/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-counter-determinism.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 14:58:44,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 14:58:44,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 14:58:44,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 14:58:44,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 14:58:44,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 14:58:44,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 14:58:44,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 14:58:44,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 14:58:44,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 14:58:44,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 14:58:44,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 14:58:44,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 14:58:44,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 14:58:44,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 14:58:44,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 14:58:44,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 14:58:44,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 14:58:44,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 14:58:44,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 14:58:44,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-07 14:58:44,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 14:58:44,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 14:58:44,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 14:58:44,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 14:58:44,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 14:58:44,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 14:58:44,424 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 14:58:44,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 14:58:44,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 14:58:44,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 14:58:44,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 14:58:44,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 14:58:44,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 14:58:44,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-07 14:58:44,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 14:58:44,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-07 14:58:44,427 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-07 14:58:44,427 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 14:58:44,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-07 14:58:44,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 14:58:44,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-07 14:58:44,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 14:58:44,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 14:58:44,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 14:58:44,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:44,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 14:58:44,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 14:58:44,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-07 14:58:44,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-07 14:58:44,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-07 14:58:44,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-07 14:58:44,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 14:58:44,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 14:58:44,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 14:58:44,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 14:58:44,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 14:58:44,848 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 14:58:44,849 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 14:58:44,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2021-10-07 14:58:44,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b346fd98e/b044b0b3778e4b4881f24232b8697b42/FLAGfa6dd7963 [2021-10-07 14:58:45,750 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 14:58:45,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2021-10-07 14:58:45,761 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b346fd98e/b044b0b3778e4b4881f24232b8697b42/FLAGfa6dd7963 [2021-10-07 14:58:46,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b346fd98e/b044b0b3778e4b4881f24232b8697b42 [2021-10-07 14:58:46,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 14:58:46,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-07 14:58:46,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:46,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 14:58:46,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 14:58:46,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7614ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46, skipping insertion in model container [2021-10-07 14:58:46,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 14:58:46,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 14:58:46,319 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-counter-determinism.wvr.c[2469,2482] [2021-10-07 14:58:46,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:46,332 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 14:58:46,362 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-counter-determinism.wvr.c[2469,2482] [2021-10-07 14:58:46,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 14:58:46,384 INFO L208 MainTranslator]: Completed translation [2021-10-07 14:58:46,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46 WrapperNode [2021-10-07 14:58:46,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 14:58:46,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:46,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 14:58:46,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 14:58:46,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 14:58:46,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 14:58:46,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 14:58:46,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 14:58:46,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 14:58:46,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 14:58:46,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 14:58:46,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 14:58:46,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (1/1) ... [2021-10-07 14:58:46,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 14:58:46,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:46,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 14:58:46,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 14:58:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 14:58:46,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 14:58:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 14:58:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 14:58:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 14:58:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 14:58:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-07 14:58:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-07 14:58:46,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-07 14:58:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 14:58:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-07 14:58:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 14:58:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 14:58:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 14:58:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 14:58:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-07 14:58:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 14:58:46,638 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 14:58:47,353 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 14:58:47,354 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-07 14:58:47,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:47 BoogieIcfgContainer [2021-10-07 14:58:47,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 14:58:47,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 14:58:47,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 14:58:47,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 14:58:47,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:58:46" (1/3) ... [2021-10-07 14:58:47,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0a5b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:47, skipping insertion in model container [2021-10-07 14:58:47,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:58:46" (2/3) ... [2021-10-07 14:58:47,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0a5b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:58:47, skipping insertion in model container [2021-10-07 14:58:47,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:58:47" (3/3) ... [2021-10-07 14:58:47,384 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2021-10-07 14:58:47,391 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-07 14:58:47,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 14:58:47,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-07 14:58:47,392 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 14:58:47,444 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,445 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,445 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,446 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,446 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,446 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,446 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,447 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,448 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,449 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,449 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,452 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,452 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,453 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,453 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,454 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,454 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,454 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,454 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,456 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,456 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,456 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,456 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,456 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,457 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,457 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,459 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,459 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,460 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,460 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,461 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,462 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,464 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,464 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,464 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,465 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,465 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,465 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,465 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,468 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,472 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,473 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,474 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,474 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,475 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,475 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,475 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,476 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,476 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,476 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,477 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,477 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,477 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,477 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,478 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,478 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,478 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,478 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,478 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,479 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,479 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,479 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,479 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,480 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,480 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,480 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,480 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,480 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,480 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,481 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,481 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,481 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,481 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,482 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,482 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,482 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,482 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,483 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,483 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,484 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,484 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,484 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,484 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,485 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,485 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,485 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,485 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,485 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,486 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,486 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,490 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,490 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,491 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,491 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,491 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,495 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,495 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,497 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,497 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,498 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,498 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,498 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,498 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,498 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,501 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,502 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,502 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 14:58:47,516 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-07 14:58:47,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 14:58:47,587 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 14:58:47,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2021-10-07 14:58:47,610 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 14:58:47,625 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 141 transitions, 314 flow [2021-10-07 14:58:47,629 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 141 transitions, 314 flow [2021-10-07 14:58:47,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 141 transitions, 314 flow [2021-10-07 14:58:47,738 INFO L129 PetriNetUnfolder]: 9/137 cut-off events. [2021-10-07 14:58:47,738 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-07 14:58:47,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 9/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2021-10-07 14:58:47,757 INFO L116 LiptonReduction]: Number of co-enabled transitions 5184 [2021-10-07 14:58:52,882 INFO L131 LiptonReduction]: Checked pairs total: 6285 [2021-10-07 14:58:52,883 INFO L133 LiptonReduction]: Total number of compositions: 122 [2021-10-07 14:58:52,893 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 49 transitions, 130 flow [2021-10-07 14:58:53,228 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6392 states, 5768 states have (on average 4.805131761442441) internal successors, (27716), 6391 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:53,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 6392 states, 5768 states have (on average 4.805131761442441) internal successors, (27716), 6391 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:58:53,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:53,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 14:58:53,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:53,295 INFO L82 PathProgramCache]: Analyzing trace with hash 18893465, now seen corresponding path program 1 times [2021-10-07 14:58:53,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:53,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278696628] [2021-10-07 14:58:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:53,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:53,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:53,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278696628] [2021-10-07 14:58:53,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278696628] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:53,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:53,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:58:53,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159851146] [2021-10-07 14:58:53,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:53,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:53,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:53,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:53,702 INFO L87 Difference]: Start difference. First operand has 6392 states, 5768 states have (on average 4.805131761442441) internal successors, (27716), 6391 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 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) [2021-10-07 14:58:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:54,038 INFO L93 Difference]: Finished difference Result 7808 states and 33616 transitions. [2021-10-07 14:58:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:54,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 14:58:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:54,199 INFO L225 Difference]: With dead ends: 7808 [2021-10-07 14:58:54,200 INFO L226 Difference]: Without dead ends: 7808 [2021-10-07 14:58:54,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7808 states. [2021-10-07 14:58:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7808 to 5410. [2021-10-07 14:58:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5011 states have (on average 5.033526242267013) internal successors, (25223), 5409 states have internal predecessors, (25223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 25223 transitions. [2021-10-07 14:58:54,883 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 25223 transitions. Word has length 4 [2021-10-07 14:58:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:54,884 INFO L470 AbstractCegarLoop]: Abstraction has 5410 states and 25223 transitions. [2021-10-07 14:58:54,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 25223 transitions. [2021-10-07 14:58:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:58:54,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:54,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 14:58:54,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-07 14:58:54,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash 18893359, now seen corresponding path program 1 times [2021-10-07 14:58:54,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:54,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956835405] [2021-10-07 14:58:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:54,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:54,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:54,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956835405] [2021-10-07 14:58:54,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956835405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:54,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:54,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:54,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87451] [2021-10-07 14:58:54,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:54,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:54,959 INFO L87 Difference]: Start difference. First operand 5410 states and 25223 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:55,069 INFO L93 Difference]: Finished difference Result 4808 states and 21977 transitions. [2021-10-07 14:58:55,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:55,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 14:58:55,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:55,134 INFO L225 Difference]: With dead ends: 4808 [2021-10-07 14:58:55,134 INFO L226 Difference]: Without dead ends: 4808 [2021-10-07 14:58:55,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2021-10-07 14:58:55,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4808. [2021-10-07 14:58:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4808 states, 4489 states have (on average 4.8957451548229) internal successors, (21977), 4807 states have internal predecessors, (21977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4808 states to 4808 states and 21977 transitions. [2021-10-07 14:58:55,558 INFO L78 Accepts]: Start accepts. Automaton has 4808 states and 21977 transitions. Word has length 4 [2021-10-07 14:58:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:55,561 INFO L470 AbstractCegarLoop]: Abstraction has 4808 states and 21977 transitions. [2021-10-07 14:58:55,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4808 states and 21977 transitions. [2021-10-07 14:58:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 14:58:55,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:55,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 14:58:55,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-07 14:58:55,566 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:55,567 INFO L82 PathProgramCache]: Analyzing trace with hash 18893361, now seen corresponding path program 1 times [2021-10-07 14:58:55,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:55,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140013033] [2021-10-07 14:58:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:55,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:55,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:55,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140013033] [2021-10-07 14:58:55,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140013033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:55,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:58:55,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:58:55,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468606482] [2021-10-07 14:58:55,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:58:55,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:58:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:55,602 INFO L87 Difference]: Start difference. First operand 4808 states and 21977 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:55,705 INFO L93 Difference]: Finished difference Result 4850 states and 20332 transitions. [2021-10-07 14:58:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:58:55,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-07 14:58:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:55,746 INFO L225 Difference]: With dead ends: 4850 [2021-10-07 14:58:55,746 INFO L226 Difference]: Without dead ends: 4842 [2021-10-07 14:58:55,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:58:55,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2021-10-07 14:58:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4570. [2021-10-07 14:58:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4570 states, 4251 states have (on average 4.60009409550694) internal successors, (19555), 4569 states have internal predecessors, (19555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 19555 transitions. [2021-10-07 14:58:56,099 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 19555 transitions. Word has length 4 [2021-10-07 14:58:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:56,100 INFO L470 AbstractCegarLoop]: Abstraction has 4570 states and 19555 transitions. [2021-10-07 14:58:56,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 19555 transitions. [2021-10-07 14:58:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:58:56,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:56,101 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:58:56,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-07 14:58:56,102 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash 585697961, now seen corresponding path program 1 times [2021-10-07 14:58:56,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:56,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514981757] [2021-10-07 14:58:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:56,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:56,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:56,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514981757] [2021-10-07 14:58:56,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514981757] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:56,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037232763] [2021-10-07 14:58:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:56,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:56,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:56,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:58:56,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-07 14:58:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:56,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:58:56,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:56,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037232763] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:58:56,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:58:56,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-07 14:58:56,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210963238] [2021-10-07 14:58:56,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:56,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:56,290 INFO L87 Difference]: Start difference. First operand 4570 states and 19555 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) [2021-10-07 14:58:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:56,515 INFO L93 Difference]: Finished difference Result 4240 states and 17658 transitions. [2021-10-07 14:58:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:56,518 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 [2021-10-07 14:58:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:56,569 INFO L225 Difference]: With dead ends: 4240 [2021-10-07 14:58:56,569 INFO L226 Difference]: Without dead ends: 4240 [2021-10-07 14:58:56,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2021-10-07 14:58:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 3968. [2021-10-07 14:58:56,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3729 states have (on average 4.534995977473853) internal successors, (16911), 3967 states have internal predecessors, (16911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 16911 transitions. [2021-10-07 14:58:56,774 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 16911 transitions. Word has length 5 [2021-10-07 14:58:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:56,775 INFO L470 AbstractCegarLoop]: Abstraction has 3968 states and 16911 transitions. [2021-10-07 14:58:56,775 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) [2021-10-07 14:58:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 16911 transitions. [2021-10-07 14:58:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:58:56,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:56,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:58:56,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-07 14:58:56,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:56,990 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:56,991 INFO L82 PathProgramCache]: Analyzing trace with hash 585697857, now seen corresponding path program 1 times [2021-10-07 14:58:56,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:56,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363329287] [2021-10-07 14:58:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:56,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:57,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:57,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363329287] [2021-10-07 14:58:57,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363329287] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:57,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879830857] [2021-10-07 14:58:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:57,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:57,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:57,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:58:57,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-07 14:58:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:57,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:58:57,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:57,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879830857] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:57,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:57,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-07 14:58:57,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225824546] [2021-10-07 14:58:57,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:58:57,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:57,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:58:57,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:58:57,133 INFO L87 Difference]: Start difference. First operand 3968 states and 16911 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:57,371 INFO L93 Difference]: Finished difference Result 7504 states and 30831 transitions. [2021-10-07 14:58:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 14:58:57,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:57,434 INFO L225 Difference]: With dead ends: 7504 [2021-10-07 14:58:57,434 INFO L226 Difference]: Without dead ends: 7500 [2021-10-07 14:58:57,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 14:58:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2021-10-07 14:58:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 5440. [2021-10-07 14:58:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5440 states, 5201 states have (on average 4.855027879253989) internal successors, (25251), 5439 states have internal predecessors, (25251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5440 states to 5440 states and 25251 transitions. [2021-10-07 14:58:57,850 INFO L78 Accepts]: Start accepts. Automaton has 5440 states and 25251 transitions. Word has length 5 [2021-10-07 14:58:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:57,851 INFO L470 AbstractCegarLoop]: Abstraction has 5440 states and 25251 transitions. [2021-10-07 14:58:57,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5440 states and 25251 transitions. [2021-10-07 14:58:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 14:58:57,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:57,852 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 14:58:57,893 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 [2021-10-07 14:58:58,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:58,066 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:58,066 INFO L82 PathProgramCache]: Analyzing trace with hash 585697927, now seen corresponding path program 1 times [2021-10-07 14:58:58,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:58,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179661881] [2021-10-07 14:58:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:58,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:58,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:58,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179661881] [2021-10-07 14:58:58,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179661881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:58,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955142569] [2021-10-07 14:58:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:58,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:58,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:58,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:58:58,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-07 14:58:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:58,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:58:58,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:58,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955142569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:58,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:58,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 14:58:58,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184480693] [2021-10-07 14:58:58,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:58:58,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:58,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:58:58,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:58,217 INFO L87 Difference]: Start difference. First operand 5440 states and 25251 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:58,343 INFO L93 Difference]: Finished difference Result 7496 states and 33303 transitions. [2021-10-07 14:58:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:58:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 14:58:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:58,408 INFO L225 Difference]: With dead ends: 7496 [2021-10-07 14:58:58,409 INFO L226 Difference]: Without dead ends: 7496 [2021-10-07 14:58:58,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:58,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2021-10-07 14:58:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 6040. [2021-10-07 14:58:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6040 states, 5801 states have (on average 4.875538700224099) internal successors, (28283), 6039 states have internal predecessors, (28283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6040 states to 6040 states and 28283 transitions. [2021-10-07 14:58:58,960 INFO L78 Accepts]: Start accepts. Automaton has 6040 states and 28283 transitions. Word has length 5 [2021-10-07 14:58:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:58:58,961 INFO L470 AbstractCegarLoop]: Abstraction has 6040 states and 28283 transitions. [2021-10-07 14:58:58,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6040 states and 28283 transitions. [2021-10-07 14:58:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:58:58,962 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:58:58,962 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-07 14:58:59,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-07 14:58:59,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:59,176 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:58:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:58:59,178 INFO L82 PathProgramCache]: Analyzing trace with hash 976768049, now seen corresponding path program 2 times [2021-10-07 14:58:59,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:58:59,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163644132] [2021-10-07 14:58:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:58:59,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:58:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:58:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:59,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:58:59,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163644132] [2021-10-07 14:58:59,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163644132] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:59,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142387316] [2021-10-07 14:58:59,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:58:59,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:58:59,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:58:59,254 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:58:59,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-07 14:58:59,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:58:59,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:58:59,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:58:59,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:58:59,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:58:59,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142387316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:58:59,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:58:59,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-07 14:58:59,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250017251] [2021-10-07 14:58:59,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:58:59,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:58:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:58:59,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:59,463 INFO L87 Difference]: Start difference. First operand 6040 states and 28283 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:58:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:58:59,654 INFO L93 Difference]: Finished difference Result 11200 states and 49076 transitions. [2021-10-07 14:58:59,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:58:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 14:58:59,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:58:59,762 INFO L225 Difference]: With dead ends: 11200 [2021-10-07 14:58:59,762 INFO L226 Difference]: Without dead ends: 11196 [2021-10-07 14:58:59,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:58:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11196 states. [2021-10-07 14:59:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11196 to 7012. [2021-10-07 14:59:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7012 states, 6773 states have (on average 5.024509080171268) internal successors, (34031), 7011 states have internal predecessors, (34031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7012 states to 7012 states and 34031 transitions. [2021-10-07 14:59:00,318 INFO L78 Accepts]: Start accepts. Automaton has 7012 states and 34031 transitions. Word has length 6 [2021-10-07 14:59:00,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:00,319 INFO L470 AbstractCegarLoop]: Abstraction has 7012 states and 34031 transitions. [2021-10-07 14:59:00,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7012 states and 34031 transitions. [2021-10-07 14:59:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 14:59:00,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:00,320 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-07 14:59:00,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:00,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:00,534 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:00,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash 976768119, now seen corresponding path program 2 times [2021-10-07 14:59:00,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:00,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115510326] [2021-10-07 14:59:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:00,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:00,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:00,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115510326] [2021-10-07 14:59:00,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115510326] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:00,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112896206] [2021-10-07 14:59:00,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:00,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:00,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:00,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:00,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 14:59:00,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 14:59:00,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:00,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:59:00,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 14:59:00,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112896206] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:00,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:00,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2021-10-07 14:59:00,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840975611] [2021-10-07 14:59:00,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:00,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:59:00,689 INFO L87 Difference]: Start difference. First operand 7012 states and 34031 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:00,770 INFO L93 Difference]: Finished difference Result 3918 states and 17853 transitions. [2021-10-07 14:59:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:00,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 14:59:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:00,963 INFO L225 Difference]: With dead ends: 3918 [2021-10-07 14:59:00,964 INFO L226 Difference]: Without dead ends: 3918 [2021-10-07 14:59:00,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:59:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-10-07 14:59:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3400. [2021-10-07 14:59:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3329 states have (on average 4.57344547912286) internal successors, (15225), 3399 states have internal predecessors, (15225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 15225 transitions. [2021-10-07 14:59:01,109 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 15225 transitions. Word has length 6 [2021-10-07 14:59:01,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:01,110 INFO L470 AbstractCegarLoop]: Abstraction has 3400 states and 15225 transitions. [2021-10-07 14:59:01,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 