 660 [2021-10-13 19:46:54,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1211 ImplicationChecksByTransitivity, 4131.3ms TimeCoverageRelationStatistics Valid=500, Invalid=5050, Unknown=0, NotChecked=0, Total=5550 [2021-10-13 19:46:54,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-13 19:46:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 478. [2021-10-13 19:46:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 466 states have (on average 2.2703862660944205) internal successors, (1058), 477 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1058 transitions. [2021-10-13 19:46:54,630 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1058 transitions. Word has length 23 [2021-10-13 19:46:54,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:54,630 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1058 transitions. [2021-10-13 19:46:54,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 29 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) [2021-10-13 19:46:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1058 transitions. [2021-10-13 19:46:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:46:54,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:54,632 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:54,670 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 [2021-10-13 19:46:54,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-13 19:46:54,847 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:54,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:54,847 INFO L82 PathProgramCache]: Analyzing trace with hash -997723718, now seen corresponding path program 6 times [2021-10-13 19:46:54,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:54,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066272629] [2021-10-13 19:46:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:54,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:55,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:55,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066272629] [2021-10-13 19:46:55,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066272629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:55,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592094107] [2021-10-13 19:46:55,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:46:55,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:55,214 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) [2021-10-13 19:46:55,233 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 [2021-10-13 19:46:56,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:46:56,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:56,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 19:46:56,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:56,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592094107] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:56,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:46:56,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2021-10-13 19:46:56,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593444676] [2021-10-13 19:46:56,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:46:56,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:46:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:46:56,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:46:56,569 INFO L87 Difference]: Start difference. First operand 478 states and 1058 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 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) [2021-10-13 19:46:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:46:57,971 INFO L93 Difference]: Finished difference Result 1054 states and 2206 transitions. [2021-10-13 19:46:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 19:46:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 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 23 [2021-10-13 19:46:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:46:57,976 INFO L225 Difference]: With dead ends: 1054 [2021-10-13 19:46:57,976 INFO L226 Difference]: Without dead ends: 1036 [2021-10-13 19:46:57,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1182.3ms TimeCoverageRelationStatistics Valid=213, Invalid=1119, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:46:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-10-13 19:46:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 776. [2021-10-13 19:46:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 764 states have (on average 2.2657068062827226) internal successors, (1731), 775 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:46:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1731 transitions. [2021-10-13 19:46:58,016 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1731 transitions. Word has length 23 [2021-10-13 19:46:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:46:58,016 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1731 transitions. [2021-10-13 19:46:58,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 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) [2021-10-13 19:46:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1731 transitions. [2021-10-13 19:46:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:46:58,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:46:58,018 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:46:58,054 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 [2021-10-13 19:46:58,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-13 19:46:58,234 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:46:58,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:46:58,235 INFO L82 PathProgramCache]: Analyzing trace with hash -979421319, now seen corresponding path program 8 times [2021-10-13 19:46:58,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:46:58,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621188648] [2021-10-13 19:46:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:46:58,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:46:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:46:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:46:58,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:46:58,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621188648] [2021-10-13 19:46:58,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621188648] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:46:58,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424231207] [2021-10-13 19:46:58,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:46:58,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:46:58,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:46:58,554 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) [2021-10-13 19:46:58,577 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 [2021-10-13 19:46:59,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:46:59,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:46:59,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 19:46:59,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:46:59,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:59,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:46:59,375 INFO L354 Elim1Store]: treesize reduction 214, result has 14.7 percent of original size [2021-10-13 19:46:59,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 47 [2021-10-13 19:47:00,144 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 [2021-10-13 19:47:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:00,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:00,497 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-13 19:47:00,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 52 treesize of output 98 [2021-10-13 19:47:00,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:47:00,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2021-10-13 19:47:00,757 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 19:47:00,758 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 49 treesize of output 48 [2021-10-13 19:47:00,832 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:00,832 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 [2021-10-13 19:47:00,926 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:00,926 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 [2021-10-13 