15225 transitions. [2021-10-07 14:59:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 14:59:01,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:01,113 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-07 14:59:01,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:01,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:01,329 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:01,330 INFO L82 PathProgramCache]: Analyzing trace with hash 215042113, now seen corresponding path program 3 times [2021-10-07 14:59:01,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:01,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578311542] [2021-10-07 14:59:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:01,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:01,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:01,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578311542] [2021-10-07 14:59:01,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578311542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:01,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424931123] [2021-10-07 14:59:01,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:01,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:01,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:01,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-07 14:59:01,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 14:59:01,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:01,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:59:01,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:01,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424931123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:01,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:01,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-07 14:59:01,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286918647] [2021-10-07 14:59:01,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:59:01,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:01,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:59:01,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:59:01,467 INFO L87 Difference]: Start difference. First operand 3400 states and 15225 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:01,696 INFO L93 Difference]: Finished difference Result 6356 states and 27053 transitions. [2021-10-07 14:59:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:59:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 14:59:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:01,749 INFO L225 Difference]: With dead ends: 6356 [2021-10-07 14:59:01,749 INFO L226 Difference]: Without dead ends: 6352 [2021-10-07 14:59:01,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:59:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6352 states. [2021-10-07 14:59:01,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6352 to 3968. [2021-10-07 14:59:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3897 states have (on average 4.636130356684629) internal successors, (18067), 3967 states have internal predecessors, (18067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 18067 transitions. [2021-10-07 14:59:02,013 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 18067 transitions. Word has length 7 [2021-10-07 14:59:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:02,013 INFO L470 AbstractCegarLoop]: Abstraction has 3968 states and 18067 transitions. [2021-10-07 14:59:02,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 18067 transitions. [2021-10-07 14:59:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:59:02,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:02,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:02,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:02,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:02,230 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:02,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:02,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1350828223, now seen corresponding path program 1 times [2021-10-07 14:59:02,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:02,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445156866] [2021-10-07 14:59:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:02,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:02,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:02,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445156866] [2021-10-07 14:59:02,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445156866] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:02,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:02,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:02,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845776217] [2021-10-07 14:59:02,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:02,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:02,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:02,261 INFO L87 Difference]: Start difference. First operand 3968 states and 18067 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:02,329 INFO L93 Difference]: Finished difference Result 6000 states and 27307 transitions. [2021-10-07 14:59:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:02,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:59:02,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:02,518 INFO L225 Difference]: With dead ends: 6000 [2021-10-07 14:59:02,518 INFO L226 Difference]: Without dead ends: 5992 [2021-10-07 14:59:02,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:02,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5992 states. [2021-10-07 14:59:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 4940. [2021-10-07 14:59:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4940 states, 4869 states have (on average 4.821729307866091) internal successors, (23477), 4939 states have internal predecessors, (23477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4940 states to 4940 states and 23477 transitions. [2021-10-07 14:59:02,743 INFO L78 Accepts]: Start accepts. Automaton has 4940 states and 23477 transitions. Word has length 8 [2021-10-07 14:59:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:02,743 INFO L470 AbstractCegarLoop]: Abstraction has 4940 states and 23477 transitions. [2021-10-07 14:59:02,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4940 states and 23477 transitions. [2021-10-07 14:59:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:59:02,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:02,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:02,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-07 14:59:02,745 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1285591195, now seen corresponding path program 1 times [2021-10-07 14:59:02,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:02,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063606414] [2021-10-07 14:59:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:02,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:02,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:02,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063606414] [2021-10-07 14:59:02,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063606414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:02,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:02,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:02,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681153393] [2021-10-07 14:59:02,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:02,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:02,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:02,774 INFO L87 Difference]: Start difference. First operand 4940 states and 23477 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:03,057 INFO L93 Difference]: Finished difference Result 8142 states and 38816 transitions. [2021-10-07 14:59:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:03,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:59:03,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:03,121 INFO L225 Difference]: With dead ends: 8142 [2021-10-07 14:59:03,122 INFO L226 Difference]: Without dead ends: 8142 [2021-10-07 14:59:03,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2021-10-07 14:59:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 5744. [2021-10-07 14:59:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5744 states, 5673 states have (on average 5.240789705623127) internal successors, (29731), 5743 states have internal predecessors, (29731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5744 states to 5744 states and 29731 transitions. [2021-10-07 14:59:03,406 INFO L78 Accepts]: Start accepts. Automaton has 5744 states and 29731 transitions. Word has length 8 [2021-10-07 14:59:03,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:03,406 INFO L470 AbstractCegarLoop]: Abstraction has 5744 states and 29731 transitions. [2021-10-07 14:59:03,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5744 states and 29731 transitions. [2021-10-07 14:59:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:59:03,408 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:03,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:03,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-07 14:59:03,507 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1285591248, now seen corresponding path program 1 times [2021-10-07 14:59:03,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:03,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060841074] [2021-10-07 14:59:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:03,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:03,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:03,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060841074] [2021-10-07 14:59:03,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060841074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:03,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:03,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-07 14:59:03,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437463245] [2021-10-07 14:59:03,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:03,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:03,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:03,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:03,536 INFO L87 Difference]: Start difference. First operand 5744 states and 29731 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:03,618 INFO L93 Difference]: Finished difference Result 5690 states and 26578 transitions. [2021-10-07 14:59:03,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:03,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:59:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:03,656 INFO L225 Difference]: With dead ends: 5690 [2021-10-07 14:59:03,657 INFO L226 Difference]: Without dead ends: 5632 [2021-10-07 14:59:03,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2021-10-07 14:59:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 5514. [2021-10-07 14:59:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5443 states have (on average 4.767775124012493) internal successors, (25951), 5513 states have internal predecessors, (25951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 25951 transitions. [2021-10-07 14:59:03,905 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 25951 transitions. Word has length 8 [2021-10-07 14:59:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:03,905 INFO L470 AbstractCegarLoop]: Abstraction has 5514 states and 25951 transitions. [2021-10-07 14:59:03,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 25951 transitions. [2021-10-07 14:59:03,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 14:59:03,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:03,907 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-07 14:59:03,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-07 14:59:03,907 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:03,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1923625423, now seen corresponding path program 4 times [2021-10-07 14:59:03,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:03,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609386845] [2021-10-07 14:59:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:03,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:03,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:03,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609386845] [2021-10-07 14:59:03,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609386845] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:03,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842920044] [2021-10-07 14:59:03,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:03,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:03,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:03,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:03,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-07 14:59:04,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:04,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:04,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 14:59:04,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:04,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842920044] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:04,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:04,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-07 14:59:04,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581662086] [2021-10-07 14:59:04,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 14:59:04,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 14:59:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:59:04,053 INFO L87 Difference]: Start difference. First operand 5514 states and 25951 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:04,298 INFO L93 Difference]: Finished difference Result 9766 states and 43220 transitions. [2021-10-07 14:59:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:59:04,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 14:59:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:04,368 INFO L225 Difference]: With dead ends: 9766 [2021-10-07 14:59:04,368 INFO L226 Difference]: Without dead ends: 9752 [2021-10-07 14:59:04,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:59:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9752 states. [2021-10-07 14:59:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9752 to 6388. [2021-10-07 14:59:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6388 states, 6317 states have (on average 4.801488048124109) internal successors, (30331), 6387 states have internal predecessors, (30331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 30331 transitions. [2021-10-07 14:59:04,789 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 30331 transitions. Word has length 8 [2021-10-07 14:59:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:04,789 INFO L470 AbstractCegarLoop]: Abstraction has 6388 states and 30331 transitions. [2021-10-07 14:59:04,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 30331 transitions. [2021-10-07 14:59:04,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:59:04,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:04,791 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:04,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:05,005 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,SelfDestructingSolverStorable12 [2021-10-07 14:59:05,006 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:05,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1198620709, now seen corresponding path program 1 times [2021-10-07 14:59:05,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:05,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178530782] [2021-10-07 14:59:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:05,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:05,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:05,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178530782] [2021-10-07 14:59:05,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178530782] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:05,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:05,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:05,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352570390] [2021-10-07 14:59:05,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:05,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:05,034 INFO L87 Difference]: Start difference. First operand 6388 states and 30331 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:05,106 INFO L93 Difference]: Finished difference Result 5458 states and 25821 transitions. [2021-10-07 14:59:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:05,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:59:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:05,135 INFO L225 Difference]: With dead ends: 5458 [2021-10-07 14:59:05,136 INFO L226 Difference]: Without dead ends: 5458 [2021-10-07 14:59:05,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5458 states. [2021-10-07 14:59:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5458 to 5458. [2021-10-07 14:59:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5405 states have (on average 4.777243293246993) internal successors, (25821), 5457 states have internal predecessors, (25821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 25821 transitions. [2021-10-07 14:59:05,407 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 25821 transitions. Word has length 9 [2021-10-07 14:59:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:05,407 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 25821 transitions. [2021-10-07 14:59:05,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 25821 transitions. [2021-10-07 14:59:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:59:05,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:05,409 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:05,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-07 14:59:05,409 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1198620762, now seen corresponding path program 1 times [2021-10-07 14:59:05,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:05,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957947690] [2021-10-07 14:59:05,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:05,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:05,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:05,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957947690] [2021-10-07 14:59:05,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957947690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:05,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:05,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:05,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431856422] [2021-10-07 14:59:05,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:05,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:05,445 INFO L87 Difference]: Start difference. First operand 5458 states and 25821 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:05,512 INFO L93 Difference]: Finished difference Result 4528 states and 21311 transitions. [2021-10-07 14:59:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:05,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:59:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:05,533 INFO L225 Difference]: With dead ends: 4528 [2021-10-07 14:59:05,533 INFO L226 Difference]: Without dead ends: 4528 [2021-10-07 14:59:05,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:05,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2021-10-07 14:59:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 4528. [2021-10-07 14:59:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4528 states, 4493 states have (on average 4.743156020476296) internal successors, (21311), 4527 states have internal predecessors, (21311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 21311 transitions. [2021-10-07 14:59:05,708 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 21311 transitions. Word has length 9 [2021-10-07 14:59:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:05,708 INFO L470 AbstractCegarLoop]: Abstraction has 4528 states and 21311 transitions. [2021-10-07 14:59:05,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 21311 transitions. [2021-10-07 14:59:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:59:05,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:05,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:05,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-07 14:59:05,709 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:05,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1198620761, now seen corresponding path program 1 times [2021-10-07 14:59:05,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:05,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701941066] [2021-10-07 14:59:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:05,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:05,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:05,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701941066] [2021-10-07 14:59:05,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701941066] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:05,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098119234] [2021-10-07 14:59:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:05,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:05,742 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:05,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-07 14:59:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:59:05,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:05,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098119234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:05,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:05,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 3 [2021-10-07 14:59:05,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865881456] [2021-10-07 14:59:05,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 14:59:05,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 14:59:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:59:05,851 INFO L87 Difference]: Start difference. First operand 4528 states and 21311 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:05,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:05,986 INFO L93 Difference]: Finished difference Result 7002 states and 32589 transitions. [2021-10-07 14:59:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:59:05,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:59:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:06,076 INFO L225 Difference]: With dead ends: 7002 [2021-10-07 14:59:06,077 INFO L226 Difference]: Without dead ends: 6978 [2021-10-07 14:59:06,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:59:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2021-10-07 14:59:06,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 5906. [2021-10-07 14:59:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5906 states, 5871 states have (on average 4.8610117526826775) internal successors, (28539), 5905 states have internal predecessors, (28539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 28539 transitions. [2021-10-07 14:59:06,373 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 28539 transitions. Word has length 9 [2021-10-07 14:59:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:06,374 INFO L470 AbstractCegarLoop]: Abstraction has 5906 states and 28539 transitions. [2021-10-07 14:59:06,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 28539 transitions. [2021-10-07 14:59:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 14:59:06,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:06,375 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2021-10-07 14:59:06,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:06,579 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,SelfDestructingSolverStorable15 [2021-10-07 14:59:06,580 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash 497157697, now seen corresponding path program 5 times [2021-10-07 14:59:06,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:06,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693396282] [2021-10-07 14:59:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:06,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:06,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:06,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693396282] [2021-10-07 14:59:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693396282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:06,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117150477] [2021-10-07 14:59:06,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:06,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:06,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:06,638 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:06,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-07 14:59:06,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 14:59:06,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:06,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:59:06,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:06,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117150477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:06,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:06,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-07 14:59:06,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135162853] [2021-10-07 14:59:06,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:59:06,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:06,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:59:06,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:59:06,768 INFO L87 Difference]: Start difference. First operand 5906 states and 28539 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:06,950 INFO L93 Difference]: Finished difference Result 10542 states and 47731 transitions. [2021-10-07 14:59:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:59:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 14:59:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:07,025 INFO L225 Difference]: With dead ends: 10542 [2021-10-07 14:59:07,025 INFO L226 Difference]: Without dead ends: 10528 [2021-10-07 14:59:07,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:59:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10528 states. [2021-10-07 14:59:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10528 to 6714. [2021-10-07 14:59:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 6679 states have (on average 4.890702200928283) internal successors, (32665), 6713 states have internal predecessors, (32665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 32665 transitions. [2021-10-07 14:59:07,344 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 32665 transitions. Word has length 9 [2021-10-07 14:59:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:07,345 INFO L470 AbstractCegarLoop]: Abstraction has 6714 states and 32665 transitions. [2021-10-07 14:59:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 32665 transitions. [2021-10-07 14:59:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:59:07,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:07,346 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:07,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:07,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:07,549 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash -959017941, now seen corresponding path program 1 times [2021-10-07 14:59:07,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:07,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238570242] [2021-10-07 14:59:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:07,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:07,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:07,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238570242] [2021-10-07 14:59:07,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238570242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:07,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:07,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:07,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528099850] [2021-10-07 14:59:07,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:07,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:07,579 INFO L87 Difference]: Start difference. First operand 6714 states and 32665 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:07,660 INFO L93 Difference]: Finished difference Result 5952 states and 28225 transitions. [2021-10-07 14:59:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:07,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:59:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:07,700 INFO L225 Difference]: With dead ends: 5952 [2021-10-07 14:59:07,700 INFO L226 Difference]: Without dead ends: 5770 [2021-10-07 14:59:07,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2021-10-07 14:59:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 4388. [2021-10-07 14:59:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4365 states have (on average 4.505154639175258) internal successors, (19665), 4387 states have internal predecessors, (19665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 19665 transitions. [2021-10-07 14:59:07,916 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 19665 transitions. Word has length 10 [2021-10-07 14:59:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:07,916 INFO L470 AbstractCegarLoop]: Abstraction has 4388 states and 19665 transitions. [2021-10-07 14:59:07,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 19665 transitions. [2021-10-07 14:59:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:59:07,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:07,918 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:07,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-07 14:59:07,918 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:07,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1497464305, now seen corresponding path program 2 times [2021-10-07 14:59:07,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:07,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672356541] [2021-10-07 14:59:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:07,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:07,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:07,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672356541] [2021-10-07 14:59:07,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672356541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:07,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519347214] [2021-10-07 14:59:07,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:07,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:07,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:07,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:07,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-07 14:59:08,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:08,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:08,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 14:59:08,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:08,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519347214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:08,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:08,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2021-10-07 14:59:08,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141336602] [2021-10-07 14:59:08,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 14:59:08,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:08,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 14:59:08,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:59:08,109 INFO L87 Difference]: Start difference. First operand 4388 states and 19665 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:08,246 INFO L93 Difference]: Finished difference Result 6900 states and 30512 transitions. [2021-10-07 14:59:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 14:59:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:59:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:08,302 INFO L225 Difference]: With dead ends: 6900 [2021-10-07 14:59:08,303 INFO L226 Difference]: Without dead ends: 6844 [2021-10-07 14:59:08,303 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 14:59:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6844 states. [2021-10-07 14:59:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6844 to 5316. [2021-10-07 14:59:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5293 states have (on average 4.576043831475534) internal successors, (24221), 5315 states have internal predecessors, (24221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 24221 transitions. [2021-10-07 14:59:08,582 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 24221 transitions. Word has length 10 [2021-10-07 14:59:08,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:08,583 INFO L470 AbstractCegarLoop]: Abstraction has 5316 states and 24221 transitions. [2021-10-07 14:59:08,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:08,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 24221 transitions. [2021-10-07 14:59:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 14:59:08,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:08,584 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2021-10-07 14:59:08,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:08,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:08,799 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:08,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1767976911, now seen corresponding path program 6 times [2021-10-07 14:59:08,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:08,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389933672] [2021-10-07 14:59:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:08,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:08,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:08,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389933672] [2021-10-07 14:59:08,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389933672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:08,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078925914] [2021-10-07 14:59:08,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:59:08,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:08,866 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:08,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-07 14:59:08,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 14:59:08,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:08,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 14:59:08,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:08,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078925914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:08,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:08,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-07 14:59:08,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785040391] [2021-10-07 14:59:08,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:59:08,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:08,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:59:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:59:08,992 INFO L87 Difference]: Start difference. First operand 5316 states and 24221 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:09,138 INFO L93 Difference]: Finished difference Result 9696 states and 42276 transitions. [2021-10-07 14:59:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:59:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 14:59:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:09,189 INFO L225 Difference]: With dead ends: 9696 [2021-10-07 14:59:09,189 INFO L226 Difference]: Without dead ends: 9584 [2021-10-07 14:59:09,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.4ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:59:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9584 states. [2021-10-07 14:59:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9584 to 5906. [2021-10-07 14:59:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5906 states, 5883 states have (on average 4.5937446880843105) internal successors, (27025), 5905 states have internal predecessors, (27025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:09,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 27025 transitions. [2021-10-07 14:59:09,395 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 27025 transitions. Word has length 10 [2021-10-07 14:59:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:09,395 INFO L470 AbstractCegarLoop]: Abstraction has 5906 states and 27025 transitions. [2021-10-07 14:59:09,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 27025 transitions. [2021-10-07 14:59:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:59:09,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:09,397 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:09,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-07 14:59:09,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:09,598 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:09,600 INFO L82 PathProgramCache]: Analyzing trace with hash -823244569, now seen corresponding path program 3 times [2021-10-07 14:59:09,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:09,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264488253] [2021-10-07 14:59:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:09,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:09,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:09,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264488253] [2021-10-07 14:59:09,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264488253] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:09,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504805767] [2021-10-07 14:59:09,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:09,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:09,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:09,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-07 14:59:09,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 14:59:09,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 14:59:09,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:09,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504805767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:09,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:09,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-07 14:59:09,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681233866] [2021-10-07 14:59:09,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 14:59:09,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:09,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 14:59:09,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:59:09,791 INFO L87 Difference]: Start difference. First operand 5906 states and 27025 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2021-10-07 14:59:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:09,959 INFO L93 Difference]: Finished difference Result 9464 states and 42637 transitions. [2021-10-07 14:59:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 14:59:09,960 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 11 [2021-10-07 14:59:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:10,027 INFO L225 Difference]: With dead ends: 9464 [2021-10-07 14:59:10,027 INFO L226 Difference]: Without dead ends: 9400 [2021-10-07 14:59:10,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-07 14:59:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2021-10-07 14:59:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 6938. [2021-10-07 14:59:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6938 states, 6915 states have (on average 4.643673174258858) internal successors, (32111), 6937 states have internal predecessors, (32111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 32111 transitions. [2021-10-07 14:59:10,298 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 32111 transitions. Word has length 11 [2021-10-07 14:59:10,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 6938 states and 32111 transitions. [2021-10-07 14:59:10,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2021-10-07 14:59:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 32111 transitions. [2021-10-07 14:59:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 14:59:10,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:10,301 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1] [2021-10-07 14:59:10,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-07 14:59:10,511 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,SelfDestructingSolverStorable20 [2021-10-07 14:59:10,512 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:10,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:10,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1027294273, now seen corresponding path program 7 times [2021-10-07 14:59:10,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:10,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403586058] [2021-10-07 14:59:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:10,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:10,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:10,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403586058] [2021-10-07 14:59:10,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403586058] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:10,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257555483] [2021-10-07 14:59:10,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:59:10,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:10,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:10,598 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:10,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-07 14:59:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:10,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:59:10,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:10,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257555483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:10,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:10,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-07 14:59:10,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281790152] [2021-10-07 14:59:10,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:59:10,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:10,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:59:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:59:10,734 