19:47:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:47:01,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424231207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:01,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:01,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-13 19:47:01,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471239696] [2021-10-13 19:47:01,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 19:47:01,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:01,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 19:47:01,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-10-13 19:47:01,333 INFO L87 Difference]: Start difference. First operand 776 states and 1731 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 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) [2021-10-13 19:47:03,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:03,007 INFO L93 Difference]: Finished difference Result 838 states and 1778 transitions. [2021-10-13 19:47:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 19:47:03,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:47:03,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:03,013 INFO L225 Difference]: With dead ends: 838 [2021-10-13 19:47:03,013 INFO L226 Difference]: Without dead ends: 794 [2021-10-13 19:47:03,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1603.5ms TimeCoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:47:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-10-13 19:47:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 596. [2021-10-13 19:47:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 584 states have (on average 2.220890410958904) internal successors, (1297), 595 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 1297 transitions. [2021-10-13 19:47:03,029 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 1297 transitions. Word has length 23 [2021-10-13 19:47:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:03,029 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 1297 transitions. [2021-10-13 19:47:03,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 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) [2021-10-13 19:47:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 1297 transitions. [2021-10-13 19:47:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:47:03,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:03,031 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:03,064 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 [2021-10-13 19:47:03,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:03,246 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:03,247 INFO L82 PathProgramCache]: Analyzing trace with hash -979421318, now seen corresponding path program 7 times [2021-10-13 19:47:03,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:03,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140987029] [2021-10-13 19:47:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:03,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:47:03,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:03,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140987029] [2021-10-13 19:47:03,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140987029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:03,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724718304] [2021-10-13 19:47:03,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:47:03,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:03,628 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) [2021-10-13 19:47:03,651 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 [2021-10-13 19:47:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:04,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 19:47:04,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 19:47:04,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724718304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:04,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:04,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-13 19:47:04,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731806073] [2021-10-13 19:47:04,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 19:47:04,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 19:47:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-10-13 19:47:04,615 INFO L87 Difference]: Start difference. First operand 596 states and 1297 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 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) [2021-10-13 19:47:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:05,437 INFO L93 Difference]: Finished difference Result 582 states and 1202 transitions. [2021-10-13 19:47:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 19:47:05,437 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 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 23 [2021-10-13 19:47:05,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:05,440 INFO L225 Difference]: With dead ends: 582 [2021-10-13 19:47:05,440 INFO L226 Difference]: Without dead ends: 562 [2021-10-13 19:47:05,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 715.2ms TimeCoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:47:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-13 19:47:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 558. [2021-10-13 19:47:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 550 states have (on average 2.12) internal successors, (1166), 557 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 1166 transitions. [2021-10-13 19:47:05,452 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 1166 transitions. Word has length 23 [2021-10-13 19:47:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 1166 transitions. [2021-10-13 19:47:05,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 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) [2021-10-13 19:47:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1166 transitions. [2021-10-13 19:47:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:47:05,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:05,453 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:05,484 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 [2021-10-13 19:47:05,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:05,666 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:05,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1132472902, now seen corresponding path program 8 times [2021-10-13 19:47:05,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:05,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845489312] [2021-10-13 19:47:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:05,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:06,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:06,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845489312] [2021-10-13 19:47:06,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845489312] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:06,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828733683] [2021-10-13 19:47:06,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:47:06,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:06,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:06,105 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) [2021-10-13 19:47:06,106 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 [2021-10-13 19:47:06,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:47:06,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:06,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 19:47:06,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:07,111 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 [2021-10-13 19:47:07,203 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:07,203 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 [2021-10-13 19:47:07,371 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:47:07,372 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 [2021-10-13 19:47:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:47:07,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828733683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:07,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:07,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 26 [2021-10-13 19:47:07,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176884672] [2021-10-13 19:47:07,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 19:47:07,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 19:47:07,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-10-13 19:47:07,803 INFO L87 Difference]: Start difference. First operand 558 states and 1166 transitions. Second operand has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:09,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:09,809 INFO L93 Difference]: Finished difference Result 764 states and 1507 transitions. [2021-10-13 19:47:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 19:47:09,810 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:47:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:09,812 INFO L225 Difference]: With dead ends: 764 [2021-10-13 19:47:09,813 INFO L226 Difference]: Without dead ends: 580 [2021-10-13 19:47:09,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1957.5ms TimeCoverageRelationStatistics Valid=286, Invalid=2066, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 19:47:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-13 19:47:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 426. [2021-10-13 19:47:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 418 states have (on average 2.117224880382775) internal successors, (885), 425 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 885 transitions. [2021-10-13 19:47:09,824 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 885 transitions. Word has length 23 [2021-10-13 19:47:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:09,824 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 885 transitions. [2021-10-13 19:47:09,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 27 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 885 transitions. [2021-10-13 19:47:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 19:47:09,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:09,826 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:09,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:10,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:10,038 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:10,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1150775302, now seen corresponding path program 9 times [2021-10-13 19:47:10,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:10,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324434591] [2021-10-13 19:47:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:10,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:10,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:10,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324434591] [2021-10-13 19:47:10,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324434591] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:10,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081324285] [2021-10-13 19:47:10,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:47:10,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:10,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:10,613 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) [2021-10-13 19:47:10,614 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 [2021-10-13 19:47:11,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:47:11,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:11,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-13 19:47:11,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:11,588 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 [2021-10-13 19:47:11,644 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 [2021-10-13 19:47:11,723 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 19:47:11,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:47:11,856 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-10-13 19:47:11,856 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 28 treesize of output 27 [2021-10-13 19:47:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 19:47:12,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081324285] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:12,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:12,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2021-10-13 19:47:12,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143924302] [2021-10-13 19:47:12,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 19:47:12,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:12,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 19:47:12,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:47:12,373 INFO L87 Difference]: Start difference. First operand 426 states and 885 transitions. Second operand has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:14,763 INFO L93 Difference]: Finished difference Result 478 states and 965 transitions. [2021-10-13 19:47:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 19:47:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-13 19:47:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:14,766 INFO L225 Difference]: With dead ends: 478 [2021-10-13 19:47:14,766 INFO L226 Difference]: Without dead ends: 444 [2021-10-13 19:47:14,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2528.0ms TimeCoverageRelationStatistics Valid=346, Invalid=1816, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 19:47:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-13 19:47:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 384. [2021-10-13 19:47:14,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 376 states have (on average 2.154255319148936) internal successors, (810), 383 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 810 transitions. [2021-10-13 19:47:14,773 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 810 transitions. Word has length 23 [2021-10-13 19:47:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:14,773 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 810 transitions. [2021-10-13 19:47:14,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 810 transitions. [2021-10-13 19:47:14,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:47:14,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:14,775 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:14,813 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 [2021-10-13 19:47:14,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:14,992 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2042235065, now seen corresponding path program 6 times [2021-10-13 19:47:14,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:14,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119783323] [2021-10-13 19:47:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:14,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:15,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:15,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119783323] [2021-10-13 19:47:15,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119783323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:15,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030962429] [2021-10-13 19:47:15,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:47:15,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:15,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:15,868 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) [2021-10-13 19:47:15,872 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 [2021-10-13 19:47:16,726 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 19:47:16,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:16,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 19:47:16,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-13 19:47:16,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030962429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:16,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:16,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 20 [2021-10-13 19:47:16,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045047596] [2021-10-13 19:47:16,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 19:47:16,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:16,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 19:47:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-10-13 19:47:16,991 INFO L87 Difference]: Start difference. First operand 384 states and 810 transitions. Second operand has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 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) [2021-10-13 