INFO L87 Difference]: Start difference. First operand 6938 states and 32111 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2021-10-07 14:59:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:10,941 INFO L93 Difference]: Finished difference Result 12782 states and 56513 transitions. [2021-10-07 14:59:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:59:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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 [2021-10-07 14:59:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:11,002 INFO L225 Difference]: With dead ends: 12782 [2021-10-07 14:59:11,002 INFO L226 Difference]: Without dead ends: 12656 [2021-10-07 14:59:11,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.3ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:59:11,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12656 states. [2021-10-07 14:59:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12656 to 7632. [2021-10-07 14:59:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7632 states, 7609 states have (on average 4.658299382310422) internal successors, (35445), 7631 states have internal predecessors, (35445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 35445 transitions. [2021-10-07 14:59:11,307 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 35445 transitions. Word has length 11 [2021-10-07 14:59:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:11,308 INFO L470 AbstractCegarLoop]: Abstraction has 7632 states and 35445 transitions. [2021-10-07 14:59:11,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2021-10-07 14:59:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 35445 transitions. [2021-10-07 14:59:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:59:11,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:11,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:11,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:11,523 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,SelfDestructingSolverStorable21 [2021-10-07 14:59:11,524 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:11,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:11,525 INFO L82 PathProgramCache]: Analyzing trace with hash 330701464, now seen corresponding path program 1 times [2021-10-07 14:59:11,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:11,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932283409] [2021-10-07 14:59:11,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:11,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:11,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:11,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932283409] [2021-10-07 14:59:11,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932283409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:11,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-07 14:59:11,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-07 14:59:11,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219274956] [2021-10-07 14:59:11,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 14:59:11,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:11,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 14:59:11,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:11,562 INFO L87 Difference]: Start difference. First operand 7632 states and 35445 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:11,708 INFO L93 Difference]: Finished difference Result 10694 states and 49858 transitions. [2021-10-07 14:59:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 14:59:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:59:11,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:11,766 INFO L225 Difference]: With dead ends: 10694 [2021-10-07 14:59:11,766 INFO L226 Difference]: Without dead ends: 10516 [2021-10-07 14:59:11,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 14:59:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10516 states. [2021-10-07 14:59:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10516 to 8982. [2021-10-07 14:59:12,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8982 states, 8959 states have (on average 4.827212858577966) internal successors, (43247), 8981 states have internal predecessors, (43247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8982 states to 8982 states and 43247 transitions. [2021-10-07 14:59:12,093 INFO L78 Accepts]: Start accepts. Automaton has 8982 states and 43247 transitions. Word has length 12 [2021-10-07 14:59:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:12,094 INFO L470 AbstractCegarLoop]: Abstraction has 8982 states and 43247 transitions. [2021-10-07 14:59:12,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 8982 states and 43247 transitions. [2021-10-07 14:59:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:59:12,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:12,097 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:12,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-07 14:59:12,097 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:12,098 INFO L82 PathProgramCache]: Analyzing trace with hash 249224369, now seen corresponding path program 4 times [2021-10-07 14:59:12,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:12,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121468680] [2021-10-07 14:59:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:12,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:12,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:12,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121468680] [2021-10-07 14:59:12,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121468680] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:12,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980487214] [2021-10-07 14:59:12,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:12,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:12,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:12,152 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:12,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-07 14:59:12,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:12,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:12,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 14:59:12,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:12,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980487214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:12,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:12,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-07 14:59:12,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328463366] [2021-10-07 14:59:12,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 14:59:12,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:12,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 14:59:12,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:59:12,279 INFO L87 Difference]: Start difference. First operand 8982 states and 43247 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:12,468 INFO L93 Difference]: Finished difference Result 14044 states and 65988 transitions. [2021-10-07 14:59:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 14:59:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 14:59:12,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:12,596 INFO L225 Difference]: With dead ends: 14044 [2021-10-07 14:59:12,597 INFO L226 Difference]: Without dead ends: 13972 [2021-10-07 14:59:12,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-07 14:59:12,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13972 states. [2021-10-07 14:59:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13972 to 10424. [2021-10-07 14:59:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10424 states, 10401 states have (on average 4.855590808576099) internal successors, (50503), 10423 states have internal predecessors, (50503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10424 states to 10424 states and 50503 transitions. [2021-10-07 14:59:13,037 INFO L78 Accepts]: Start accepts. Automaton has 10424 states and 50503 transitions. Word has length 12 [2021-10-07 14:59:13,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:13,038 INFO L470 AbstractCegarLoop]: Abstraction has 10424 states and 50503 transitions. [2021-10-07 14:59:13,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 10424 states and 50503 transitions. [2021-10-07 14:59:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 14:59:13,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:13,040 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2021-10-07 14:59:13,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-07 14:59:13,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:13,254 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:13,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1781355057, now seen corresponding path program 8 times [2021-10-07 14:59:13,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:13,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145081543] [2021-10-07 14:59:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:13,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:13,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:13,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145081543] [2021-10-07 14:59:13,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145081543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:13,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844619266] [2021-10-07 14:59:13,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:13,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:13,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:13,452 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:13,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-07 14:59:13,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:13,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:13,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 14:59:13,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:13,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844619266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:13,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:13,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-07 14:59:13,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778422861] [2021-10-07 14:59:13,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:59:13,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:59:13,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:59:13,586 INFO L87 Difference]: Start difference. First operand 10424 states and 50503 transitions. Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2021-10-07 14:59:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:13,826 INFO L93 Difference]: Finished difference Result 19452 states and 89984 transitions. [2021-10-07 14:59:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:59:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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 12 [2021-10-07 14:59:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:13,936 INFO L225 Difference]: With dead ends: 19452 [2021-10-07 14:59:13,936 INFO L226 Difference]: Without dead ends: 19212 [2021-10-07 14:59:13,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:59:13,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19212 states. [2021-10-07 14:59:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19212 to 11370. [2021-10-07 14:59:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11370 states, 11347 states have (on average 4.86763021062836) internal successors, (55233), 11369 states have internal predecessors, (55233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11370 states to 11370 states and 55233 transitions. [2021-10-07 14:59:14,341 INFO L78 Accepts]: Start accepts. Automaton has 11370 states and 55233 transitions. Word has length 12 [2021-10-07 14:59:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:14,341 INFO L470 AbstractCegarLoop]: Abstraction has 11370 states and 55233 transitions. [2021-10-07 14:59:14,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2021-10-07 14:59:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 11370 states and 55233 transitions. [2021-10-07 14:59:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:59:14,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:14,346 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:14,387 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 [2021-10-07 14:59:14,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:14,559 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash -863976921, now seen corresponding path program 5 times [2021-10-07 14:59:14,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:14,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356130222] [2021-10-07 14:59:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:14,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:14,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:14,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356130222] [2021-10-07 14:59:14,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356130222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:14,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758532099] [2021-10-07 14:59:14,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:14,621 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:14,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:14,622 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:14,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-07 14:59:14,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 14:59:14,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:14,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 14:59:14,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:14,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758532099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:14,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:14,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-07 14:59:14,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658014248] [2021-10-07 14:59:14,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 14:59:14,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:14,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 14:59:14,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:59:14,751 INFO L87 Difference]: Start difference. First operand 11370 states and 55233 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2021-10-07 14:59:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:14,964 INFO L93 Difference]: Finished difference Result 17810 states and 84341 transitions. [2021-10-07 14:59:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 14:59:14,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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 [2021-10-07 14:59:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:15,066 INFO L225 Difference]: With dead ends: 17810 [2021-10-07 14:59:15,067 INFO L226 Difference]: Without dead ends: 17730 [2021-10-07 14:59:15,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-07 14:59:15,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17730 states. [2021-10-07 14:59:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17730 to 12944. [2021-10-07 14:59:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12944 states, 12921 states have (on average 4.8891726646544384) internal successors, (63173), 12943 states have internal predecessors, (63173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12944 states to 12944 states and 63173 transitions. [2021-10-07 14:59:15,492 INFO L78 Accepts]: Start accepts. Automaton has 12944 states and 63173 transitions. Word has length 13 [2021-10-07 14:59:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:15,492 INFO L470 AbstractCegarLoop]: Abstraction has 12944 states and 63173 transitions. [2021-10-07 14:59:15,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2021-10-07 14:59:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12944 states and 63173 transitions. [2021-10-07 14:59:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 14:59:15,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:15,495 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2021-10-07 14:59:15,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:15,701 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,SelfDestructingSolverStorable25 [2021-10-07 14:59:15,702 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:15,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash -612564415, now seen corresponding path program 9 times [2021-10-07 14:59:15,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:15,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162194412] [2021-10-07 14:59:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:15,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:15,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:15,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162194412] [2021-10-07 14:59:15,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162194412] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:15,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573470639] [2021-10-07 14:59:15,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:15,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:15,793 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:15,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-07 14:59:15,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-07 14:59:15,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:15,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 14:59:15,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:15,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573470639] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:15,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:15,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-07 14:59:15,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725705933] [2021-10-07 14:59:15,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:59:15,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:59:15,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:59:15,945 INFO L87 Difference]: Start difference. First operand 12944 states and 63173 transitions. Second operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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) [2021-10-07 14:59:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:16,275 INFO L93 Difference]: Finished difference Result 24324 states and 113167 transitions. [2021-10-07 14:59:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:59:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 14:59:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:16,438 INFO L225 Difference]: With dead ends: 24324 [2021-10-07 14:59:16,439 INFO L226 Difference]: Without dead ends: 24060 [2021-10-07 14:59:16,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.8ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:59:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24060 states. [2021-10-07 14:59:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24060 to 14022. [2021-10-07 14:59:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14022 states, 13999 states have (on average 4.899421387241945) internal successors, (68587), 14021 states have internal predecessors, (68587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14022 states to 14022 states and 68587 transitions. [2021-10-07 14:59:17,057 INFO L78 Accepts]: Start accepts. Automaton has 14022 states and 68587 transitions. Word has length 13 [2021-10-07 14:59:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:17,057 INFO L470 AbstractCegarLoop]: Abstraction has 14022 states and 68587 transitions. [2021-10-07 14:59:17,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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) [2021-10-07 14:59:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14022 states and 68587 transitions. [2021-10-07 14:59:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:59:17,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:17,061 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:17,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-07 14:59:17,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-07 14:59:17,276 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:17,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:17,276 INFO L82 PathProgramCache]: Analyzing trace with hash 89710775, now seen corresponding path program 1 times [2021-10-07 14:59:17,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:17,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776567446] [2021-10-07 14:59:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:17,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:17,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:17,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776567446] [2021-10-07 14:59:17,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776567446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:17,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102789202] [2021-10-07 14:59:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:17,319 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:17,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:17,320 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:17,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-07 14:59:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:17,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 14:59:17,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 14:59:17,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102789202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-07 14:59:17,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 14:59:17,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-07 14:59:17,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204937021] [2021-10-07 14:59:17,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 14:59:17,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 14:59:17,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:59:17,461 INFO L87 Difference]: Start difference. First operand 14022 states and 68587 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-10-07 14:59:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:17,596 INFO L93 Difference]: Finished difference Result 14570 states and 67673 transitions. [2021-10-07 14:59:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 14:59:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 [2021-10-07 14:59:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:17,693 INFO L225 Difference]: With dead ends: 14570 [2021-10-07 14:59:17,693 INFO L226 Difference]: Without dead ends: 13258 [2021-10-07 14:59:17,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 14:59:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13258 states. [2021-10-07 14:59:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13258 to 8996. [2021-10-07 14:59:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8996 states, 8981 states have (on average 4.561184723304755) internal successors, (40964), 8995 states have internal predecessors, (40964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8996 states to 8996 states and 40964 transitions. [2021-10-07 14:59:18,046 INFO L78 Accepts]: Start accepts. Automaton has 8996 states and 40964 transitions. Word has length 14 [2021-10-07 14:59:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:18,046 INFO L470 AbstractCegarLoop]: Abstraction has 8996 states and 40964 transitions. [2021-10-07 14:59:18,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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) [2021-10-07 14:59:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8996 states and 40964 transitions. [2021-10-07 14:59:18,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:59:18,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:18,050 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:18,076 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 [2021-10-07 14:59:18,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-07 14:59:18,261 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:18,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1013478543, now seen corresponding path program 6 times [2021-10-07 14:59:18,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:18,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880708075] [2021-10-07 14:59:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:18,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:18,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:18,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880708075] [2021-10-07 14:59:18,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880708075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:18,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343510] [2021-10-07 14:59:18,320 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:59:18,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:18,322 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:18,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-07 14:59:18,430 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 14:59:18,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 14:59:18,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:18,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343510] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:18,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:18,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-07 14:59:18,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113438032] [2021-10-07 14:59:18,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 14:59:18,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 14:59:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:59:18,477 INFO L87 Difference]: Start difference. First operand 8996 states and 40964 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) [2021-10-07 14:59:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:18,683 INFO L93 Difference]: Finished difference Result 14070 states and 63859 transitions. [2021-10-07 14:59:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 14:59:18,683 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 14 [2021-10-07 14:59:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:18,769 INFO L225 Difference]: With dead ends: 14070 [2021-10-07 14:59:18,769 INFO L226 Difference]: Without dead ends: 13324 [2021-10-07 14:59:18,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-07 14:59:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13324 states. [2021-10-07 14:59:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13324 to 9942. [2021-10-07 14:59:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9942 states, 9927 states have (on average 4.572479097411101) internal successors, (45391), 9941 states have internal predecessors, (45391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9942 states to 9942 states and 45391 transitions. [2021-10-07 14:59:19,219 INFO L78 Accepts]: Start accepts. Automaton has 9942 states and 45391 transitions. Word has length 14 [2021-10-07 14:59:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:19,219 INFO L470 AbstractCegarLoop]: Abstraction has 9942 states and 45391 transitions. [2021-10-07 14:59:19,220 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) [2021-10-07 14:59:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 9942 states and 45391 transitions. [2021-10-07 14:59:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 14:59:19,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:19,224 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2021-10-07 14:59:19,266 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 [2021-10-07 14:59:19,438 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,SelfDestructingSolverStorable28 [2021-10-07 14:59:19,439 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1809624015, now seen corresponding path program 10 times [2021-10-07 14:59:19,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:19,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383903584] [2021-10-07 14:59:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:19,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:19,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:19,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383903584] [2021-10-07 14:59:19,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383903584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:19,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818513062] [2021-10-07 14:59:19,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:19,535 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:19,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:19,537 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:19,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-07 14:59:19,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:19,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:19,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:59:19,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:19,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818513062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:19,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:19,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-07 14:59:19,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646661368] [2021-10-07 14:59:19,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:59:19,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:59:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:59:19,692 INFO L87 Difference]: Start difference. First operand 9942 states and 45391 transitions. Second operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:19,883 INFO L93 Difference]: Finished difference Result 18616 states and 81746 transitions. [2021-10-07 14:59:19,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:59:19,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 14:59:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:19,957 INFO L225 Difference]: With dead ends: 18616 [2021-10-07 14:59:19,957 INFO L226 Difference]: Without dead ends: 17728 [2021-10-07 14:59:19,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:59:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2021-10-07 14:59:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 10688. [2021-10-07 14:59:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10688 states, 10673 states have (on average 4.580249227021456) internal successors, (48885), 10687 states have internal predecessors, (48885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10688 states to 10688 states and 48885 transitions. [2021-10-07 14:59:20,308 INFO L78 Accepts]: Start accepts. Automaton has 10688 states and 48885 transitions. Word has length 14 [2021-10-07 14:59:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:20,308 INFO L470 AbstractCegarLoop]: Abstraction has 10688 states and 48885 transitions. [2021-10-07 14:59:20,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 10688 states and 48885 transitions. [2021-10-07 14:59:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:59:20,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:20,313 INFO L512 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:20,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:20,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:20,527 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:20,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1353061529, now seen corresponding path program 7 times [2021-10-07 14:59:20,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:20,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911798743] [2021-10-07 14:59:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:20,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:20,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:20,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911798743] [2021-10-07 14:59:20,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911798743] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:20,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570128981] [2021-10-07 14:59:20,609 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:59:20,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:20,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:20,611 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:20,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-07 14:59:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:20,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 14:59:20,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:20,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570128981] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:20,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:20,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-07 14:59:20,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842194500] [2021-10-07 14:59:20,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 14:59:20,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:20,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 14:59:20,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:59:20,761 INFO L87 Difference]: Start difference. First operand 10688 states and 48885 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:21,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:21,124 INFO L93 Difference]: Finished difference Result 16830 states and 76723 transitions. [2021-10-07 14:59:21,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 14:59:21,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 14:59:21,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:21,198 INFO L225 Difference]: With dead ends: 16830 [2021-10-07 14:59:21,198 INFO L226 Difference]: Without dead ends: 15920 [2021-10-07 14:59:21,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-07 14:59:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15920 states. [2021-10-07 14:59:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15920 to 11704. [2021-10-07 14:59:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11704 states, 11689 states have (on average 4.58952861664813) internal successors, (53647), 11703 states have internal predecessors, (53647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 53647 transitions. [2021-10-07 14:59:21,566 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 53647 transitions. Word has length 15 [2021-10-07 14:59:21,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:21,567 INFO L470 AbstractCegarLoop]: Abstraction has 11704 states and 53647 transitions. [2021-10-07 14:59:21,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 53647 transitions. [2021-10-07 14:59:21,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 14:59:21,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:21,575 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1] [2021-10-07 14:59:21,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:21,784 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,SelfDestructingSolverStorable30 [2021-10-07 14:59:21,785 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash -263765951, now seen corresponding path program 11 times [2021-10-07 14:59:21,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:21,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010833448] [2021-10-07 14:59:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:21,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:21,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:21,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010833448] [2021-10-07 14:59:21,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010833448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:21,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542386740] [2021-10-07 14:59:21,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:21,928 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:21,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:21,933 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:21,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-07 14:59:22,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-07 14:59:22,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:22,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 14:59:22,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:22,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542386740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:22,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:22,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-07 14:59:22,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388646530] [2021-10-07 14:59:22,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:59:22,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:59:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:59:22,118 INFO L87 Difference]: Start difference. First operand 11704 states and 53647 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:22,394 INFO L93 Difference]: Finished difference Result 22034 states and 97117 transitions. [2021-10-07 14:59:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:59:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 14:59:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:22,490 INFO L225 Difference]: With dead ends: 22034 [2021-10-07 14:59:22,491 INFO L226 Difference]: Without dead ends: 20942 [2021-10-07 14:59:22,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:59:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20942 states. [2021-10-07 14:59:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20942 to 12520. [2021-10-07 14:59:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12520 states, 12505 states have (on average 4.59624150339864) internal successors, (57476), 12519 states have internal predecessors, (57476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12520 states to 12520 states and 57476 transitions. [2021-10-07 14:59:22,921 INFO L78 Accepts]: Start accepts. Automaton has 12520 states and 57476 transitions. Word has length 15 [2021-10-07 14:59:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:22,922 INFO L470 AbstractCegarLoop]: Abstraction has 12520 states and 57476 transitions. [2021-10-07 14:59:22,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12520 states and 57476 transitions. [2021-10-07 14:59:22,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:59:22,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:22,928 INFO L512 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:22,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-07 14:59:23,128 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,SelfDestructingSolverStorable31 [2021-10-07 14:59:23,129 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:23,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1004767793, now seen corresponding path program 8 times [2021-10-07 14:59:23,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:23,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514549835] [2021-10-07 14:59:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:23,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:23,210 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:23,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:23,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514549835] [2021-10-07 14:59:23,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514549835] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:23,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430541552] [2021-10-07 14:59:23,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:23,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:23,213 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:23,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-07 14:59:23,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:23,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:23,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 14:59:23,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:23,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430541552] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:23,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:23,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-10-07 14:59:23,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832195122] [2021-10-07 14:59:23,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 14:59:23,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:23,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 14:59:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:59:23,416 INFO L87 Difference]: Start difference. First operand 12520 states and 57476 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:23,713 INFO L93 Difference]: Finished difference Result 19826 states and 90713 transitions. [2021-10-07 14:59:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 14:59:23,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 16 [2021-10-07 14:59:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:23,807 INFO L225 Difference]: With dead ends: 19826 [2021-10-07 14:59:23,807 INFO L226 Difference]: Without dead ends: 18736 [2021-10-07 14:59:23,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-07 14:59:23,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18736 states. [2021-10-07 14:59:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18736 to 13606. [2021-10-07 14:59:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13606 states, 13591 states have (on average 4.604002648811714) internal successors, (62573), 13605 states have internal predecessors, (62573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13606 states to 13606 states and 62573 transitions. [2021-10-07 14:59:24,246 INFO L78 Accepts]: Start accepts. Automaton has 13606 states and 62573 transitions. Word has length 16 [2021-10-07 14:59:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:24,246 INFO L470 AbstractCegarLoop]: Abstraction has 13606 states and 62573 transitions. [2021-10-07 14:59:24,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13606 states and 62573 transitions. [2021-10-07 14:59:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 14:59:24,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:24,253 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1] [2021-10-07 14:59:24,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-07 14:59:24,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:24,464 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:24,465 INFO L82 PathProgramCache]: Analyzing trace with hash 413193777, now seen corresponding path program 12 times [2021-10-07 14:59:24,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:24,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479981842] [2021-10-07 