19:47:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:18,414 INFO L93 Difference]: Finished difference Result 492 states and 1002 transitions. [2021-10-13 19:47:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 19:47:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 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 24 [2021-10-13 19:47:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:18,417 INFO L225 Difference]: With dead ends: 492 [2021-10-13 19:47:18,417 INFO L226 Difference]: Without dead ends: 492 [2021-10-13 19:47:18,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1525.4ms TimeCoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 19:47:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-10-13 19:47:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 370. [2021-10-13 19:47:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 365 states have (on average 2.0931506849315067) internal successors, (764), 369 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 764 transitions. [2021-10-13 19:47:18,423 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 764 transitions. Word has length 24 [2021-10-13 19:47:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:18,424 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 764 transitions. [2021-10-13 19:47:18,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 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) [2021-10-13 19:47:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 764 transitions. [2021-10-13 19:47:18,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:47:18,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:18,442 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:18,470 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 [2021-10-13 19:47:18,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-10-13 19:47:18,642 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2042235092, now seen corresponding path program 10 times [2021-10-13 19:47:18,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:18,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106740567] [2021-10-13 19:47:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:18,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:21,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:21,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106740567] [2021-10-13 19:47:21,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106740567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:21,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48236288] [2021-10-13 19:47:21,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:47:21,057 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:21,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:21,058 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) [2021-10-13 19:47:21,059 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 [2021-10-13 19:47:21,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:47:21,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:21,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 19:47:21,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 19:47:22,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48236288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:22,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:22,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 6] total 27 [2021-10-13 19:47:22,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522496733] [2021-10-13 19:47:22,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 19:47:22,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 19:47:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2021-10-13 19:47:22,281 INFO L87 Difference]: Start difference. First operand 370 states and 764 transitions. Second operand has 29 states, 28 states have (on average 1.5) internal successors, (42), 28 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) [2021-10-13 19:47:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:24,819 INFO L93 Difference]: Finished difference Result 451 states and 911 transitions. [2021-10-13 19:47:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 19:47:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.5) internal successors, (42), 28 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 24 [2021-10-13 19:47:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:24,822 INFO L225 Difference]: With dead ends: 451 [2021-10-13 19:47:24,822 INFO L226 Difference]: Without dead ends: 443 [2021-10-13 19:47:24,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2793.9ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 19:47:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-13 19:47:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 364. [2021-10-13 19:47:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 359 states have (on average 2.103064066852368) internal successors, (755), 363 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 755 transitions. [2021-10-13 19:47:24,832 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 755 transitions. Word has length 24 [2021-10-13 19:47:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:24,833 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 755 transitions. [2021-10-13 19:47:24,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.5) internal successors, (42), 28 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) [2021-10-13 19:47:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 755 transitions. [2021-10-13 19:47:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:47:24,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:24,834 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:24,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:25,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-10-13 19:47:25,048 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:25,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:25,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2043787262, now seen corresponding path program 11 times [2021-10-13 19:47:25,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:25,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977111229] [2021-10-13 19:47:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:25,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:26,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:26,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977111229] [2021-10-13 19:47:26,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977111229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:26,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95514427] [2021-10-13 19:47:26,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:47:26,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:26,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:26,144 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) [2021-10-13 19:47:26,151 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 [2021-10-13 19:47:27,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:47:27,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:27,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 19:47:27,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 19:47:27,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95514427] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:27,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:27,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 28 [2021-10-13 19:47:27,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869497230] [2021-10-13 19:47:27,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-13 19:47:27,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-13 19:47:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2021-10-13 19:47:27,414 INFO L87 Difference]: Start difference. First operand 364 states and 755 transitions. Second operand has 30 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:28,959 INFO L93 Difference]: Finished difference Result 489 states and 971 transitions. [2021-10-13 19:47:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 19:47:28,960 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 19:47:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:28,961 INFO L225 Difference]: With dead ends: 489 [2021-10-13 19:47:28,961 INFO L226 Difference]: Without dead ends: 291 [2021-10-13 19:47:28,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1893.1ms TimeCoverageRelationStatistics Valid=287, Invalid=2365, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:47:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-13 19:47:28,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 206. [2021-10-13 19:47:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 2.053921568627451) internal successors, (419), 205 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 419 transitions. [2021-10-13 19:47:28,967 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 419 transitions. Word has length 24 [2021-10-13 19:47:28,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:28,967 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 419 transitions. [2021-10-13 19:47:28,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 29 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 419 transitions. [2021-10-13 19:47:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 19:47:28,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:28,968 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:28,996 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 [2021-10-13 19:47:29,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-13 19:47:29,174 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:29,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:29,174 INFO L82 PathProgramCache]: Analyzing trace with hash 798852558, now seen corresponding path program 9 times [2021-10-13 19:47:29,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:29,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029054881] [2021-10-13 19:47:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:29,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:47:30,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:30,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029054881] [2021-10-13 19:47:30,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029054881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:30,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623453212] [2021-10-13 19:47:30,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 19:47:30,061 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:30,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:30,062 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) [2021-10-13 19:47:30,077 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 [2021-10-13 19:47:31,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 19:47:31,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:31,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 19:47:31,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:31,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:31,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:31,118 INFO L354 Elim1Store]: treesize reduction 214, result has 14.7 percent of original size [2021-10-13 19:47:31,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 47 [2021-10-13 19:47:31,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-10-13 19:47:31,821 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-10-13 19:47:31,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-10-13 19:47:32,140 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-10-13 19:47:32,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2021-10-13 19:47:32,496 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-10-13 19:47:32,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 55 [2021-10-13 19:47:32,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:32,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 19:47:32,735 INFO L354 Elim1Store]: treesize reduction 92, result has 39.9 percent of original size [2021-10-13 19:47:32,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 52 treesize of output 98 [2021-10-13 19:47:32,945 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-13 19:47:32,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2021-10-13 19:47:32,991 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-10-13 19:47:32,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 66 [2021-10-13 19:47:33,068 INFO L354 Elim1Store]: treesize reduction 212, result has 14.2 percent of original size [2021-10-13 19:47:33,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 78 [2021-10-13 19:47:33,206 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-10-13 19:47:33,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-10-13 19:47:33,360 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-10-13 19:47:33,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 67 [2021-10-13 19:47:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 19:47:33,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623453212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:33,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:33,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-13 19:47:33,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382140582] [2021-10-13 19:47:33,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:47:33,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:47:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:47:33,646 INFO L87 Difference]: Start difference. First operand 206 states and 419 transitions. Second operand has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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) [2021-10-13 19:47:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:35,663 INFO L93 Difference]: Finished difference Result 461 states and 916 transitions. [2021-10-13 19:47:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 19:47:35,664 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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 24 [2021-10-13 19:47:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:35,664 INFO L225 Difference]: With dead ends: 461 [2021-10-13 19:47:35,664 INFO L226 Difference]: Without dead ends: 207 [2021-10-13 19:47:35,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2367.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 19:47:35,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-10-13 19:47:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-10-13 19:47:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 2.048780487804878) internal successors, (420), 206 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 420 transitions. [2021-10-13 19:47:35,669 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 420 transitions. Word has length 24 [2021-10-13 19:47:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:35,669 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 420 transitions. [2021-10-13 19:47:35,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.6) internal successors, (40), 25 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) [2021-10-13 19:47:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 420 transitions. [2021-10-13 19:47:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:47:35,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:35,670 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:35,697 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 [2021-10-13 19:47:35,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:35,873 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash 610025027, now seen corresponding path program 10 times [2021-10-13 19:47:35,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:35,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841767016] [2021-10-13 19:47:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:35,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:47:37,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:37,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841767016] [2021-10-13 19:47:37,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841767016] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:37,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867564571] [2021-10-13 19:47:37,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 19:47:37,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:37,082 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) [2021-10-13 19:47:37,083 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 [2021-10-13 19:47:38,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 19:47:38,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:38,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 19:47:38,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 