14:59:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:24,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:24,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:24,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479981842] [2021-10-07 14:59:24,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479981842] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:24,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509776213] [2021-10-07 14:59:24,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:59:24,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:24,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:24,584 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:24,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-07 14:59:24,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-07 14:59:24,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:24,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 14:59:24,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:24,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509776213] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:24,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:24,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-07 14:59:24,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155820058] [2021-10-07 14:59:24,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:59:24,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:59:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:59:24,770 INFO L87 Difference]: Start difference. First operand 13606 states and 62573 transitions. Second operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2021-10-07 14:59:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:25,085 INFO L93 Difference]: Finished difference Result 25736 states and 113790 transitions. [2021-10-07 14:59:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:59:25,086 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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 16 [2021-10-07 14:59:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:25,210 INFO L225 Difference]: With dead ends: 25736 [2021-10-07 14:59:25,211 INFO L226 Difference]: Without dead ends: 24420 [2021-10-07 14:59:25,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:59:25,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24420 states. [2021-10-07 14:59:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24420 to 14492. [2021-10-07 14:59:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14492 states, 14477 states have (on average 4.609863922083305) internal successors, (66737), 14491 states have internal predecessors, (66737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14492 states to 14492 states and 66737 transitions. [2021-10-07 14:59:25,684 INFO L78 Accepts]: Start accepts. Automaton has 14492 states and 66737 transitions. Word has length 16 [2021-10-07 14:59:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:25,684 INFO L470 AbstractCegarLoop]: Abstraction has 14492 states and 66737 transitions. [2021-10-07 14:59:25,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 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) [2021-10-07 14:59:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 14492 states and 66737 transitions. [2021-10-07 14:59:25,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:59:25,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:25,692 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:25,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:25,892 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,SelfDestructingSolverStorable33 [2021-10-07 14:59:25,893 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1083032743, now seen corresponding path program 9 times [2021-10-07 14:59:25,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:25,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974635049] [2021-10-07 14:59:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:25,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:25,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:25,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974635049] [2021-10-07 14:59:25,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974635049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:25,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146044689] [2021-10-07 14:59:25,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:25,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:25,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:25,988 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:26,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-07 14:59:26,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-07 14:59:26,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:26,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 14:59:26,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:26,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146044689] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:26,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:26,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-10-07 14:59:26,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703909778] [2021-10-07 14:59:26,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 14:59:26,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:26,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 14:59:26,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:59:26,206 INFO L87 Difference]: Start difference. First operand 14492 states and 66737 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:26,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:26,574 INFO L93 Difference]: Finished difference Result 23058 states and 105829 transitions. [2021-10-07 14:59:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 14:59:26,575 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 14:59:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:26,746 INFO L225 Difference]: With dead ends: 23058 [2021-10-07 14:59:26,747 INFO L226 Difference]: Without dead ends: 21772 [2021-10-07 14:59:26,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-07 14:59:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21772 states. [2021-10-07 14:59:27,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21772 to 15648. [2021-10-07 14:59:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15648 states, 15633 states have (on average 4.616452376383291) internal successors, (72169), 15647 states have internal predecessors, (72169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15648 states to 15648 states and 72169 transitions. [2021-10-07 14:59:27,471 INFO L78 Accepts]: Start accepts. Automaton has 15648 states and 72169 transitions. Word has length 17 [2021-10-07 14:59:27,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:27,471 INFO L470 AbstractCegarLoop]: Abstraction has 15648 states and 72169 transitions. [2021-10-07 14:59:27,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand 15648 states and 72169 transitions. [2021-10-07 14:59:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 14:59:27,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:27,478 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2021-10-07 14:59:27,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-07 14:59:27,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:27,679 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:27,680 INFO L82 PathProgramCache]: Analyzing trace with hash -75891135, now seen corresponding path program 13 times [2021-10-07 14:59:27,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:27,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677678610] [2021-10-07 14:59:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:27,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:27,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:27,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677678610] [2021-10-07 14:59:27,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677678610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:27,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451669668] [2021-10-07 14:59:27,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:59:27,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:27,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:27,833 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:27,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-07 14:59:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:27,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 14:59:27,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:28,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451669668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:28,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:28,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-07 14:59:28,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780775888] [2021-10-07 14:59:28,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 14:59:28,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 14:59:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:59:28,065 INFO L87 Difference]: Start difference. First operand 15648 states and 72169 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:28,764 INFO L93 Difference]: Finished difference Result 29722 states and 131765 transitions. [2021-10-07 14:59:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:59:28,765 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 14:59:28,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:29,034 INFO L225 Difference]: With dead ends: 29722 [2021-10-07 14:59:29,035 INFO L226 Difference]: Without dead ends: 28162 [2021-10-07 14:59:29,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:59:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28162 states. [2021-10-07 14:59:30,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28162 to 16604. [2021-10-07 14:59:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16604 states, 16589 states have (on average 4.621616733980348) internal successors, (76668), 16603 states have internal predecessors, (76668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16604 states to 16604 states and 76668 transitions. [2021-10-07 14:59:30,170 INFO L78 Accepts]: Start accepts. Automaton has 16604 states and 76668 transitions. Word has length 17 [2021-10-07 14:59:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:30,170 INFO L470 AbstractCegarLoop]: Abstraction has 16604 states and 76668 transitions. [2021-10-07 14:59:30,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 16604 states and 76668 transitions. [2021-10-07 14:59:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 14:59:30,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:30,179 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:30,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:30,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-07 14:59:30,381 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:30,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:30,382 INFO L82 PathProgramCache]: Analyzing trace with hash -785721103, now seen corresponding path program 10 times [2021-10-07 14:59:30,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:30,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906719705] [2021-10-07 14:59:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:30,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:30,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:30,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906719705] [2021-10-07 14:59:30,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906719705] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:30,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501457236] [2021-10-07 14:59:30,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:30,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:30,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:30,490 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:30,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-07 14:59:30,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:30,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:30,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 14:59:30,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:30,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501457236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:30,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:30,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-10-07 14:59:30,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575969819] [2021-10-07 14:59:30,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 14:59:30,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 14:59:30,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:59:30,687 INFO L87 Difference]: Start difference. First operand 16604 states and 76668 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:31,403 INFO L93 Difference]: Finished difference Result 26526 states and 122071 transitions. [2021-10-07 14:59:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 14:59:31,404 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 14:59:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:31,645 INFO L225 Difference]: With dead ends: 26526 [2021-10-07 14:59:31,645 INFO L226 Difference]: Without dead ends: 25028 [2021-10-07 14:59:31,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-07 14:59:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25028 states. [2021-10-07 14:59:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25028 to 17830. [2021-10-07 14:59:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17830 states, 17815 states have (on average 4.627280381700814) internal successors, (82435), 17829 states have internal predecessors, (82435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17830 states to 17830 states and 82435 transitions. [2021-10-07 14:59:32,671 INFO L78 Accepts]: Start accepts. Automaton has 17830 states and 82435 transitions. Word has length 18 [2021-10-07 14:59:32,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:32,671 INFO L470 AbstractCegarLoop]: Abstraction has 17830 states and 82435 transitions. [2021-10-07 14:59:32,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:32,677 INFO L276 IsEmpty]: Start isEmpty. Operand 17830 states and 82435 transitions. [2021-10-07 14:59:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 14:59:32,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:32,690 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2021-10-07 14:59:32,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:32,890 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,SelfDestructingSolverStorable36 [2021-10-07 14:59:32,891 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:32,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:32,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1942345777, now seen corresponding path program 14 times [2021-10-07 14:59:32,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:32,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024654920] [2021-10-07 14:59:32,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:32,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:33,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:33,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024654920] [2021-10-07 14:59:33,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024654920] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:33,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913293858] [2021-10-07 14:59:33,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:33,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:33,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:33,035 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:33,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-07 14:59:33,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:33,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:33,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 14:59:33,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:33,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913293858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:33,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:33,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-07 14:59:33,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427410814] [2021-10-07 14:59:33,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 14:59:33,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 14:59:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:59:33,240 INFO L87 Difference]: Start difference. First operand 17830 states and 82435 transitions. Second operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:34,008 INFO L93 Difference]: Finished difference Result 33992 states and 151042 transitions. [2021-10-07 14:59:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 14:59:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 14:59:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:34,480 INFO L225 Difference]: With dead ends: 33992 [2021-10-07 14:59:34,481 INFO L226 Difference]: Without dead ends: 32168 [2021-10-07 14:59:34,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:59:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32168 states. [2021-10-07 14:59:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32168 to 18856. [2021-10-07 14:59:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 18841 states have (on average 4.631866673743432) internal successors, (87269), 18855 states have internal predecessors, (87269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 87269 transitions. [2021-10-07 14:59:35,571 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 87269 transitions. Word has length 18 [2021-10-07 14:59:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:35,571 INFO L470 AbstractCegarLoop]: Abstraction has 18856 states and 87269 transitions. [2021-10-07 14:59:35,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 87269 transitions. [2021-10-07 14:59:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 14:59:35,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:35,589 INFO L512 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:35,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:35,802 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,SelfDestructingSolverStorable37 [2021-10-07 14:59:35,802 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1412451815, now seen corresponding path program 11 times [2021-10-07 14:59:35,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:35,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008201229] [2021-10-07 14:59:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:35,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:35,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:35,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008201229] [2021-10-07 14:59:35,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008201229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:35,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81943408] [2021-10-07 14:59:35,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:35,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:35,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:35,909 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:35,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-07 14:59:36,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-07 14:59:36,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:36,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 14:59:36,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:36,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81943408] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:36,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:36,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-10-07 14:59:36,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28151109] [2021-10-07 14:59:36,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 14:59:36,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:36,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 14:59:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:59:36,130 INFO L87 Difference]: Start difference. First operand 18856 states and 87269 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:36,715 INFO L93 Difference]: Finished difference Result 30230 states and 139439 transitions. [2021-10-07 14:59:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 14:59:36,715 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 14:59:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:36,879 INFO L225 Difference]: With dead ends: 30230 [2021-10-07 14:59:36,880 INFO L226 Difference]: Without dead ends: 28504 [2021-10-07 14:59:36,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-07 14:59:36,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28504 states. [2021-10-07 14:59:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28504 to 20152. [2021-10-07 14:59:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20152 states, 20137 states have (on average 4.636788002185033) internal successors, (93371), 20151 states have internal predecessors, (93371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20152 states to 20152 states and 93371 transitions. [2021-10-07 14:59:37,961 INFO L78 Accepts]: Start accepts. Automaton has 20152 states and 93371 transitions. Word has length 19 [2021-10-07 14:59:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:37,961 INFO L470 AbstractCegarLoop]: Abstraction has 20152 states and 93371 transitions. [2021-10-07 14:59:37,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 20152 states and 93371 transitions. [2021-10-07 14:59:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 14:59:37,972 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:37,972 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1] [2021-10-07 14:59:37,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:38,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-07 14:59:38,173 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash 83180609, now seen corresponding path program 15 times [2021-10-07 14:59:38,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:38,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122407827] [2021-10-07 14:59:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:38,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:38,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:38,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122407827] [2021-10-07 14:59:38,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122407827] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:38,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387030168] [2021-10-07 14:59:38,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 14:59:38,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:38,335 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:38,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-07 14:59:38,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-07 14:59:38,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:38,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 14:59:38,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:38,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387030168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:38,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:38,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-07 14:59:38,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182892919] [2021-10-07 14:59:38,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:59:38,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:59:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:59:38,567 INFO L87 Difference]: Start difference. First operand 20152 states and 93371 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2021-10-07 14:59:39,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:39,290 INFO L93 Difference]: Finished difference Result 38546 states and 171621 transitions. [2021-10-07 14:59:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 14:59:39,290 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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 19 [2021-10-07 14:59:39,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:39,507 INFO L225 Difference]: With dead ends: 38546 [2021-10-07 14:59:39,507 INFO L226 Difference]: Without dead ends: 36438 [2021-10-07 14:59:39,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:59:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36438 states. [2021-10-07 14:59:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36438 to 21248. [2021-10-07 14:59:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21248 states, 21233 states have (on average 4.640889181933782) internal successors, (98540), 21247 states have internal predecessors, (98540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:40,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 98540 transitions. [2021-10-07 14:59:40,891 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 98540 transitions. Word has length 19 [2021-10-07 14:59:40,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:40,891 INFO L470 AbstractCegarLoop]: Abstraction has 21248 states and 98540 transitions. [2021-10-07 14:59:40,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2021-10-07 14:59:40,891 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 98540 transitions. [2021-10-07 14:59:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 14:59:40,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:40,906 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:40,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:41,107 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,SelfDestructingSolverStorable39 [2021-10-07 14:59:41,108 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:41,109 INFO L82 PathProgramCache]: Analyzing trace with hash 836335537, now seen corresponding path program 12 times [2021-10-07 14:59:41,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:41,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325839641] [2021-10-07 14:59:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:41,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:41,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:41,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325839641] [2021-10-07 14:59:41,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325839641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:41,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644840821] [2021-10-07 14:59:41,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:59:41,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:41,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:41,242 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:41,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-07 14:59:41,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-07 14:59:41,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:41,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 14:59:41,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:41,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644840821] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:41,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:41,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2021-10-07 14:59:41,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793763959] [2021-10-07 14:59:41,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 14:59:41,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 14:59:41,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:59:41,509 INFO L87 Difference]: Start difference. First operand 21248 states and 98540 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:42,389 INFO L93 Difference]: Finished difference Result 34170 states and 157933 transitions. [2021-10-07 14:59:42,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 14:59:42,389 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 14:59:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:42,571 INFO L225 Difference]: With dead ends: 34170 [2021-10-07 14:59:42,572 INFO L226 Difference]: Without dead ends: 32200 [2021-10-07 14:59:42,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-07 14:59:42,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32200 states. [2021-10-07 14:59:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32200 to 22614. [2021-10-07 14:59:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22614 states, 22599 states have (on average 4.645205540068145) internal successors, (104977), 22613 states have internal predecessors, (104977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22614 states to 22614 states and 104977 transitions. [2021-10-07 14:59:43,992 INFO L78 Accepts]: Start accepts. Automaton has 22614 states and 104977 transitions. Word has length 20 [2021-10-07 14:59:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:43,993 INFO L470 AbstractCegarLoop]: Abstraction has 22614 states and 104977 transitions. [2021-10-07 14:59:43,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 22614 states and 104977 transitions. [2021-10-07 14:59:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 14:59:44,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:44,006 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2021-10-07 14:59:44,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:44,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:44,207 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:44,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1716364751, now seen corresponding path program 16 times [2021-10-07 14:59:44,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:44,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843325035] [2021-10-07 14:59:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:44,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:44,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:44,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843325035] [2021-10-07 14:59:44,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843325035] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:44,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859749010] [2021-10-07 14:59:44,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 14:59:44,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:44,420 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:44,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-07 14:59:44,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 14:59:44,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:44,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 14:59:44,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:44,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859749010] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:44,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:44,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-07 14:59:44,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174418220] [2021-10-07 14:59:44,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 14:59:44,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 14:59:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:59:44,645 INFO L87 Difference]: Start difference. First operand 22614 states and 104977 transitions. Second operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:45,541 INFO L93 Difference]: Finished difference Result 43384 states and 193502 transitions. [2021-10-07 14:59:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 14:59:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 14:59:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:45,829 INFO L225 Difference]: With dead ends: 43384 [2021-10-07 14:59:45,829 INFO L226 Difference]: Without dead ends: 40972 [2021-10-07 14:59:45,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-07 14:59:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40972 states. [2021-10-07 14:59:47,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40972 to 23780. [2021-10-07 14:59:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23780 states, 23765 states have (on average 4.648895434462445) internal successors, (110481), 23779 states have internal predecessors, (110481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23780 states to 23780 states and 110481 transitions. [2021-10-07 14:59:47,382 INFO L78 Accepts]: Start accepts. Automaton has 23780 states and 110481 transitions. Word has length 20 [2021-10-07 14:59:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:47,383 INFO L470 AbstractCegarLoop]: Abstraction has 23780 states and 110481 transitions. [2021-10-07 14:59:47,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:47,383 INFO L276 IsEmpty]: Start isEmpty. Operand 23780 states and 110481 transitions. [2021-10-07 14:59:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:59:47,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:47,399 INFO L512 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:47,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:47,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:47,608 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash 156600103, now seen corresponding path program 13 times [2021-10-07 14:59:47,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:47,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753475585] [2021-10-07 14:59:47,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:47,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:47,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:47,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753475585] [2021-10-07 14:59:47,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753475585] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:47,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503047650] [2021-10-07 14:59:47,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 14:59:47,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:47,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:47,750 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:47,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-07 14:59:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:47,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 14:59:47,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:48,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503047650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:48,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:48,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-10-07 14:59:48,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208275603] [2021-10-07 14:59:48,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 14:59:48,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 14:59:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:59:48,003 INFO L87 Difference]: Start difference. First operand 23780 states and 110481 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:48,988 INFO L93 Difference]: Finished difference Result 38346 states and 177553 transitions. [2021-10-07 14:59:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 14:59:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 14:59:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:49,269 INFO L225 Difference]: With dead ends: 38346 [2021-10-07 14:59:49,269 INFO L226 Difference]: Without dead ends: 36116 [2021-10-07 14:59:49,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 91.7ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-07 14:59:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36116 states. [2021-10-07 14:59:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36116 to 25216. [2021-10-07 14:59:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25216 states, 25201 states have (on average 4.652712193960557) internal successors, (117253), 25215 states have internal predecessors, (117253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25216 states to 25216 states and 117253 transitions. [2021-10-07 14:59:50,629 INFO L78 Accepts]: Start accepts. Automaton has 25216 states and 117253 transitions. Word has length 21 [2021-10-07 14:59:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:50,629 INFO L470 AbstractCegarLoop]: Abstraction has 25216 states and 117253 transitions. [2021-10-07 14:59:50,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 25216 states and 117253 transitions. [2021-10-07 14:59:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 14:59:50,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:50,650 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1] [2021-10-07 14:59:50,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-07 14:59:50,850 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,SelfDestructingSolverStorable42 [2021-10-07 14:59:50,851 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:50,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1667696063, now seen corresponding path program 17 times [2021-10-07 14:59:50,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:50,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084779442] [2021-10-07 14:59:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:50,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:51,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:51,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084779442] [2021-10-07 14:59:51,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084779442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:51,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549584930] [2021-10-07 14:59:51,060 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 14:59:51,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:51,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:51,063 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:51,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-07 14:59:51,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-07 14:59:51,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:51,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 14:59:51,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:51,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549584930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:51,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:51,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-07 14:59:51,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122053259] [2021-10-07 14:59:51,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 14:59:51,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:51,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 14:59:51,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:59:51,749 INFO L87 Difference]: Start difference. First operand 25216 states and 117253 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-10-07 14:59:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:52,393 INFO L93 Difference]: Finished difference Result 48506 states and 216685 transitions. [2021-10-07 14:59:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 14:59:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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 21 [2021-10-07 14:59:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:53,166 INFO L225 Difference]: With dead ends: 48506 [2021-10-07 14:59:53,166 INFO L226 Difference]: Without dead ends: 45770 [2021-10-07 14:59:53,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-07 14:59:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45770 states. [2021-10-07 14:59:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45770 to 26452. [2021-10-07 14:59:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26452 states, 26437 states have (on average 4.656050232628513) internal successors, (123092), 26451 states have internal predecessors, (123092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26452 states to 26452 states and 123092 transitions. [2021-10-07 14:59:54,507 INFO L78 Accepts]: Start accepts. Automaton has 26452 states and 123092 transitions. Word has length 21 [2021-10-07 14:59:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:54,507 INFO L470 AbstractCegarLoop]: Abstraction has 26452 states and 123092 transitions. [2021-10-07 14:59:54,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-10-07 14:59:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 26452 states and 123092 transitions. [2021-10-07 14:59:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:59:54,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:54,530 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 14:59:54,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:54,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:54,731 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:54,732 INFO L82 PathProgramCache]: Analyzing trace with hash 559638129, now seen corresponding path program 14 times [2021-10-07 14:59:54,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:54,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355741606] [2021-10-07 14:59:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:54,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:54,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:54,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355741606] [2021-10-07 14:59:54,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355741606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:54,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90146636] [2021-10-07 14:59:54,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 14:59:54,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:54,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:54,886 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:54,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-07 14:59:55,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 14:59:55,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:55,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 14:59:55,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:55,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90146636] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:55,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:55,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-07 14:59:55,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540876718] [2021-10-07 14:59:55,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 14:59:55,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 14:59:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:59:55,185 INFO L87 Difference]: Start difference. First operand 26452 states and 123092 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 14:59:56,332 INFO L93 Difference]: Finished difference Result 42758 states and 198299 transitions. [2021-10-07 14:59:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 14:59:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-07 14:59:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 14:59:56,599 INFO L225 Difference]: With dead ends: 