19:47:38,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867564571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:38,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:38,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 24 [2021-10-13 19:47:38,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579138912] [2021-10-13 19:47:38,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 19:47:38,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:38,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 19:47:38,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-13 19:47:38,378 INFO L87 Difference]: Start difference. First operand 207 states and 420 transitions. Second operand has 26 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:40,541 INFO L93 Difference]: Finished difference Result 446 states and 883 transitions. [2021-10-13 19:47:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:47:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:47:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:40,543 INFO L225 Difference]: With dead ends: 446 [2021-10-13 19:47:40,543 INFO L226 Difference]: Without dead ends: 408 [2021-10-13 19:47:40,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2211.5ms TimeCoverageRelationStatistics Valid=288, Invalid=2682, Unknown=0, NotChecked=0, Total=2970 [2021-10-13 19:47:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-10-13 19:47:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 224. [2021-10-13 19:47:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 2.0045045045045047) internal successors, (445), 223 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 445 transitions. [2021-10-13 19:47:40,548 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 445 transitions. Word has length 25 [2021-10-13 19:47:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:40,548 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 445 transitions. [2021-10-13 19:47:40,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 445 transitions. [2021-10-13 19:47:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 19:47:40,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:40,549 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:40,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-13 19:47:40,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-13 19:47:40,750 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:40,750 INFO L82 PathProgramCache]: Analyzing trace with hash 626775257, now seen corresponding path program 11 times [2021-10-13 19:47:40,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:40,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068235635] [2021-10-13 19:47:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:40,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:47:42,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:42,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068235635] [2021-10-13 19:47:42,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068235635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:42,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200119853] [2021-10-13 19:47:42,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 19:47:42,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:42,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:42,866 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) [2021-10-13 19:47:42,867 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 [2021-10-13 19:47:43,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 19:47:43,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:43,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 19:47:43,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 19:47:44,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200119853] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:44,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:44,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 29 [2021-10-13 19:47:44,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029855953] [2021-10-13 19:47:44,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-13 19:47:44,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-13 19:47:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2021-10-13 19:47:44,281 INFO L87 Difference]: Start difference. First operand 224 states and 445 transitions. Second operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:47:46,883 INFO L93 Difference]: Finished difference Result 295 states and 571 transitions. [2021-10-13 19:47:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 19:47:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 19:47:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:47:46,884 INFO L225 Difference]: With dead ends: 295 [2021-10-13 19:47:46,884 INFO L226 Difference]: Without dead ends: 281 [2021-10-13 19:47:46,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 2851.6ms TimeCoverageRelationStatistics Valid=213, Invalid=2439, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 19:47:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-10-13 19:47:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 202. [2021-10-13 19:47:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 200 states have (on average 1.95) internal successors, (390), 201 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 390 transitions. [2021-10-13 19:47:46,889 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 390 transitions. Word has length 25 [2021-10-13 19:47:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:47:46,889 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 390 transitions. [2021-10-13 19:47:46,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.5) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:47:46,889 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 390 transitions. [2021-10-13 19:47:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 19:47:46,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:47:46,889 INFO L512 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:47:46,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-13 19:47:47,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:47,090 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:47:47,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:47:47,091 INFO L82 PathProgramCache]: Analyzing trace with hash -930786538, now seen corresponding path program 12 times [2021-10-13 19:47:47,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:47:47,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854224580] [2021-10-13 19:47:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:47:47,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:47:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:47:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 19:47:49,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:47:49,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854224580] [2021-10-13 19:47:49,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854224580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:49,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915327110] [2021-10-13 19:47:49,816 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 19:47:49,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:47:49,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:47:49,817 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) [2021-10-13 19:47:49,818 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 [2021-10-13 19:47:51,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 19:47:51,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:47:51,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-13 19:47:51,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:47:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 19:47:52,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915327110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:47:52,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:47:52,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 35 [2021-10-13 19:47:52,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278084034] [2021-10-13 19:47:52,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-13 19:47:52,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:47:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-13 19:47:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1233, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 