42758 [2021-10-07 14:59:56,599 INFO L226 Difference]: Without dead ends: 40252 [2021-10-07 14:59:56,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-07 14:59:56,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40252 states. [2021-10-07 14:59:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40252 to 27958. [2021-10-07 14:59:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27958 states, 27943 states have (on average 4.659449593815983) internal successors, (130199), 27957 states have internal predecessors, (130199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27958 states to 27958 states and 130199 transitions. [2021-10-07 14:59:58,399 INFO L78 Accepts]: Start accepts. Automaton has 27958 states and 130199 transitions. Word has length 22 [2021-10-07 14:59:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 14:59:58,400 INFO L470 AbstractCegarLoop]: Abstraction has 27958 states and 130199 transitions. [2021-10-07 14:59:58,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 14:59:58,400 INFO L276 IsEmpty]: Start isEmpty. Operand 27958 states and 130199 transitions. [2021-10-07 14:59:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-07 14:59:58,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 14:59:58,423 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1] [2021-10-07 14:59:58,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-07 14:59:58,631 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,SelfDestructingSolverStorable44 [2021-10-07 14:59:58,632 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 14:59:58,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 14:59:58,633 INFO L82 PathProgramCache]: Analyzing trace with hash -158966735, now seen corresponding path program 18 times [2021-10-07 14:59:58,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 14:59:58,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323886282] [2021-10-07 14:59:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 14:59:58,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 14:59:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 14:59:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:58,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 14:59:58,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323886282] [2021-10-07 14:59:58,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323886282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:58,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484397257] [2021-10-07 14:59:58,842 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 14:59:58,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 14:59:58,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 14:59:58,843 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 14:59:58,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-07 14:59:59,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-07 14:59:59,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 14:59:59,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 14:59:59,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 14:59:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 14:59:59,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484397257] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 14:59:59,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 14:59:59,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-07 14:59:59,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035292897] [2021-10-07 14:59:59,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 14:59:59,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 14:59:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 14:59:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-07 14:59:59,123 INFO L87 Difference]: Start difference. First operand 27958 states and 130199 transitions. Second operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:00,171 INFO L93 Difference]: Finished difference Result 53912 states and 241170 transitions. [2021-10-07 15:00:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:00:00,171 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 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 22 [2021-10-07 15:00:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:00,555 INFO L225 Difference]: With dead ends: 53912 [2021-10-07 15:00:00,555 INFO L226 Difference]: Without dead ends: 50832 [2021-10-07 15:00:00,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:00:00,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50832 states. [2021-10-07 15:00:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50832 to 29264. [2021-10-07 15:00:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29264 states, 29249 states have (on average 4.66248418749359) internal successors, (136373), 29263 states have internal predecessors, (136373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29264 states to 29264 states and 136373 transitions. [2021-10-07 15:00:02,576 INFO L78 Accepts]: Start accepts. Automaton has 29264 states and 136373 transitions. Word has length 22 [2021-10-07 15:00:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:02,576 INFO L470 AbstractCegarLoop]: Abstraction has 29264 states and 136373 transitions. [2021-10-07 15:00:02,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 29264 states and 136373 transitions. [2021-10-07 15:00:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:00:02,598 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:02,598 INFO L512 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:02,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:02,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:02,799 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:02,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:02,800 INFO L82 PathProgramCache]: Analyzing trace with hash 168915047, now seen corresponding path program 15 times [2021-10-07 15:00:02,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:02,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87441262] [2021-10-07 15:00:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:02,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:02,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:02,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87441262] [2021-10-07 15:00:02,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87441262] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:02,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303050714] [2021-10-07 15:00:02,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:00:02,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:02,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:02,962 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:02,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-07 15:00:03,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-07 15:00:03,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:03,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:00:03,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:03,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303050714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:03,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:03,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2021-10-07 15:00:03,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437156193] [2021-10-07 15:00:03,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 15:00:03,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 15:00:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:00:03,248 INFO L87 Difference]: Start difference. First operand 29264 states and 136373 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) [2021-10-07 15:00:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:04,242 INFO L93 Difference]: Finished difference Result 47406 states and 220171 transitions. [2021-10-07 15:00:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-07 15:00:04,243 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 23 [2021-10-07 15:00:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:04,598 INFO L225 Difference]: With dead ends: 47406 [2021-10-07 15:00:04,598 INFO L226 Difference]: Without dead ends: 44608 [2021-10-07 15:00:04,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:00:04,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44608 states. [2021-10-07 15:00:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44608 to 30840. [2021-10-07 15:00:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30840 states, 30825 states have (on average 4.665531224655313) internal successors, (143815), 30839 states have internal predecessors, (143815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30840 states to 30840 states and 143815 transitions. [2021-10-07 15:00:06,514 INFO L78 Accepts]: Start accepts. Automaton has 30840 states and 143815 transitions. Word has length 23 [2021-10-07 15:00:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:06,514 INFO L470 AbstractCegarLoop]: Abstraction has 30840 states and 143815 transitions. [2021-10-07 15:00:06,514 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) [2021-10-07 15:00:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 30840 states and 143815 transitions. [2021-10-07 15:00:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:00:06,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:06,537 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1] [2021-10-07 15:00:06,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:06,738 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,SelfDestructingSolverStorable46 [2021-10-07 15:00:06,738 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:06,739 INFO L82 PathProgramCache]: Analyzing trace with hash -632997823, now seen corresponding path program 19 times [2021-10-07 15:00:06,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:06,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2633966] [2021-10-07 15:00:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:06,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:06,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:06,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2633966] [2021-10-07 15:00:06,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2633966] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:06,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567941269] [2021-10-07 15:00:06,993 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:00:06,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:06,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:06,994 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:06,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-07 15:00:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:07,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:00:07,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:07,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567941269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:07,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:07,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-10-07 15:00:07,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690476895] [2021-10-07 15:00:07,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:00:07,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:00:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:00:07,266 INFO L87 Difference]: Start difference. First operand 30840 states and 143815 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:08,423 INFO L93 Difference]: Finished difference Result 59602 states and 266957 transitions. [2021-10-07 15:00:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:00:08,424 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 15:00:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:08,849 INFO L225 Difference]: With dead ends: 59602 [2021-10-07 15:00:08,849 INFO L226 Difference]: Without dead ends: 56158 [2021-10-07 15:00:08,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 188.6ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:00:08,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56158 states. [2021-10-07 15:00:10,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56158 to 32216. [2021-10-07 15:00:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32216 states, 32201 states have (on average 4.668302226638924) internal successors, (150324), 32215 states have internal predecessors, (150324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32216 states to 32216 states and 150324 transitions. [2021-10-07 15:00:10,856 INFO L78 Accepts]: Start accepts. Automaton has 32216 states and 150324 transitions. Word has length 23 [2021-10-07 15:00:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:10,857 INFO L470 AbstractCegarLoop]: Abstraction has 32216 states and 150324 transitions. [2021-10-07 15:00:10,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 32216 states and 150324 transitions. [2021-10-07 15:00:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:00:10,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:10,879 INFO L512 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:10,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:11,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:11,080 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:11,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:11,081 INFO L82 PathProgramCache]: Analyzing trace with hash 941401393, now seen corresponding path program 16 times [2021-10-07 15:00:11,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:11,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783103444] [2021-10-07 15:00:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:11,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:11,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:11,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783103444] [2021-10-07 15:00:11,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783103444] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:11,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732775682] [2021-10-07 15:00:11,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:00:11,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:11,269 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:11,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-07 15:00:11,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:00:11,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:11,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:00:11,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:11,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732775682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:11,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:11,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2021-10-07 15:00:11,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234475293] [2021-10-07 15:00:11,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 15:00:11,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 15:00:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:00:11,562 INFO L87 Difference]: Start difference. First operand 32216 states and 150324 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) [2021-10-07 15:00:12,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:12,673 INFO L93 Difference]: Finished difference Result 52290 states and 243169 transitions. [2021-10-07 15:00:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 15:00:12,673 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 24 [2021-10-07 15:00:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:13,032 INFO L225 Difference]: With dead ends: 52290 [2021-10-07 15:00:13,033 INFO L226 Difference]: Without dead ends: 49184 [2021-10-07 15:00:13,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-07 15:00:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49184 states. [2021-10-07 15:00:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49184 to 33862. [2021-10-07 15:00:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33862 states, 33847 states have (on average 4.671049132862588) internal successors, (158101), 33861 states have internal predecessors, (158101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33862 states to 33862 states and 158101 transitions. [2021-10-07 15:00:14,928 INFO L78 Accepts]: Start accepts. Automaton has 33862 states and 158101 transitions. Word has length 24 [2021-10-07 15:00:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:14,929 INFO L470 AbstractCegarLoop]: Abstraction has 33862 states and 158101 transitions. [2021-10-07 15:00:14,929 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) [2021-10-07 15:00:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 33862 states and 158101 transitions. [2021-10-07 15:00:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:00:14,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:14,954 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1] [2021-10-07 15:00:14,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:15,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-07 15:00:15,156 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:15,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1851907633, now seen corresponding path program 20 times [2021-10-07 15:00:15,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:15,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586206414] [2021-10-07 15:00:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:15,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:15,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:15,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586206414] [2021-10-07 15:00:15,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586206414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:15,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165323091] [2021-10-07 15:00:15,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:00:15,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:15,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:15,413 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:15,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-07 15:00:15,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:00:15,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:15,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:00:15,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:15,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165323091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:15,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:15,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-10-07 15:00:15,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105696644] [2021-10-07 15:00:15,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:00:15,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:00:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:00:15,687 INFO L87 Difference]: Start difference. First operand 33862 states and 158101 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:17,377 INFO L93 Difference]: Finished difference Result 65576 states and 294046 transitions. [2021-10-07 15:00:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:00:17,377 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 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 24 [2021-10-07 15:00:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:18,086 INFO L225 Difference]: With dead ends: 65576 [2021-10-07 15:00:18,086 INFO L226 Difference]: Without dead ends: 61748 [2021-10-07 15:00:18,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 190.9ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:00:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61748 states. [2021-10-07 15:00:20,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61748 to 35308. [2021-10-07 15:00:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35308 states, 35293 states have (on average 4.673589663672683) internal successors, (164945), 35307 states have internal predecessors, (164945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35308 states to 35308 states and 164945 transitions. [2021-10-07 15:00:20,423 INFO L78 Accepts]: Start accepts. Automaton has 35308 states and 164945 transitions. Word has length 24 [2021-10-07 15:00:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:20,423 INFO L470 AbstractCegarLoop]: Abstraction has 35308 states and 164945 transitions. [2021-10-07 15:00:20,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 35308 states and 164945 transitions. [2021-10-07 15:00:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:00:20,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:20,450 INFO L512 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:20,476 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 [2021-10-07 15:00:20,650 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,SelfDestructingSolverStorable49 [2021-10-07 15:00:20,651 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:20,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:20,652 INFO L82 PathProgramCache]: Analyzing trace with hash -881325657, now seen corresponding path program 17 times [2021-10-07 15:00:20,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:20,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937704762] [2021-10-07 15:00:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:20,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:20,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:20,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937704762] [2021-10-07 15:00:20,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937704762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:20,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496689845] [2021-10-07 15:00:20,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:00:20,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:20,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:20,883 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:20,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-07 15:00:21,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-07 15:00:21,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:21,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:00:21,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:21,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496689845] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:21,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:21,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2021-10-07 15:00:21,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623535965] [2021-10-07 15:00:21,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-07 15:00:21,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:21,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-07 15:00:21,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:00:21,209 INFO L87 Difference]: Start difference. First operand 35308 states and 164945 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) [2021-10-07 15:00:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:22,411 INFO L93 Difference]: Finished difference Result 57410 states and 267293 transitions. [2021-10-07 15:00:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 15:00:22,412 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 25 [2021-10-07 15:00:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:22,760 INFO L225 Difference]: With dead ends: 57410 [2021-10-07 15:00:22,760 INFO L226 Difference]: Without dead ends: 53980 [2021-10-07 15:00:22,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:00:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53980 states. [2021-10-07 15:00:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53980 to 37024. [2021-10-07 15:00:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37024 states, 37009 states have (on average 4.676078791645275) internal successors, (173057), 37023 states have internal predecessors, (173057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37024 states to 37024 states and 173057 transitions. [2021-10-07 15:00:24,819 INFO L78 Accepts]: Start accepts. Automaton has 37024 states and 173057 transitions. Word has length 25 [2021-10-07 15:00:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:24,820 INFO L470 AbstractCegarLoop]: Abstraction has 37024 states and 173057 transitions. [2021-10-07 15:00:24,820 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) [2021-10-07 15:00:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 37024 states and 173057 transitions. [2021-10-07 15:00:24,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:00:24,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:24,856 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1] [2021-10-07 15:00:24,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-10-07 15:00:25,066 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,SelfDestructingSolverStorable50 [2021-10-07 15:00:25,067 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:25,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:25,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1574565441, now seen corresponding path program 21 times [2021-10-07 15:00:25,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:25,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457591952] [2021-10-07 15:00:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:25,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:25,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:25,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457591952] [2021-10-07 15:00:25,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457591952] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:25,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515570157] [2021-10-07 15:00:25,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:00:25,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:25,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:25,346 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:25,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-07 15:00:25,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-07 15:00:25,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:25,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:00:25,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:25,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515570157] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:25,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:25,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-07 15:00:25,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602693456] [2021-10-07 15:00:25,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:00:25,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:25,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:00:25,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:00:25,678 INFO L87 Difference]: Start difference. First operand 37024 states and 173057 transitions. Second operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:27,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:27,793 INFO L93 Difference]: Finished difference Result 71834 states and 322437 transitions. [2021-10-07 15:00:27,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:00:27,793 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:00:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:28,354 INFO L225 Difference]: With dead ends: 71834 [2021-10-07 15:00:28,354 INFO L226 Difference]: Without dead ends: 67602 [2021-10-07 15:00:28,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.6ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:00:28,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67602 states. [2021-10-07 15:00:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67602 to 38540. [2021-10-07 15:00:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38540 states, 38525 states have (on average 4.678416612589228) internal successors, (180236), 38539 states have internal predecessors, (180236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38540 states to 38540 states and 180236 transitions. [2021-10-07 15:00:30,791 INFO L78 Accepts]: Start accepts. Automaton has 38540 states and 180236 transitions. Word has length 25 [2021-10-07 15:00:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:30,791 INFO L470 AbstractCegarLoop]: Abstraction has 38540 states and 180236 transitions. [2021-10-07 15:00:30,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:30,792 INFO L276 IsEmpty]: Start isEmpty. Operand 38540 states and 180236 transitions. [2021-10-07 15:00:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:00:30,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:30,837 INFO L512 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:30,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-10-07 15:00:31,050 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,SelfDestructingSolverStorable51 [2021-10-07 15:00:31,051 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:31,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1551289359, now seen corresponding path program 18 times [2021-10-07 15:00:31,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:31,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724143344] [2021-10-07 15:00:31,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:31,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:31,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:31,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724143344] [2021-10-07 15:00:31,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724143344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:31,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301584361] [2021-10-07 15:00:31,280 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:00:31,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:31,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:31,282 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:31,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-07 15:00:31,537 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-07 15:00:31,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:31,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:00:31,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:31,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301584361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:31,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:31,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-10-07 15:00:31,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701839318] [2021-10-07 15:00:31,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:00:31,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:00:31,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:00:31,620 INFO L87 Difference]: Start difference. First operand 38540 states and 180236 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) [2021-10-07 15:00:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:32,878 INFO L93 Difference]: Finished difference Result 62766 states and 292543 transitions. [2021-10-07 15:00:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:00:32,878 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 26 [2021-10-07 15:00:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:33,831 INFO L225 Difference]: With dead ends: 62766 [2021-10-07 15:00:33,832 INFO L226 Difference]: Without dead ends: 58996 [2021-10-07 15:00:33,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 171.4ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:00:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58996 states. [2021-10-07 15:00:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58996 to 40326. [2021-10-07 15:00:35,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40326 states, 40311 states have (on average 4.680682692069162) internal successors, (188683), 40325 states have internal predecessors, (188683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40326 states to 40326 states and 188683 transitions. [2021-10-07 15:00:36,170 INFO L78 Accepts]: Start accepts. Automaton has 40326 states and 188683 transitions. Word has length 26 [2021-10-07 15:00:36,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:36,171 INFO L470 AbstractCegarLoop]: Abstraction has 40326 states and 188683 transitions. [2021-10-07 15:00:36,171 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) [2021-10-07 15:00:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 40326 states and 188683 transitions. [2021-10-07 15:00:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:00:36,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:36,256 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2021-10-07 15:00:36,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:36,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:36,457 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:36,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1566892081, now seen corresponding path program 22 times [2021-10-07 15:00:36,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:36,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837252200] [2021-10-07 15:00:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:36,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:36,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:36,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837252200] [2021-10-07 15:00:36,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837252200] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:36,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274555284] [2021-10-07 15:00:36,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:00:36,754 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:36,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:36,755 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:36,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-07 15:00:36,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:00:36,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:36,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:00:37,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:37,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274555284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:37,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:37,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-07 15:00:37,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118225547] [2021-10-07 15:00:37,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:00:37,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:00:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:00:37,082 INFO L87 Difference]: Start difference. First operand 40326 states and 188683 transitions. Second operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:38,673 INFO L93 Difference]: Finished difference Result 78376 states and 352130 transitions. [2021-10-07 15:00:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:00:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-07 15:00:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:39,267 INFO L225 Difference]: With dead ends: 78376 [2021-10-07 15:00:39,268 INFO L226 Difference]: Without dead ends: 73720 [2021-10-07 15:00:39,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 232.4ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:00:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73720 states. [2021-10-07 15:00:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73720 to 41912. [2021-10-07 15:00:41,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41912 states, 41897 states have (on average 4.682841253550373) internal successors, (196197), 41911 states have internal predecessors, (196197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41912 states to 41912 states and 196197 transitions. [2021-10-07 15:00:42,454 INFO L78 Accepts]: Start accepts. Automaton has 41912 states and 196197 transitions. Word has length 26 [2021-10-07 15:00:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:42,454 INFO L470 AbstractCegarLoop]: Abstraction has 41912 states and 196197 transitions. [2021-10-07 15:00:42,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 41912 states and 196197 transitions. [2021-10-07 15:00:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:00:42,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:42,511 INFO L512 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:42,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-07 15:00:42,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:42,728 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:42,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:42,729 INFO L82 PathProgramCache]: Analyzing trace with hash -845327641, now seen corresponding path program 19 times [2021-10-07 15:00:42,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:42,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685152384] [2021-10-07 15:00:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:42,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:42,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:42,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685152384] [2021-10-07 15:00:42,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685152384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:42,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871354316] [2021-10-07 15:00:42,974 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:00:42,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:42,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:42,975 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:42,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-07 15:00:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:43,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:00:43,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:43,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871354316] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:43,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:43,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2021-10-07 15:00:43,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030858871] [2021-10-07 15:00:43,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 15:00:43,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:43,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 15:00:43,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:00:43,317 INFO L87 Difference]: Start difference. First operand 41912 states and 196197 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) [2021-10-07 15:00:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:44,817 INFO L93 Difference]: Finished difference Result 68358 states and 318919 transitions. [2021-10-07 15:00:44,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:00:44,817 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 27 [2021-10-07 15:00:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:45,336 INFO L225 Difference]: With dead ends: 68358 [2021-10-07 15:00:45,336 INFO L226 Difference]: Without dead ends: 64232 [2021-10-07 15:00:45,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 182.7ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:00:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64232 states. [2021-10-07 15:00:47,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64232 to 43768. [2021-10-07 15:00:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43768 states, 43753 states have (on average 4.684913034534775) internal successors, (204979), 43767 states have internal predecessors, (204979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43768 states to 43768 states and 204979 transitions. [2021-10-07 15:00:47,723 INFO L78 Accepts]: Start accepts. Automaton has 43768 states and 204979 transitions. Word has length 27 [2021-10-07 15:00:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:47,724 INFO L470 AbstractCegarLoop]: Abstraction has 43768 states and 204979 transitions. [2021-10-07 15:00:47,724 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) [2021-10-07 15:00:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 43768 states and 204979 transitions. [2021-10-07 15:00:48,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:00:48,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:48,274 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1] [2021-10-07 15:00:48,349 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 [2021-10-07 15:00:48,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:48,476 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:48,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:48,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1329017921, now seen corresponding path program 23 times [2021-10-07 15:00:48,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:48,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20164770] [2021-10-07 15:00:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:48,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:48,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:48,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20164770] [2021-10-07 15:00:48,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20164770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:48,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859425921] [2021-10-07 15:00:48,837 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:00:48,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:48,842 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:48,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-07 15:00:49,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-07 15:00:49,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:49,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 15:00:49,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:49,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859425921] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:49,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:49,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-07 15:00:49,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527382209] [2021-10-07 15:00:49,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:00:49,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:00:49,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:00:49,200 INFO L87 Difference]: Start difference. First operand 43768 states and 204979 transitions. Second operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:50,963 INFO L93 Difference]: Finished difference Result 85202 states and 383125 transitions. [2021-10-07 15:00:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:00:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-07 15:00:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:51,622 INFO L225 Difference]: With dead ends: 85202 [2021-10-07 15:00:51,622 INFO L226 Difference]: Without dead ends: 80102 [2021-10-07 15:00:51,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 269.0ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:00:51,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80102 states. [2021-10-07 15:00:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80102 to 45424. [2021-10-07 15:00:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45424 states, 45409 states have (on average 4.686912286110683) internal successors, (212828), 45423 states have internal predecessors, (212828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45424 states to 45424 states and 212828 transitions. [2021-10-07 15:00:54,953 INFO L78 Accepts]: Start accepts. Automaton has 45424 states and 212828 transitions. Word has length 27 [2021-10-07 15:00:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:00:54,954 INFO L470 AbstractCegarLoop]: Abstraction has 45424 states and 212828 transitions. [2021-10-07 15:00:54,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 45424 states and 212828 transitions. [2021-10-07 15:00:55,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 15:00:55,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:00:55,006 INFO L512 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:00:55,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-07 15:00:55,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-07 15:00:55,207 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:00:55,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:00:55,207 INFO L82 PathProgramCache]: Analyzing trace with hash -435350863, now seen corresponding path program 20 times [2021-10-07 15:00:55,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:00:55,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656907815] [2021-10-07 15:00:55,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:00:55,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:00:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:00:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:55,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:00:55,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656907815] [2021-10-07 15:00:55,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656907815] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:55,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250595440] [2021-10-07 15:00:55,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:00:55,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:00:55,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:00:55,438 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:00:55,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-07 15:00:55,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:00:55,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:00:55,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 15:00:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:00:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:00:55,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250595440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:00:55,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:00:55,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2021-10-07 15:00:55,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476006833] [2021-10-07 15:00:55,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:00:55,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:00:55,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:00:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:00:55,803 INFO L87 Difference]: Start difference. First operand 45424 states and 212828 transitions. Second operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:00:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:00:57,344 INFO L93 Difference]: Finished difference Result 74186 states and 346421 transitions. [2021-10-07 15:00:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 15:00:57,345 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-07 15:00:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:00:58,374 INFO L225 Difference]: With dead ends: 74186 [2021-10-07 15:00:58,375 INFO L226 Difference]: Without dead ends: 69688 [2021-10-07 15:00:58,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 176.7ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:00:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69688 states. [2021-10-07 15:01:00,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69688 to 47350. [2021-10-07 15:01:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47350 states, 47335 states have (on average 4.688813774162882) internal successors, (221945), 47349 states have internal predecessors, (221945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47350 states to 47350 states and 221945 transitions. [2021-10-07 15:01:01,010 INFO L78 Accepts]: Start accepts. Automaton has 47350 states and 221945 transitions. Word has length 28 [2021-10-07 15:01:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:01,010 INFO L470 AbstractCegarLoop]: Abstraction has 47350 states and 221945 transitions. [2021-10-07 15:01:01,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 47350 states and 221945 transitions. [2021-10-07 15:01:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-07 15:01:01,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:01,051 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1] [2021-10-07 15:01:01,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:01,252 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,SelfDestructingSolverStorable56 [2021-10-07 15:01:01,253 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:01,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:01,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1750113743, now seen corresponding path program 24 times [2021-10-07 15:01:01,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:01,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966009169] [2021-10-07 15:01:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:01,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:01,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:01,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966009169] [2021-10-07 15:01:01,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966009169] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:01,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476030448] [2021-10-07 15:01:01,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:01:01,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:01,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:01,607 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:01,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-07 15:01:01,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-07 15:01:01,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:01,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:01:01,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:01,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476030448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:01,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:01,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-10-07 15:01:01,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418848676] [2021-10-07 15:01:01,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:01:01,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:01:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:01:01,983 INFO L87 Difference]: Start difference. First operand 47350 states and 221945 transitions. Second operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:04,204 INFO L93 Difference]: Finished difference Result 92312 states and 415422 transitions. [2021-10-07 15:01:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:01:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-07 15:01:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:04,936 INFO L225 Difference]: With dead ends: 92312 [2021-10-07 15:01:04,936 INFO L226 Difference]: Without dead ends: 86748 [2021-10-07 15:01:04,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 278.6ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:01:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86748 states. [2021-10-07 15:01:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86748 to 49076. [2021-10-07 15:01:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49076 states, 49061 states have (on average 4.690670797578525) internal successors, (230129), 49075 states have internal predecessors, (230129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49076 states to 49076 states and 230129 transitions. [2021-10-07 15:01:08,582 INFO L78 Accepts]: Start accepts. Automaton has 49076 states and 230129 transitions. Word has length 28 [2021-10-07 15:01:08,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:08,583 INFO L470 AbstractCegarLoop]: Abstraction has 49076 states and 230129 transitions. [2021-10-07 15:01:08,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 49076 states and 230129 transitions. [2021-10-07 15:01:08,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:01:08,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:08,717 INFO L512 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:08,792 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 [2021-10-07 15:01:08,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-07 15:01:08,921 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:08,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:08,921 INFO L82 PathProgramCache]: Analyzing trace with hash -610972633, now seen corresponding path program 21 times [2021-10-07 15:01:08,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:08,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594164960] [2021-10-07 15:01:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:08,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:09,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:09,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594164960] [2021-10-07 15:01:09,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594164960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:09,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769879852] [2021-10-07 15:01:09,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:01:09,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:09,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:09,264 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:09,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-07 15:01:09,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-07 15:01:09,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:09,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-07 15:01:09,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:09,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769879852] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:09,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:09,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2021-10-07 15:01:09,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773068108] [2021-10-07 15:01:09,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-07 15:01:09,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:09,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-07 15:01:09,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:01:09,807 INFO L87 Difference]: Start difference. First operand 49076 states and 230129 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:12,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:12,082 INFO L93 Difference]: Finished difference Result 80250 states and 375049 transitions. [2021-10-07 15:01:12,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 15:01:12,083 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-07 15:01:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:12,995 INFO L225 Difference]: With dead ends: 80250 [2021-10-07 15:01:12,996 INFO L226 Difference]: Without dead ends: 75364 [2021-10-07 15:01:12,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 233.1ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:01:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75364 states. [2021-10-07 15:01:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75364 to 51072. [2021-10-07 15:01:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51072 states, 51057 states have (on average 4.692422194801888) internal successors, (239581), 51071 states have internal predecessors, (239581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51072 states to 51072 states and 239581 transitions. [2021-10-07 15:01:16,699 INFO L78 Accepts]: Start accepts. Automaton has 51072 states and 239581 transitions. Word has length 29 [2021-10-07 15:01:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:16,700 INFO L470 AbstractCegarLoop]: Abstraction has 51072 states and 239581 transitions. [2021-10-07 15:01:16,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 51072 states and 239581 transitions. [2021-10-07 15:01:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:01:16,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:16,743 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1] [2021-10-07 15:01:16,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:16,944 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,SelfDestructingSolverStorable58 [2021-10-07 15:01:16,944 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:16,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1581052481, now seen corresponding path program 25 times [2021-10-07 15:01:16,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:16,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139275230] [2021-10-07 15:01:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:16,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:17,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:17,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139275230] [2021-10-07 15:01:17,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139275230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:17,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321625792] [2021-10-07 15:01:17,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:01:17,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:17,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:17,297 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:17,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-07 15:01:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:17,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:01:17,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:17,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321625792] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:17,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:17,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-10-07 15:01:17,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435521146] [2021-10-07 15:01:17,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:01:17,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:01:17,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:01:17,677 INFO L87 Difference]: Start difference. First operand 51072 states and 239581 transitions. Second operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:19,963 INFO L93 Difference]: Finished difference Result 99706 states and 449021 transitions. [2021-10-07 15:01:19,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:01:19,963 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-07 15:01:19,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:20,807 INFO L225 Difference]: With dead ends: 99706 [2021-10-07 15:01:20,807 INFO L226 Difference]: Without dead ends: 93658 [2021-10-07 15:01:20,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 282.9ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:01:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93658 states. [2021-10-07 15:01:23,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93658 to 52868. [2021-10-07 15:01:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52868 states, 52853 states have (on average 4.694151703782189) internal successors, (248100), 52867 states have internal predecessors, (248100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52868 states to 52868 states and 248100 transitions. [2021-10-07 15:01:24,352 INFO L78 Accepts]: Start accepts. Automaton has 52868 states and 248100 transitions. Word has length 29 [2021-10-07 15:01:24,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:24,352 INFO L470 AbstractCegarLoop]: Abstraction has 52868 states and 248100 transitions. [2021-10-07 15:01:24,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 52868 states and 248100 transitions. [2021-10-07 15:01:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-07 15:01:24,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:24,399 INFO L512 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:24,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:24,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:24,600 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:24,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1760280207, now seen corresponding path program 22 times [2021-10-07 15:01:24,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:24,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371378497] [2021-10-07 15:01:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:24,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:24,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:24,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371378497] [2021-10-07 15:01:24,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371378497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:24,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419922320] [2021-10-07 15:01:24,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:01:24,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:24,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:24,903 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:24,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-07 15:01:25,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:01:25,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:25,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:01:25,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:25,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419922320] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:25,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:25,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2021-10-07 15:01:25,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394595517] [2021-10-07 15:01:25,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 15:01:25,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 15:01:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:01:25,301 INFO L87 Difference]: Start difference. First operand 52868 states and 248100 transitions. Second operand has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:27,507 INFO L93 Difference]: Finished difference Result 86550 states and 404803 transitions. [2021-10-07 15:01:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:01:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 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 30 [2021-10-07 15:01:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:28,167 INFO L225 Difference]: With dead ends: 86550 [2021-10-07 15:01:28,168 INFO L226 Difference]: Without dead ends: 81260 [2021-10-07 15:01:28,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 241.7ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:01:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81260 states. [2021-10-07 15:01:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81260 to 54934. [2021-10-07 15:01:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54934 states, 54919 states have (on average 4.695770134197637) internal successors, (257887), 54933 states have internal predecessors, (257887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54934 states to 54934 states and 257887 transitions. [2021-10-07 15:01:31,583 INFO L78 Accepts]: Start accepts. Automaton has 54934 states and 257887 transitions. Word has length 30 [2021-10-07 15:01:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:31,584 INFO L470 AbstractCegarLoop]: Abstraction has 54934 states and 257887 transitions. [2021-10-07 15:01:31,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 54934 states and 257887 transitions. [2021-10-07 15:01:31,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-07 15:01:31,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:31,631 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1] [2021-10-07 15:01:31,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:31,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:31,832 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:31,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:31,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1767990321, now seen corresponding path program 26 times [2021-10-07 15:01:31,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:31,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984173329] [2021-10-07 15:01:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:31,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:32,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:32,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984173329] [2021-10-07 15:01:32,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984173329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:32,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801345430] [2021-10-07 15:01:32,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:01:32,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:32,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:32,224 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:32,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-07 15:01:32,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:01:32,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:32,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:01:32,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:32,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801345430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:32,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:32,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-10-07 15:01:32,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349229012] [2021-10-07 15:01:32,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:01:32,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:01:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:01:32,637 INFO L87 Difference]: Start difference. First operand 54934 states and 257887 transitions. Second operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:34,918 INFO L93 Difference]: Finished difference Result 107384 states and 483922 transitions. [2021-10-07 15:01:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:01:34,918 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-07 15:01:34,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:35,840 INFO L225 Difference]: With dead ends: 107384 [2021-10-07 15:01:35,841 INFO L226 Difference]: Without dead ends: 100832 [2021-10-07 15:01:35,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 314.2ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:01:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100832 states. [2021-10-07 15:01:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100832 to 56800. [2021-10-07 15:01:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56800 states, 56785 states have (on average 4.697384872765695) internal successors, (266741), 56799 states have internal predecessors, (266741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:40,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56800 states to 56800 states and 266741 transitions. [2021-10-07 15:01:40,065 INFO L78 Accepts]: Start accepts. Automaton has 56800 states and 266741 transitions. Word has length 30 [2021-10-07 15:01:40,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:40,066 INFO L470 AbstractCegarLoop]: Abstraction has 56800 states and 266741 transitions. [2021-10-07 15:01:40,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:40,066 INFO L276 IsEmpty]: Start isEmpty. Operand 56800 states and 266741 transitions. [2021-10-07 15:01:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-07 15:01:40,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:40,136 INFO L512 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:40,196 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 [2021-10-07 15:01:40,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:40,338 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:40,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1265890663, now seen corresponding path program 23 times [2021-10-07 15:01:40,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:40,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187385514] [2021-10-07 15:01:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:40,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:40,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:40,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187385514] [2021-10-07 15:01:40,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187385514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:40,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147417837] [2021-10-07 15:01:40,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:01:40,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:40,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:40,663 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:40,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-07 15:01:40,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-07 15:01:40,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:40,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-07 15:01:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:41,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147417837] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:41,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:41,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2021-10-07 15:01:41,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208570896] [2021-10-07 15:01:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 15:01:41,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 15:01:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:01:41,084 INFO L87 Difference]: Start difference. First operand 56800 states and 266741 transitions. Second operand has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:42,829 INFO L93 Difference]: Finished difference Result 93086 states and 435683 transitions. [2021-10-07 15:01:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 15:01:42,829 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 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 31 [2021-10-07 15:01:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:44,263 INFO L225 Difference]: With dead ends: 93086 [2021-10-07 15:01:44,263 INFO L226 Difference]: Without dead ends: 87376 [2021-10-07 15:01:44,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 253.3ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:01:44,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87376 states. [2021-10-07 15:01:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87376 to 58936. [2021-10-07 15:01:47,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58936 states, 58921 states have (on average 4.698884947641758) internal successors, (276863), 58935 states have internal predecessors, (276863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:48,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58936 states to 58936 states and 276863 transitions. [2021-10-07 15:01:48,184 INFO L78 Accepts]: Start accepts. Automaton has 58936 states and 276863 transitions. Word has length 31 [2021-10-07 15:01:48,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:48,188 INFO L470 AbstractCegarLoop]: Abstraction has 58936 states and 276863 transitions. [2021-10-07 15:01:48,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 58936 states and 276863 transitions. [2021-10-07 15:01:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-07 15:01:48,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:48,260 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1] [2021-10-07 15:01:48,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:48,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:48,473 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:48,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:48,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1026871231, now seen corresponding path program 27 times [2021-10-07 15:01:48,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:48,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142837129] [2021-10-07 15:01:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:48,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:48,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:48,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142837129] [2021-10-07 15:01:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142837129] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:48,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995920740] [2021-10-07 15:01:48,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:01:48,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:48,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:48,871 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:48,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-07 15:01:49,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-07 15:01:49,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:01:49,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:01:49,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:01:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:49,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995920740] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:49,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:01:49,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-10-07 15:01:49,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687099097] [2021-10-07 15:01:49,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:01:49,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:01:49,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:01:49,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:01:49,340 INFO L87 Difference]: Start difference. First operand 58936 states and 276863 transitions. Second operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:01:52,253 INFO L93 Difference]: Finished difference Result 115346 states and 520125 transitions. [2021-10-07 15:01:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:01:52,256 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 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 31 [2021-10-07 15:01:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:01:54,075 INFO L225 Difference]: With dead ends: 115346 [2021-10-07 15:01:54,076 INFO L226 Difference]: Without dead ends: 108270 [2021-10-07 15:01:54,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 324.1ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:01:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108270 states. [2021-10-07 15:01:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108270 to 60872. [2021-10-07 15:01:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60872 states, 60857 states have (on average 4.700396010319273) internal successors, (286052), 60871 states have internal predecessors, (286052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60872 states to 60872 states and 286052 transitions. [2021-10-07 15:01:59,140 INFO L78 Accepts]: Start accepts. Automaton has 60872 states and 286052 transitions. Word has length 31 [2021-10-07 15:01:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:01:59,140 INFO L470 AbstractCegarLoop]: Abstraction has 60872 states and 286052 transitions. [2021-10-07 15:01:59,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:01:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 60872 states and 286052 transitions. [2021-10-07 15:01:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-07 15:01:59,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:01:59,233 INFO L512 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:01:59,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-07 15:01:59,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:59,446 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:01:59,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:01:59,447 INFO L82 PathProgramCache]: Analyzing trace with hash 587907121, now seen corresponding path program 24 times [2021-10-07 15:01:59,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:01:59,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845780781] [2021-10-07 15:01:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:01:59,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:01:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:01:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:01:59,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:01:59,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845780781] [2021-10-07 15:01:59,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845780781] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:01:59,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219130803] [2021-10-07 15:01:59,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:01:59,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:01:59,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:01:59,783 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:01:59,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-07 15:02:00,131 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-07 15:02:00,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:00,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:02:00,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:00,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219130803] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:00,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:00,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2021-10-07 15:02:00,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969363712] [2021-10-07 15:02:00,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:02:00,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:00,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:02:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:02:00,235 INFO L87 Difference]: Start difference. First operand 60872 states and 286052 transitions. Second operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:02,220 INFO L93 Difference]: Finished difference Result 99858 states and 467689 transitions. [2021-10-07 15:02:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 15:02:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-07 15:02:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:03,702 INFO L225 Difference]: With dead ends: 99858 [2021-10-07 15:02:03,703 INFO L226 Difference]: Without dead ends: 93712 [2021-10-07 15:02:03,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 271.5ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:02:03,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93712 states. [2021-10-07 15:02:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93712 to 63078. [2021-10-07 15:02:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63078 states, 63063 states have (on average 4.701790273218845) internal successors, (296509), 63077 states have internal predecessors, (296509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63078 states to 63078 states and 296509 transitions. [2021-10-07 15:02:07,688 INFO L78 Accepts]: Start accepts. Automaton has 63078 states and 296509 transitions. Word has length 32 [2021-10-07 15:02:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:07,689 INFO L470 AbstractCegarLoop]: Abstraction has 63078 states and 296509 transitions. [2021-10-07 15:02:07,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 63078 states and 296509 transitions. [2021-10-07 15:02:07,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-07 15:02:07,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:07,750 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1] [2021-10-07 15:02:07,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-10-07 15:02:07,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-07 15:02:07,951 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:02:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:07,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1768233423, now seen corresponding path program 28 times [2021-10-07 15:02:07,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:07,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771881062] [2021-10-07 15:02:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:07,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:08,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:08,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771881062] [2021-10-07 15:02:08,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771881062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:08,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425038029] [2021-10-07 15:02:08,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:02:08,396 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:08,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:08,398 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:02:08,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-07 15:02:08,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:02:08,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:08,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:02:08,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:08,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425038029] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:08,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:08,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-10-07 15:02:08,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726126315] [2021-10-07 15:02:08,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:02:08,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:08,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:02:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:02:08,853 INFO L87 Difference]: Start difference. First operand 63078 states and 296509 transitions. Second operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:11,360 INFO L93 Difference]: Finished difference Result 123592 states and 557630 transitions. [2021-10-07 15:02:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:02:11,361 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 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 32 [2021-10-07 15:02:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:12,994 INFO L225 Difference]: With dead ends: 123592 [2021-10-07 15:02:12,994 INFO L226 Difference]: Without dead ends: 115972 [2021-10-07 15:02:13,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 364.7ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:02:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115972 states. [2021-10-07 15:02:16,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115972 to 65084. [2021-10-07 15:02:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65084 states, 65069 states have (on average 4.7032073644900025) internal successors, (306033), 65083 states have internal predecessors, (306033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65084 states to 65084 states and 306033 transitions. [2021-10-07 15:02:17,298 INFO L78 Accepts]: Start accepts. Automaton has 65084 states and 306033 transitions. Word has length 32 [2021-10-07 15:02:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:17,299 INFO L470 AbstractCegarLoop]: Abstraction has 65084 states and 306033 transitions. [2021-10-07 15:02:17,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 65084 states and 306033 transitions. [2021-10-07 15:02:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 15:02:17,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:17,359 INFO L512 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:17,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-10-07 15:02:17,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:17,574 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:02:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1045253799, now seen corresponding path program 25 times [2021-10-07 15:02:17,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:17,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372505788] [2021-10-07 15:02:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:17,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:18,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:18,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372505788] [2021-10-07 15:02:18,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372505788] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:18,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703910974] [2021-10-07 15:02:18,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:02:18,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:18,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:18,638 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:02:18,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-07 15:02:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:18,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-07 15:02:18,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:19,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703910974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:19,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:19,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2021-10-07 15:02:19,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521839625] [2021-10-07 15:02:19,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-07 15:02:19,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:19,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-07 15:02:19,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:02:19,067 INFO L87 Difference]: Start difference. First operand 65084 states and 306033 transitions. Second operand has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:20,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:20,837 INFO L93 Difference]: Finished difference Result 106866 states and 500821 transitions. [2021-10-07 15:02:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:02:20,837 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 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 33 [2021-10-07 15:02:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:22,412 INFO L225 Difference]: With dead ends: 106866 [2021-10-07 15:02:22,412 INFO L226 Difference]: Without dead ends: 100268 [2021-10-07 15:02:22,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 335.0ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-07 