19:47:52,821 INFO L87 Difference]: Start difference. First operand 202 states and 390 transitions. Second operand has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:48:38,741 INFO L93 Difference]: Finished difference Result 422 states and 829 transitions. [2021-10-13 19:48:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 19:48:38,741 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 19:48:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:48:38,743 INFO L225 Difference]: With dead ends: 422 [2021-10-13 19:48:38,743 INFO L226 Difference]: Without dead ends: 416 [2021-10-13 19:48:38,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 15859.8ms TimeCoverageRelationStatistics Valid=345, Invalid=4908, Unknown=3, NotChecked=0, Total=5256 [2021-10-13 19:48:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-10-13 19:48:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 251. [2021-10-13 19:48:38,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 2.0160642570281126) internal successors, (502), 250 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) [2021-10-13 19:48:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 502 transitions. [2021-10-13 19:48:38,751 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 502 transitions. Word has length 26 [2021-10-13 19:48:38,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:48:38,751 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 502 transitions. [2021-10-13 19:48:38,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:48:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 502 transitions. [2021-10-13 19:48:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 19:48:38,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:48:38,752 INFO L512 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:48:38,797 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 [2021-10-13 19:48:38,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-13 19:48:38,967 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:48:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:48:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2005412747, now seen corresponding path program 13 times [2021-10-13 19:48:38,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:48:38,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485223968] [2021-10-13 19:48:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:48:38,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:48:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:48:43,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:48:43,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485223968] [2021-10-13 19:48:43,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485223968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:43,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30037275] [2021-10-13 19:48:43,595 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 19:48:43,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:48:43,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:48:43,596 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) [2021-10-13 19:48:43,616 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 [2021-10-13 19:48:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:48:44,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 66 conjunts are in the unsatisfiable core [2021-10-13 19:48:44,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:48:45,532 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 [2021-10-13 19:48:45,696 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-10-13 19:48:45,696 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 [2021-10-13 19:48:45,912 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:48:45,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2021-10-13 19:48:46,152 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 19:48:46,152 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 [2021-10-13 19:48:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 19:48:48,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30037275] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:48:48,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:48:48,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 46 [2021-10-13 19:48:48,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410369094] [2021-10-13 19:48:48,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-13 19:48:48,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:48:48,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-13 19:48:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=2137, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 19:48:48,225 INFO L87 Difference]: Start difference. First operand 251 states and 502 transitions. Second operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:26,736 INFO L93 Difference]: Finished difference Result 501 states and 982 transitions. [2021-10-13 19:49:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-13 19:49:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 19:49:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:26,738 INFO L225 Difference]: With dead ends: 501 [2021-10-13 19:49:26,738 INFO L226 Difference]: Without dead ends: 495 [2021-10-13 19:49:26,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 17560.4ms TimeCoverageRelationStatistics Valid=591, Invalid=9711, Unknown=0, NotChecked=0, Total=10302 [2021-10-13 19:49:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-13 19:49:26,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 342. [2021-10-13 19:49:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 340 states have (on average 2.0088235294117647) internal successors, (683), 341 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 683 transitions. [2021-10-13 19:49:26,748 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 683 transitions. Word has length 27 [2021-10-13 19:49:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:26,748 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 683 transitions. [2021-10-13 19:49:26,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 683 transitions. [2021-10-13 19:49:26,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 19:49:26,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 19:49:26,749 INFO L512 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 19:49:26,789 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 [2021-10-13 19:49:26,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:26,964 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2021-10-13 19:49:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 19:49:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1465713403, now seen corresponding path program 14 times [2021-10-13 19:49:26,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 19:49:26,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703634397] [2021-10-13 19:49:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 19:49:26,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 19:49:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 19:49:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 19:49:29,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 19:49:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703634397] [2021-10-13 19:49:29,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703634397] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:29,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906378928] [2021-10-13 19:49:29,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 19:49:29,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:29,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 19:49:29,358 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) [2021-10-13 19:49:29,358 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 [2021-10-13 19:49:30,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 19:49:30,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 19:49:30,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 19:49:30,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 19:49:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 19:49:31,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906378928] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 19:49:31,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 19:49:31,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 31 [2021-10-13 19:49:31,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754256653] [2021-10-13 19:49:31,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-13 19:49:31,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 19:49:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-13 19:49:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 19:49:31,123 INFO L87 Difference]: Start difference. First operand 342 states and 683 transitions. Second operand has 33 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 19:49:34,312 INFO L93 Difference]: Finished difference Result 564 states and 1091 transitions. [2021-10-13 19:49:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 19:49:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 19:49:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 19:49:34,313 INFO L225 Difference]: With dead ends: 564 [2021-10-13 19:49:34,313 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 19:49:34,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 3988.0ms TimeCoverageRelationStatistics Valid=331, Invalid=3329, Unknown=0, NotChecked=0, Total=3660 [2021-10-13 19:49:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 19:49:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 19:49:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 19:49:34,315 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-13 19:49:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 19:49:34,315 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 19:49:34,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.5625) internal successors, (50), 32 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 19:49:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 19:49:34,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 19:49:34,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,319 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 19:49:34,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 19:49:34,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,322 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,323 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 19:49:34,358 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 [2021-10-13 19:49:34,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 19:49:34,546 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 19:49:34,546 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 19:49:34,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:49:34 BasicIcfg [2021-10-13 19:49:34,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 19:49:34,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 19:49:34,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 19:49:34,550 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 19:49:34,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:41" (3/4) ... [2021-10-13 19:49:34,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 19:49:34,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 19:49:34,562 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 19:49:34,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 19:49:34,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 19:49:34,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 19:49:34,572 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 19:49:34,617 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/weaver/popl20-two-queue.wvr.c-witness.graphml [2021-10-13 19:49:34,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 19:49:34,618 INFO L168 Benchmark]: Toolchain (without parser) took 294542.36 ms. Allocated memory was 151.0 MB in the beginning and 563.1 MB in the end (delta: 412.1 MB). Free memory was 125.6 MB in the beginning and 200.0 MB in the end (delta: -74.4 MB). Peak memory consumption was 338.7 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:34,618 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 122.0 MB in the beginning and 121.9 MB in the end (delta: 96.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 19:49:34,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:34,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.06 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:34,619 INFO L168 Benchmark]: Boogie Preprocessor took 42.97 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 110.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:34,619 INFO L168 Benchmark]: RCFGBuilder took 1079.85 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 110.6 MB in the end (delta: -15.9 kB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:34,620 INFO L168 Benchmark]: TraceAbstraction took 292909.83 ms. Allocated memory was 151.0 MB in the beginning and 563.1 MB in the end (delta: 412.1 MB). Free memory was 110.0 MB in the beginning and 204.2 MB in the end (delta: -94.2 MB). Peak memory consumption was 317.9 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:34,620 INFO L168 Benchmark]: Witness Printer took 67.02 ms. Allocated memory is still 563.1 MB. Free memory was 204.2 MB in the beginning and 200.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-10-13 19:49:34,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 122.0 MB in the beginning and 121.9 MB in the end (delta: 96.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 373.41 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.06 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.97 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 110.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1079.85 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 110.6 MB in the end (delta: -15.9 kB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 292909.83 ms. Allocated memory was 151.0 MB in the beginning and 563.1 MB in the end (delta: 412.1 MB). Free memory was 110.0 MB in the beginning and 204.2 MB in the end (delta: -94.2 MB). Peak memory consumption was 317.9 MB. Max. memory is 8.0 GB. * Witness Printer took 67.02 ms. Allocated memory is still 563.1 MB. Free memory was 204.2 MB in the beginning and 200.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9887.5ms, 177 PlacesBefore, 40 PlacesAfterwards, 183 TransitionsBefore, 37 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 8 FixpointIterations, 128 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 204 TotalNumberOfCompositions, 3168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1928, positive: 1802, positive conditional: 0, positive unconditional: 1802, negative: 126, negative conditional: 0, negative unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 837, positive: 813, positive conditional: 0, positive unconditional: 813, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 837, positive: 807, positive conditional: 0, positive unconditional: 807, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1928, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 837, unknown conditional: 0, unknown unconditional: 837] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 207 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 292754.8ms, OverallIterations: 62, TraceHistogramMax: 7, EmptinessCheckTime: 57.4ms, AutomataDifference: 167845.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9990.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 951 SDtfs, 4500 SDslu, 5695 SDs, 0 SdLazy, 28385 SolverSat, 2180 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 97733.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2197 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 1661 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12576 ImplicationChecksByTransitivity, 95754.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=776occurred in iteration=49, InterpolantAutomatonStates: 1042, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 734.5ms AutomataMinimizationTime, 62 MinimizatonAttempts, 5533 StatesRemovedByMinimization, 54 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 762.3ms SsaConstructionTime, 5608.1ms SatisfiabilityAnalysisTime, 73004.1ms InterpolantComputationTime, 1956 NumberOfCodeBlocks, 1929 NumberOfCodeBlocksAsserted, 165 NumberOfCheckSat, 1839 ConstructedInterpolants, 147 QuantifiedInterpolants, 54637 SizeOfPredicates, 478 NumberOfNonLiveVariables, 12954 ConjunctsInSsa, 1456 ConjunctsInUnsatCore, 117 InterpolantComputations, 16 PerfectInterpolantSequences, 477/1564 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 19:49:34,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...