15:02:22,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100268 states. [2021-10-07 15:02:25,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100268 to 67360. [2021-10-07 15:02:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67360 states, 67345 states have (on average 4.704506644888262) internal successors, (316825), 67359 states have internal predecessors, (316825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67360 states to 67360 states and 316825 transitions. [2021-10-07 15:02:26,689 INFO L78 Accepts]: Start accepts. Automaton has 67360 states and 316825 transitions. Word has length 33 [2021-10-07 15:02:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:26,689 INFO L470 AbstractCegarLoop]: Abstraction has 67360 states and 316825 transitions. [2021-10-07 15:02:26,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 67360 states and 316825 transitions. [2021-10-07 15:02:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-07 15:02:26,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:26,750 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1] [2021-10-07 15:02:26,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-10-07 15:02:26,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-07 15:02:26,952 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:02:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:26,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1019342401, now seen corresponding path program 29 times [2021-10-07 15:02:26,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:26,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232750454] [2021-10-07 15:02:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:26,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:27,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:27,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232750454] [2021-10-07 15:02:27,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232750454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:27,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594833419] [2021-10-07 15:02:27,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:02:27,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:27,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:27,426 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:02:27,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-07 15:02:28,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-07 15:02:28,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:28,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:02:28,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:28,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594833419] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:28,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:28,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-10-07 15:02:28,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423017647] [2021-10-07 15:02:28,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:02:28,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:02:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:02:28,471 INFO L87 Difference]: Start difference. First operand 67360 states and 316825 transitions. Second operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:31,295 INFO L93 Difference]: Finished difference Result 132122 states and 596437 transitions. [2021-10-07 15:02:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:02:31,297 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 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 33 [2021-10-07 15:02:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:32,476 INFO L225 Difference]: With dead ends: 132122 [2021-10-07 15:02:32,476 INFO L226 Difference]: Without dead ends: 123938 [2021-10-07 15:02:32,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 388.8ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:02:32,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123938 states. [2021-10-07 15:02:36,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123938 to 69436. [2021-10-07 15:02:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69436 states, 69421 states have (on average 4.705838291007044) internal successors, (326684), 69435 states have internal predecessors, (326684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69436 states to 69436 states and 326684 transitions. [2021-10-07 15:02:37,892 INFO L78 Accepts]: Start accepts. Automaton has 69436 states and 326684 transitions. Word has length 33 [2021-10-07 15:02:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:37,893 INFO L470 AbstractCegarLoop]: Abstraction has 69436 states and 326684 transitions. [2021-10-07 15:02:37,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 69436 states and 326684 transitions. [2021-10-07 15:02:37,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:02:37,985 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:37,985 INFO L512 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:02:38,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-10-07 15:02:38,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-10-07 15:02:38,186 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:02:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1956868367, now seen corresponding path program 26 times [2021-10-07 15:02:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:38,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477111271] [2021-10-07 15:02:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:38,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:38,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:38,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477111271] [2021-10-07 15:02:38,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477111271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:38,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139942823] [2021-10-07 15:02:38,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:02:38,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:38,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:38,582 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:02:38,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-07 15:02:38,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:02:38,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:38,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:02:38,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:39,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139942823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:39,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:39,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2021-10-07 15:02:39,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115495956] [2021-10-07 15:02:39,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-07 15:02:39,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-07 15:02:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:02:39,073 INFO L87 Difference]: Start difference. First operand 69436 states and 326684 transitions. Second operand has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:42,466 INFO L93 Difference]: Finished difference Result 114110 states and 535079 transitions. [2021-10-07 15:02:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-07 15:02:42,467 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 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 34 [2021-10-07 15:02:42,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:44,283 INFO L225 Difference]: With dead ends: 114110 [2021-10-07 15:02:44,284 INFO L226 Difference]: Without dead ends: 107044 [2021-10-07 15:02:44,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 324.9ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-07 15:02:44,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107044 states. [2021-10-07 15:02:48,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107044 to 71782. [2021-10-07 15:02:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71782 states, 71767 states have (on average 4.707051987682361) internal successors, (337811), 71781 states have internal predecessors, (337811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71782 states to 71782 states and 337811 transitions. [2021-10-07 15:02:49,633 INFO L78 Accepts]: Start accepts. Automaton has 71782 states and 337811 transitions. Word has length 34 [2021-10-07 15:02:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:02:49,633 INFO L470 AbstractCegarLoop]: Abstraction has 71782 states and 337811 transitions. [2021-10-07 15:02:49,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 29 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 71782 states and 337811 transitions. [2021-10-07 15:02:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-07 15:02:49,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:02:49,739 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1] [2021-10-07 15:02:49,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-07 15:02:49,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:49,940 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:02:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:02:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1534847025, now seen corresponding path program 30 times [2021-10-07 15:02:49,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:02:49,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103064437] [2021-10-07 15:02:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:02:49,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:02:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:02:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:50,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:02:50,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103064437] [2021-10-07 15:02:50,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103064437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:50,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710222177] [2021-10-07 15:02:50,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:02:50,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:02:50,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:02:50,487 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:02:50,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-07 15:02:50,893 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-07 15:02:50,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:02:50,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:02:50,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:02:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:02:50,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710222177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:02:50,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:02:50,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-10-07 15:02:50,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681283411] [2021-10-07 15:02:50,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-07 15:02:50,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:02:50,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-07 15:02:50,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:02:50,999 INFO L87 Difference]: Start difference. First operand 71782 states and 337811 transitions. Second operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:02:53,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:02:53,852 INFO L93 Difference]: Finished difference Result 140936 states and 636546 transitions. [2021-10-07 15:02:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:02:53,853 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 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 34 [2021-10-07 15:02:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:02:55,785 INFO L225 Difference]: With dead ends: 140936 [2021-10-07 15:02:55,785 INFO L226 Difference]: Without dead ends: 132168 [2021-10-07 15:02:55,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 462.8ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:02:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132168 states. [2021-10-07 15:03:00,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132168 to 73928. [2021-10-07 15:03:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73928 states, 73913 states have (on average 4.708305710768065) internal successors, (348005), 73927 states have internal predecessors, (348005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73928 states to 73928 states and 348005 transitions. [2021-10-07 15:03:01,556 INFO L78 Accepts]: Start accepts. Automaton has 73928 states and 348005 transitions. Word has length 34 [2021-10-07 15:03:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:01,556 INFO L470 AbstractCegarLoop]: Abstraction has 73928 states and 348005 transitions. [2021-10-07 15:03:01,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 73928 states and 348005 transitions. [2021-10-07 15:03:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:03:01,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:01,649 INFO L512 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:01,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-10-07 15:03:01,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-07 15:03:01,850 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:03:01,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:01,851 INFO L82 PathProgramCache]: Analyzing trace with hash -533375001, now seen corresponding path program 27 times [2021-10-07 15:03:01,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:01,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765591623] [2021-10-07 15:03:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:01,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:02,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:02,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765591623] [2021-10-07 15:03:02,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765591623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:02,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586323825] [2021-10-07 15:03:02,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:03:02,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:02,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:02,272 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:03:02,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-07 15:03:02,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-10-07 15:03:02,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:02,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-07 15:03:02,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:02,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586323825] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:02,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:02,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2021-10-07 15:03:02,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995139127] [2021-10-07 15:03:02,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 15:03:02,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 15:03:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:03:02,850 INFO L87 Difference]: Start difference. First operand 73928 states and 348005 transitions. Second operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:05,494 INFO L93 Difference]: Finished difference Result 121590 states and 570463 transitions. [2021-10-07 15:03:05,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 15:03:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 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 35 [2021-10-07 15:03:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:07,245 INFO L225 Difference]: With dead ends: 121590 [2021-10-07 15:03:07,245 INFO L226 Difference]: Without dead ends: 114040 [2021-10-07 15:03:07,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 356.1ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:03:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114040 states. [2021-10-07 15:03:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114040 to 76344. [2021-10-07 15:03:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76344 states, 76329 states have (on average 4.709442020726067) internal successors, (359467), 76343 states have internal predecessors, (359467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:12,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76344 states to 76344 states and 359467 transitions. [2021-10-07 15:03:12,491 INFO L78 Accepts]: Start accepts. Automaton has 76344 states and 359467 transitions. Word has length 35 [2021-10-07 15:03:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:12,491 INFO L470 AbstractCegarLoop]: Abstraction has 76344 states and 359467 transitions. [2021-10-07 15:03:12,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 76344 states and 359467 transitions. [2021-10-07 15:03:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-07 15:03:12,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:12,607 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1] [2021-10-07 15:03:12,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-10-07 15:03:12,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-10-07 15:03:12,808 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:03:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:12,808 INFO L82 PathProgramCache]: Analyzing trace with hash 335621185, now seen corresponding path program 31 times [2021-10-07 15:03:12,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:12,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12103512] [2021-10-07 15:03:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:12,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:13,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:13,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12103512] [2021-10-07 15:03:13,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12103512] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:13,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536952728] [2021-10-07 15:03:13,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:03:13,341 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:13,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:13,343 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:03:13,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-07 15:03:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:13,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:03:13,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:13,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536952728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:13,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:13,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-10-07 15:03:13,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847460427] [2021-10-07 15:03:13,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:03:13,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:13,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:03:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:03:13,878 INFO L87 Difference]: Start difference. First operand 76344 states and 359467 transitions. Second operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:16,770 INFO L93 Difference]: Finished difference Result 150034 states and 677957 transitions. [2021-10-07 15:03:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:03:16,770 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 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 35 [2021-10-07 15:03:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:18,914 INFO L225 Difference]: With dead ends: 150034 [2021-10-07 15:03:18,914 INFO L226 Difference]: Without dead ends: 140662 [2021-10-07 15:03:18,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 450.9ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:03:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140662 states. [2021-10-07 15:03:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140662 to 78560. [2021-10-07 15:03:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78560 states, 78545 states have (on average 4.710624482780571) internal successors, (369996), 78559 states have internal predecessors, (369996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78560 states to 78560 states and 369996 transitions. [2021-10-07 15:03:24,981 INFO L78 Accepts]: Start accepts. Automaton has 78560 states and 369996 transitions. Word has length 35 [2021-10-07 15:03:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:24,981 INFO L470 AbstractCegarLoop]: Abstraction has 78560 states and 369996 transitions. [2021-10-07 15:03:24,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 78560 states and 369996 transitions. [2021-10-07 15:03:25,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:03:25,800 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:25,800 INFO L512 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:25,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-07 15:03:26,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:26,015 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:03:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash 645246385, now seen corresponding path program 28 times [2021-10-07 15:03:26,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:26,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693898900] [2021-10-07 15:03:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:26,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:26,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:26,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693898900] [2021-10-07 15:03:26,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693898900] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:26,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379255171] [2021-10-07 15:03:26,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:03:26,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:26,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:26,491 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:03:26,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-07 15:03:26,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:03:26,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:26,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-07 15:03:26,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:26,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379255171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:26,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:26,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2021-10-07 15:03:26,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47182669] [2021-10-07 15:03:26,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:03:26,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:26,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:03:26,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:03:26,990 INFO L87 Difference]: Start difference. First operand 78560 states and 369996 transitions. Second operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 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) [2021-10-07 15:03:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:30,177 INFO L93 Difference]: Finished difference Result 129306 states and 606973 transitions. [2021-10-07 15:03:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 15:03:30,178 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 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 36 [2021-10-07 15:03:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:32,436 INFO L225 Difference]: With dead ends: 129306 [2021-10-07 15:03:32,436 INFO L226 Difference]: Without dead ends: 121256 [2021-10-07 15:03:32,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 397.3ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:03:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121256 states. [2021-10-07 15:03:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121256 to 81046. [2021-10-07 15:03:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81046 states, 81031 states have (on average 4.711690587552912) internal successors, (381793), 81045 states have internal predecessors, (381793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81046 states to 81046 states and 381793 transitions. [2021-10-07 15:03:39,307 INFO L78 Accepts]: Start accepts. Automaton has 81046 states and 381793 transitions. Word has length 36 [2021-10-07 15:03:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:39,308 INFO L470 AbstractCegarLoop]: Abstraction has 81046 states and 381793 transitions. [2021-10-07 15:03:39,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 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) [2021-10-07 15:03:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 81046 states and 381793 transitions. [2021-10-07 15:03:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-07 15:03:39,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:39,395 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1] [2021-10-07 15:03:39,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-07 15:03:39,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:39,595 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:03:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1814325809, now seen corresponding path program 32 times [2021-10-07 15:03:39,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:39,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207319941] [2021-10-07 15:03:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:39,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:40,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:40,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207319941] [2021-10-07 15:03:40,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207319941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:40,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665213248] [2021-10-07 15:03:40,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:03:40,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:40,140 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:03:40,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-07 15:03:41,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:03:41,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:41,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:03:41,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:41,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665213248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:41,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:41,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-10-07 15:03:41,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668869970] [2021-10-07 15:03:41,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-07 15:03:41,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-07 15:03:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:03:41,345 INFO L87 Difference]: Start difference. First operand 81046 states and 381793 transitions. Second operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:44,491 INFO L93 Difference]: Finished difference Result 159416 states and 720670 transitions. [2021-10-07 15:03:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:03:44,491 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-07 15:03:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:46,725 INFO L225 Difference]: With dead ends: 159416 [2021-10-07 15:03:46,726 INFO L226 Difference]: Without dead ends: 149420 [2021-10-07 15:03:46,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 458.5ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:03:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149420 states. [2021-10-07 15:03:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149420 to 83332. [2021-10-07 15:03:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83332 states, 83317 states have (on average 4.712807710311221) internal successors, (392657), 83331 states have internal predecessors, (392657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83332 states to 83332 states and 392657 transitions. [2021-10-07 15:03:52,744 INFO L78 Accepts]: Start accepts. Automaton has 83332 states and 392657 transitions. Word has length 36 [2021-10-07 15:03:52,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:03:52,744 INFO L470 AbstractCegarLoop]: Abstraction has 83332 states and 392657 transitions. [2021-10-07 15:03:52,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:03:52,745 INFO L276 IsEmpty]: Start isEmpty. Operand 83332 states and 392657 transitions. [2021-10-07 15:03:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-07 15:03:52,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:03:52,837 INFO L512 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:03:52,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-07 15:03:53,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-10-07 15:03:53,051 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:03:53,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:03:53,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1472196313, now seen corresponding path program 29 times [2021-10-07 15:03:53,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:03:53,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174609164] [2021-10-07 15:03:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:03:53,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:03:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:03:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:54,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:03:54,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174609164] [2021-10-07 15:03:54,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174609164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:54,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096138374] [2021-10-07 15:03:54,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:03:54,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:03:54,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:03:54,155 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:03:54,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-07 15:03:54,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-07 15:03:54,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:03:54,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-07 15:03:54,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:03:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:03:54,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096138374] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:03:54,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:03:54,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2021-10-07 15:03:54,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893372085] [2021-10-07 15:03:54,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-07 15:03:54,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:03:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-07 15:03:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:03:54,719 INFO L87 Difference]: Start difference. First operand 83332 states and 392657 transitions. Second operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 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) [2021-10-07 15:03:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:03:57,505 INFO L93 Difference]: Finished difference Result 137258 states and 644609 transitions. [2021-10-07 15:03:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:03:57,505 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 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 37 [2021-10-07 15:03:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:03:58,766 INFO L225 Difference]: With dead ends: 137258 [2021-10-07 15:03:58,766 INFO L226 Difference]: Without dead ends: 128692 [2021-10-07 15:03:58,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 383.4ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:03:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128692 states. [2021-10-07 15:04:03,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128692 to 85888. [2021-10-07 15:04:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85888 states, 85873 states have (on average 4.713809928615514) internal successors, (404789), 85887 states have internal predecessors, (404789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85888 states to 85888 states and 404789 transitions. [2021-10-07 15:04:04,728 INFO L78 Accepts]: Start accepts. Automaton has 85888 states and 404789 transitions. Word has length 37 [2021-10-07 15:04:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:04,728 INFO L470 AbstractCegarLoop]: Abstraction has 85888 states and 404789 transitions. [2021-10-07 15:04:04,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 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) [2021-10-07 15:04:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 85888 states and 404789 transitions. [2021-10-07 15:04:04,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-07 15:04:04,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:04,864 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1] [2021-10-07 15:04:04,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-07 15:04:05,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:05,065 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:04:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash 409528897, now seen corresponding path program 33 times [2021-10-07 15:04:05,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:05,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117270559] [2021-10-07 15:04:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:05,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:05,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:05,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117270559] [2021-10-07 15:04:05,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117270559] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:05,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105235373] [2021-10-07 15:04:05,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:04:05,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:05,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:05,641 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:04:05,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-07 15:04:06,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-07 15:04:06,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:06,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:04:06,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:06,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105235373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:06,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:06,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-10-07 15:04:06,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129787823] [2021-10-07 15:04:06,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:04:06,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:04:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:04:06,246 INFO L87 Difference]: Start difference. First operand 85888 states and 404789 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:10,044 INFO L93 Difference]: Finished difference Result 169082 states and 764685 transitions. [2021-10-07 15:04:10,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:04:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-07 15:04:10,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:12,336 INFO L225 Difference]: With dead ends: 169082 [2021-10-07 15:04:12,336 INFO L226 Difference]: Without dead ends: 158442 [2021-10-07 15:04:12,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 486.2ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:04:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158442 states. [2021-10-07 15:04:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158442 to 88244. [2021-10-07 15:04:18,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88244 states, 88229 states have (on average 4.714866993845561) internal successors, (415988), 88243 states have internal predecessors, (415988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88244 states to 88244 states and 415988 transitions. [2021-10-07 15:04:19,928 INFO L78 Accepts]: Start accepts. Automaton has 88244 states and 415988 transitions. Word has length 37 [2021-10-07 15:04:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:19,928 INFO L470 AbstractCegarLoop]: Abstraction has 88244 states and 415988 transitions. [2021-10-07 15:04:19,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 88244 states and 415988 transitions. [2021-10-07 15:04:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-07 15:04:20,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:20,212 INFO L512 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:20,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-07 15:04:20,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:20,413 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:04:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:20,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1606556785, now seen corresponding path program 30 times [2021-10-07 15:04:20,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:20,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494081786] [2021-10-07 15:04:20,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:20,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:20,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:20,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494081786] [2021-10-07 15:04:20,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494081786] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:20,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802984197] [2021-10-07 15:04:20,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:04:20,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:20,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:20,999 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:04:21,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-07 15:04:21,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-10-07 15:04:21,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:21,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-07 15:04:21,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:21,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802984197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:21,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:21,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2021-10-07 15:04:21,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143237836] [2021-10-07 15:04:21,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-07 15:04:21,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:21,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-07 15:04:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:04:21,595 INFO L87 Difference]: Start difference. First operand 88244 states and 415988 transitions. Second operand has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:26,120 INFO L93 Difference]: Finished difference Result 145446 states and 683371 transitions. [2021-10-07 15:04:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:04:26,121 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-07 15:04:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:28,603 INFO L225 Difference]: With dead ends: 145446 [2021-10-07 15:04:28,603 INFO L226 Difference]: Without dead ends: 136348 [2021-10-07 15:04:28,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 396.5ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:04:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136348 states. [2021-10-07 15:04:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136348 to 90870. [2021-10-07 15:04:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90870 states, 90855 states have (on average 4.715810907489956) internal successors, (428455), 90869 states have internal predecessors, (428455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90870 states to 90870 states and 428455 transitions. [2021-10-07 15:04:36,445 INFO L78 Accepts]: Start accepts. Automaton has 90870 states and 428455 transitions. Word has length 38 [2021-10-07 15:04:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:36,445 INFO L470 AbstractCegarLoop]: Abstraction has 90870 states and 428455 transitions. [2021-10-07 15:04:36,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.393939393939394) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 90870 states and 428455 transitions. [2021-10-07 15:04:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-07 15:04:36,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:36,593 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1] [2021-10-07 15:04:36,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-07 15:04:36,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-10-07 15:04:36,794 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:04:36,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash -189502415, now seen corresponding path program 34 times [2021-10-07 15:04:36,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:36,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936944606] [2021-10-07 15:04:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:36,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:37,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:37,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936944606] [2021-10-07 15:04:37,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936944606] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:37,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380696607] [2021-10-07 15:04:37,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:04:37,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:37,402 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:04:37,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-07 15:04:37,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:04:37,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:04:37,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:04:37,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:37,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380696607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:37,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:37,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-10-07 15:04:37,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850860521] [2021-10-07 15:04:37,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:04:37,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:04:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:04:37,992 INFO L87 Difference]: Start difference. First operand 90870 states and 428455 transitions. Second operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:42,130 INFO L93 Difference]: Finished difference Result 179032 states and 810002 transitions. [2021-10-07 15:04:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:04:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 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 38 [2021-10-07 15:04:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:44,526 INFO L225 Difference]: With dead ends: 179032 [2021-10-07 15:04:44,527 INFO L226 Difference]: Without dead ends: 167728 [2021-10-07 15:04:44,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 518.7ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:04:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167728 states. [2021-10-07 15:04:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167728 to 93296. [2021-10-07 15:04:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93296 states, 93281 states have (on average 4.716812641373913) internal successors, (439989), 93295 states have internal predecessors, (439989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93296 states to 93296 states and 439989 transitions. [2021-10-07 15:04:52,034 INFO L78 Accepts]: Start accepts. Automaton has 93296 states and 439989 transitions. Word has length 38 [2021-10-07 15:04:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:04:52,034 INFO L470 AbstractCegarLoop]: Abstraction has 93296 states and 439989 transitions. [2021-10-07 15:04:52,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:04:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 93296 states and 439989 transitions. [2021-10-07 15:04:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-07 15:04:52,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:04:52,157 INFO L512 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:04:52,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-07 15:04:52,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:52,358 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:04:52,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:04:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1736344985, now seen corresponding path program 31 times [2021-10-07 15:04:52,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:04:52,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339607349] [2021-10-07 15:04:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:04:52,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:04:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:53,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:04:53,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339607349] [2021-10-07 15:04:53,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339607349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:53,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154623773] [2021-10-07 15:04:53,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:04:53,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:04:53,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:04:53,578 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:04:53,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-07 15:04:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:04:54,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 15:04:54,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:04:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:04:54,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154623773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:04:54,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:04:54,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2021-10-07 15:04:54,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803988448] [2021-10-07 15:04:54,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-07 15:04:54,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:04:54,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-07 15:04:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:04:54,188 INFO L87 Difference]: Start difference. First operand 93296 states and 439989 transitions. Second operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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) [2021-10-07 15:04:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:04:57,268 INFO L93 Difference]: Finished difference Result 153870 states and 723259 transitions. [2021-10-07 15:04:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 15:04:57,269 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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 39 [2021-10-07 15:04:57,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:04:59,834 INFO L225 Difference]: With dead ends: 153870 [2021-10-07 15:04:59,837 INFO L226 Difference]: Without dead ends: 144224 [2021-10-07 15:04:59,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 471.8ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:05:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144224 states. [2021-10-07 15:05:06,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144224 to 95992. [2021-10-07 15:05:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95992 states, 95977 states have (on average 4.717703199724934) internal successors, (452791), 95991 states have internal predecessors, (452791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:09,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95992 states to 95992 states and 452791 transitions. [2021-10-07 15:05:09,296 INFO L78 Accepts]: Start accepts. Automaton has 95992 states and 452791 transitions. Word has length 39 [2021-10-07 15:05:09,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:09,296 INFO L470 AbstractCegarLoop]: Abstraction has 95992 states and 452791 transitions. [2021-10-07 15:05:09,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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) [2021-10-07 15:05:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 95992 states and 452791 transitions. [2021-10-07 15:05:09,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-07 15:05:09,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:09,588 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1] [2021-10-07 15:05:09,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-07 15:05:09,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-07 15:05:09,804 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:05:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:09,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1579603903, now seen corresponding path program 35 times [2021-10-07 15:05:09,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:09,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72950325] [2021-10-07 15:05:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:09,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:10,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:10,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72950325] [2021-10-07 15:05:10,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72950325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:10,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576913354] [2021-10-07 15:05:10,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:05:10,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:10,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:10,465 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:05:10,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-07 15:05:10,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-07 15:05:10,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:10,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:05:10,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:11,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576913354] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:11,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:11,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-10-07 15:05:11,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989879272] [2021-10-07 15:05:11,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-07 15:05:11,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-07 15:05:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:05:11,084 INFO L87 Difference]: Start difference. First operand 95992 states and 452791 transitions. Second operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:15,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:15,184 INFO L93 Difference]: Finished difference Result 189266 states and 856621 transitions. [2021-10-07 15:05:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:05:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 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 39 [2021-10-07 15:05:15,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:17,802 INFO L225 Difference]: With dead ends: 189266 [2021-10-07 15:05:17,802 INFO L226 Difference]: Without dead ends: 177278 [2021-10-07 15:05:17,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 565.6ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:05:18,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177278 states. [2021-10-07 15:05:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177278 to 98488. [2021-10-07 15:05:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98488 states, 98473 states have (on average 4.718653844200949) internal successors, (464660), 98487 states have internal predecessors, (464660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98488 states to 98488 states and 464660 transitions. [2021-10-07 15:05:25,726 INFO L78 Accepts]: Start accepts. Automaton has 98488 states and 464660 transitions. Word has length 39 [2021-10-07 15:05:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:25,726 INFO L470 AbstractCegarLoop]: Abstraction has 98488 states and 464660 transitions. [2021-10-07 15:05:25,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:25,726 INFO L276 IsEmpty]: Start isEmpty. Operand 98488 states and 464660 transitions. [2021-10-07 15:05:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-07 15:05:25,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:25,851 INFO L512 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:05:25,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-10-07 15:05:26,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:26,053 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:05:26,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:26,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2007882545, now seen corresponding path program 32 times [2021-10-07 15:05:26,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:26,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323579088] [2021-10-07 15:05:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:26,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:27,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:27,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323579088] [2021-10-07 15:05:27,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323579088] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:27,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348412068] [2021-10-07 15:05:27,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:05:27,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:27,192 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:05:27,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-07 15:05:27,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:05:27,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:27,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-07 15:05:27,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:27,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348412068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:27,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:27,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2021-10-07 15:05:27,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737005864] [2021-10-07 15:05:27,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-07 15:05:27,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-07 15:05:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:05:27,838 INFO L87 Difference]: Start difference. First operand 98488 states and 464660 transitions. Second operand has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:30,995 INFO L93 Difference]: Finished difference Result 162530 states and 764273 transitions. [2021-10-07 15:05:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:05:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-07 15:05:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:33,327 INFO L225 Difference]: With dead ends: 162530 [2021-10-07 15:05:33,327 INFO L226 Difference]: Without dead ends: 152320 [2021-10-07 15:05:33,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 462.7ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 15:05:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152320 states. [2021-10-07 15:05:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152320 to 101254. [2021-10-07 15:05:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101254 states, 101239 states have (on average 4.719495451357679) internal successors, (477797), 101253 states have internal predecessors, (477797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101254 states to 101254 states and 477797 transitions. [2021-10-07 15:05:41,096 INFO L78 Accepts]: Start accepts. Automaton has 101254 states and 477797 transitions. Word has length 40 [2021-10-07 15:05:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:05:41,097 INFO L470 AbstractCegarLoop]: Abstraction has 101254 states and 477797 transitions. [2021-10-07 15:05:41,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 101254 states and 477797 transitions. [2021-10-07 15:05:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-07 15:05:41,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:05:41,927 INFO L512 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1] [2021-10-07 15:05:41,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-10-07 15:05:42,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:42,141 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:05:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:05:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1723077071, now seen corresponding path program 36 times [2021-10-07 15:05:42,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:05:42,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165327864] [2021-10-07 15:05:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:05:42,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:05:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:05:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:42,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:05:42,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165327864] [2021-10-07 15:05:42,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165327864] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:42,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629938123] [2021-10-07 15:05:42,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:05:42,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:05:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:05:42,807 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:05:42,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-07 15:05:43,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-07 15:05:43,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:05:43,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-07 15:05:43,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:05:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:05:43,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629938123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:05:43,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:05:43,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-10-07 15:05:43,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780250822] [2021-10-07 15:05:43,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-07 15:05:43,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:05:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-07 15:05:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:05:43,466 INFO L87 Difference]: Start difference. First operand 101254 states and 477797 transitions. Second operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:05:49,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:05:49,547 INFO L93 Difference]: Finished difference Result 199784 states and 904542 transitions. [2021-10-07 15:05:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-07 15:05:49,547 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 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 40 [2021-10-07 15:05:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:05:52,924 INFO L225 Difference]: With dead ends: 199784 [2021-10-07 15:05:52,925 INFO L226 Difference]: Without dead ends: 187092 [2021-10-07 15:05:52,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 570.4ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:05:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187092 states. [2021-10-07 15:05:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187092 to 103820. [2021-10-07 15:05:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103820 states, 103805 states have (on average 4.7203988247194255) internal successors, (490001), 103819 states have internal predecessors, (490001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103820 states to 103820 states and 490001 transitions. [2021-10-07 15:06:01,147 INFO L78 Accepts]: Start accepts. Automaton has 103820 states and 490001 transitions. Word has length 40 [2021-10-07 15:06:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:01,147 INFO L470 AbstractCegarLoop]: Abstraction has 103820 states and 490001 transitions. [2021-10-07 15:06:01,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 103820 states and 490001 transitions. [2021-10-07 15:06:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-07 15:06:02,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:02,002 INFO L512 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:02,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-07 15:06:02,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:02,217 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:06:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2114818983, now seen corresponding path program 33 times [2021-10-07 15:06:02,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:02,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558578372] [2021-10-07 15:06:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:02,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:02,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:02,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558578372] [2021-10-07 15:06:02,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558578372] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:02,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786135853] [2021-10-07 15:06:02,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:06:02,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:02,817 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:02,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-07 15:06:03,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-10-07 15:06:03,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:03,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 15:06:03,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:03,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786135853] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:03,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:03,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2021-10-07 15:06:03,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257116356] [2021-10-07 15:06:03,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-07 15:06:03,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-07 15:06:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:06:03,520 INFO L87 Difference]: Start difference. First operand 103820 states and 490001 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) [2021-10-07 15:06:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:07,502 INFO L93 Difference]: Finished difference Result 171426 states and 806413 transitions. [2021-10-07 15:06:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-07 15:06:07,502 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 41 [2021-10-07 15:06:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:09,201 INFO L225 Difference]: With dead ends: 171426 [2021-10-07 15:06:09,202 INFO L226 Difference]: Without dead ends: 160636 [2021-10-07 15:06:09,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 516.9ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-07 15:06:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160636 states. [2021-10-07 15:06:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160636 to 106656. [2021-10-07 15:06:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106656 states, 106641 states have (on average 4.721195412646168) internal successors, (503473), 106655 states have internal predecessors, (503473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106656 states to 106656 states and 503473 transitions. [2021-10-07 15:06:18,087 INFO L78 Accepts]: Start accepts. Automaton has 106656 states and 503473 transitions. Word has length 41 [2021-10-07 15:06:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:18,088 INFO L470 AbstractCegarLoop]: Abstraction has 106656 states and 503473 transitions. [2021-10-07 15:06:18,088 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) [2021-10-07 15:06:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 106656 states and 503473 transitions. [2021-10-07 15:06:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-07 15:06:18,268 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:18,268 INFO L512 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1] [2021-10-07 15:06:18,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:18,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:18,469 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:06:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:18,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1875777983, now seen corresponding path program 37 times [2021-10-07 15:06:18,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:18,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721641737] [2021-10-07 15:06:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:18,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:19,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:19,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721641737] [2021-10-07 15:06:19,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721641737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:19,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167500600] [2021-10-07 15:06:19,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:06:19,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:19,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:19,264 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:19,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-07 15:06:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:19,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-07 15:06:19,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:19,995 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:19,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167500600] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:19,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:19,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-10-07 15:06:19,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217763493] [2021-10-07 15:06:19,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-07 15:06:19,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-07 15:06:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:06:19,998 INFO L87 Difference]: Start difference. First operand 106656 states and 503473 transitions. Second operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:25,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:25,035 INFO L93 Difference]: Finished difference Result 210586 states and 953765 transitions. [2021-10-07 15:06:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 15:06:25,036 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 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 41 [2021-10-07 15:06:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:28,094 INFO L225 Difference]: With dead ends: 210586 [2021-10-07 15:06:28,095 INFO L226 Difference]: Without dead ends: 197170 [2021-10-07 15:06:28,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 696.6ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:06:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197170 states. [2021-10-07 15:06:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197170 to 109292. [2021-10-07 15:06:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109292 states, 109277 states have (on average 4.722054961245275) internal successors, (516012), 109291 states have internal predecessors, (516012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109292 states to 109292 states and 516012 transitions. [2021-10-07 15:06:38,646 INFO L78 Accepts]: Start accepts. Automaton has 109292 states and 516012 transitions. Word has length 41 [2021-10-07 15:06:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:38,646 INFO L470 AbstractCegarLoop]: Abstraction has 109292 states and 516012 transitions. [2021-10-07 15:06:38,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 109292 states and 516012 transitions. [2021-10-07 15:06:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 15:06:38,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:38,950 INFO L512 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:06:38,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:39,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:39,164 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:06:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:39,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1134881265, now seen corresponding path program 34 times [2021-10-07 15:06:39,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:39,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289029426] [2021-10-07 15:06:39,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:39,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:06:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:39,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:06:39,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289029426] [2021-10-07 15:06:39,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289029426] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:39,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362854237] [2021-10-07 15:06:39,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:06:39,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:06:39,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:06:39,896 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:06:39,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-07 15:06:40,518 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:06:40,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:06:40,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-07 15:06:40,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:06:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:06:40,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362854237] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:06:40,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:06:40,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2021-10-07 15:06:40,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949245704] [2021-10-07 15:06:40,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-07 15:06:40,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:06:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-07 15:06:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:06:40,660 INFO L87 Difference]: Start difference. First operand 109292 states and 516012 transitions. Second operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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) [2021-10-07 15:06:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:06:46,275 INFO L93 Difference]: Finished difference Result 180558 states and 849679 transitions. [2021-10-07 15:06:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 15:06:46,276 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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 42 [2021-10-07 15:06:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:06:49,644 INFO L225 Difference]: With dead ends: 180558 [2021-10-07 15:06:49,644 INFO L226 Difference]: Without dead ends: 169172 [2021-10-07 15:06:49,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 574.8ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:06:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169172 states. [2021-10-07 15:06:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169172 to 112198. [2021-10-07 15:06:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112198 states, 112183 states have (on average 4.722810051433818) internal successors, (529819), 112197 states have internal predecessors, (529819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:06:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112198 states to 112198 states and 529819 transitions. [2021-10-07 15:06:59,232 INFO L78 Accepts]: Start accepts. Automaton has 112198 states and 529819 transitions. Word has length 42 [2021-10-07 15:06:59,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:06:59,232 INFO L470 AbstractCegarLoop]: Abstraction has 112198 states and 529819 transitions. [2021-10-07 15:06:59,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 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) [2021-10-07 15:06:59,234 INFO L276 IsEmpty]: Start isEmpty. Operand 112198 states and 529819 transitions. [2021-10-07 15:06:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-07 15:06:59,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:06:59,455 INFO L512 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1] [2021-10-07 15:06:59,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-07 15:06:59,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-10-07 15:06:59,671 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:06:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:06:59,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1980428337, now seen corresponding path program 38 times [2021-10-07 15:06:59,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:06:59,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349328348] [2021-10-07 15:06:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:06:59,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:06:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:00,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:00,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349328348] [2021-10-07 15:07:00,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349328348] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:00,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311117094] [2021-10-07 15:07:00,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:07:00,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:00,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:00,446 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:07:00,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-07 15:07:01,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:07:01,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:01,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-07 15:07:01,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:01,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311117094] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:01,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:01,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-10-07 15:07:01,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872006035] [2021-10-07 15:07:01,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-07 15:07:01,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:01,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-07 15:07:01,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:07:01,149 INFO L87 Difference]: Start difference. First operand 112198 states and 529819 transitions. Second operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:06,724 INFO L93 Difference]: Finished difference Result 221672 states and 1004290 transitions. [2021-10-07 15:07:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 15:07:06,725 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 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 42 [2021-10-07 15:07:06,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:09,958 INFO L225 Difference]: With dead ends: 221672 [2021-10-07 15:07:09,958 INFO L226 Difference]: Without dead ends: 207512 [2021-10-07 15:07:09,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 672.0ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 15:07:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207512 states. [2021-10-07 15:07:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207512 to 114904. [2021-10-07 15:07:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114904 states, 114889 states have (on average 4.723628893975925) internal successors, (542693), 114903 states have internal predecessors, (542693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114904 states to 114904 states and 542693 transitions. [2021-10-07 15:07:21,078 INFO L78 Accepts]: Start accepts. Automaton has 114904 states and 542693 transitions. Word has length 42 [2021-10-07 15:07:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:07:21,078 INFO L470 AbstractCegarLoop]: Abstraction has 114904 states and 542693 transitions. [2021-10-07 15:07:21,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 114904 states and 542693 transitions. [2021-10-07 15:07:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-07 15:07:21,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:07:21,424 INFO L512 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:07:21,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-07 15:07:21,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-10-07 15:07:21,640 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2021-10-07 15:07:21,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:07:21,641 INFO L82 PathProgramCache]: Analyzing trace with hash 821583079, now seen corresponding path program 35 times [2021-10-07 15:07:21,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-07 15:07:21,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890920439] [2021-10-07 15:07:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:07:21,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-07 15:07:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:07:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:22,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-07 15:07:22,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890920439] [2021-10-07 15:07:22,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890920439] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:22,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497633377] [2021-10-07 15:07:22,356 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:07:22,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:07:22,357 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:07:22,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-07 15:07:22,908 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-07 15:07:22,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:07:22,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-07 15:07:22,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:07:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:07:23,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497633377] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-07 15:07:23,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:07:23,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2021-10-07 15:07:23,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819116369] [2021-10-07 15:07:23,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-07 15:07:23,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-07 15:07:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-07 15:07:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:07:23,043 INFO L87 Difference]: Start difference. First operand 114904 states and 542693 transitions. Second operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:07:29,203 INFO L93 Difference]: Finished difference Result 189926 states and 894071 transitions. [2021-10-07 15:07:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 15:07:29,203 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-07 15:07:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:07:32,396 INFO L225 Difference]: With dead ends: 189926 [2021-10-07 15:07:32,397 INFO L226 Difference]: Without dead ends: 177928 [2021-10-07 15:07:32,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 545.6ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-07 15:07:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177928 states. Received shutdown request... [2021-10-07 15:07:39,077 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:07:39,077 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:07:39,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177928 to 117880. [2021-10-07 15:07:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117880 states, 117865 states have (on average 4.72434564968396) internal successors, (556835), 117879 states have internal predecessors, (556835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:07:39,829 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:39,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-07 15:07:40,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:07:40,046 WARN L594 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2021-10-07 15:07:40,048 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,049 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,050 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,051 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,052 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,052 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,052 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-07 15:07:40,058 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:07:40,058 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:07:40,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:07:40 BasicIcfg [2021-10-07 15:07:40,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:07:40,060 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.witnessprinter [2021-10-07 15:07:40,062 INFO L168 Benchmark]: Toolchain (without parser) took 533982.81 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 126.2 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. [2021-10-07 15:07:40,062 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:07:40,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:07:40,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:07:40,063 INFO L168 Benchmark]: Boogie Preprocessor took 45.89 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 112.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:07:40,064 INFO L168 Benchmark]: RCFGBuilder took 867.62 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 125.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:07:40,064 INFO L168 Benchmark]: TraceAbstraction took 532694.61 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 124.8 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. [2021-10-07 15:07:40,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory is still 121.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 297.97 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 61.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.89 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 112.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 867.62 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 125.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 532694.61 ms. Allocated memory was 151.0 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 124.8 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 3.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5254.5ms, 145 PlacesBefore, 58 PlacesAfterwards, 141 TransitionsBefore, 49 TransitionsAfterwards, 5184 CoEnabledTransitionPairs, 5 FixpointIterations, 39 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 122 TotalNumberOfCompositions, 6285 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5922, positive: 5907, positive conditional: 0, positive unconditional: 5907, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3253, positive: 3243, positive conditional: 0, positive unconditional: 3243, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3253, positive: 3237, positive conditional: 0, positive unconditional: 3237, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5922, positive: 2664, positive conditional: 0, positive unconditional: 2664, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 3253, unknown conditional: 0, unknown unconditional: 3253] , Statistics on independence cache: Total cache size (in pairs): 224, Positive cache size: 224, Positive conditional cache size: 0, Positive unconditional cache size: 224, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 197 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 532479.9ms, OverallIterations: 87, TraceHistogramMax: 38, EmptinessCheckTime: 7205.5ms, AutomataDifference: 205475.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5641.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4058 SDtfs, 87470 SDslu, 35416 SDs, 0 SdLazy, 3729 SolverSat, 4359 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7036.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3230 GetRequests, 1728 SyntacticMatches, 0 SemanticMatches, 1502 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 16423.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114904occurred in iteration=86, InterpolantAutomatonStates: 1635, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 245241.0ms AutomataMinimizationTime, 87 MinimizatonAttempts, 2018796 StatesRemovedByMinimization, 83 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 883.5ms SsaConstructionTime, 4864.0ms SatisfiabilityAnalysisTime, 27089.2ms InterpolantComputationTime, 3742 NumberOfCodeBlocks, 3740 NumberOfCodeBlocksAsserted, 537 NumberOfCheckSat, 3578 ConstructedInterpolants, 0 QuantifiedInterpolants, 10584 SizeOfPredicates, 0 NumberOfNonLiveVariables, 18217 ConjunctsInSsa, 1606 ConjunctsInUnsatCore, 164 InterpolantComputations, 13 PerfectInterpolantSequences, 11/35318 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown