/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 16:49:16,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 16:49:16,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 16:49:16,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 16:49:16,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 16:49:16,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 16:49:16,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 16:49:16,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 16:49:16,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 16:49:16,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 16:49:16,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 16:49:16,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 16:49:17,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 16:49:17,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 16:49:17,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 16:49:17,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 16:49:17,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 16:49:17,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 16:49:17,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 16:49:17,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 16:49:17,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 16:49:17,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 16:49:17,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 16:49:17,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 16:49:17,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 16:49:17,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 16:49:17,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 16:49:17,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 16:49:17,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 16:49:17,096 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 16:49:17,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 16:49:17,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 16:49:17,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 16:49:17,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 16:49:17,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 16:49:17,102 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 16:49:17,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 16:49:17,102 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 16:49:17,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 16:49:17,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 16:49:17,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 16:49:17,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 16:49:17,104 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 16:49:17,104 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 16:49:17,105 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 16:49:17,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 16:49:17,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 16:49:17,105 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 16:49:17,106 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 16:49:17,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 16:49:17,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 16:49:17,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 16:49:17,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 16:49:17,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 16:49:17,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:49:17,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 16:49:17,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 16:49:17,108 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 16:49:17,108 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 16:49:17,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 16:49:17,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 16:49:17,109 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 16:49:17,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 16:49:17,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 16:49:17,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 16:49:17,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 16:49:17,613 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 16:49:17,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2021-10-08 16:49:17,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0df5165/3ffda19ef2c24967be9a7a15fb671249/FLAGc51a1c776 [2021-10-08 16:49:18,440 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 16:49:18,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2021-10-08 16:49:18,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0df5165/3ffda19ef2c24967be9a7a15fb671249/FLAGc51a1c776 [2021-10-08 16:49:18,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c0df5165/3ffda19ef2c24967be9a7a15fb671249 [2021-10-08 16:49:18,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 16:49:18,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 16:49:18,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 16:49:18,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 16:49:18,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 16:49:18,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:49:18" (1/1) ... [2021-10-08 16:49:18,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3332e28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:18, skipping insertion in model container [2021-10-08 16:49:18,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 04:49:18" (1/1) ... [2021-10-08 16:49:18,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 16:49:18,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:49:19,217 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/chl-name-comparator-trans.wvr.c[5300,5313] [2021-10-08 16:49:19,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:49:19,266 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 16:49:19,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 16:49:19,326 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/chl-name-comparator-trans.wvr.c[5300,5313] [2021-10-08 16:49:19,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:49:19,341 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 16:49:19,375 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/chl-name-comparator-trans.wvr.c[5300,5313] [2021-10-08 16:49:19,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 16:49:19,399 INFO L208 MainTranslator]: Completed translation [2021-10-08 16:49:19,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19 WrapperNode [2021-10-08 16:49:19,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 16:49:19,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 16:49:19,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 16:49:19,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 16:49:19,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 16:49:19,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 16:49:19,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 16:49:19,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 16:49:19,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 16:49:19,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 16:49:19,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 16:49:19,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 16:49:19,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (1/1) ... [2021-10-08 16:49:19,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 16:49:19,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:49:19,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 16:49:19,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 16:49:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 16:49:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 16:49:19,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 16:49:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 16:49:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 16:49:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 16:49:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 16:49:19,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 16:49:19,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 16:49:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 16:49:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 16:49:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 16:49:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 16:49:19,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 16:49:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 16:49:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 16:49:19,686 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 16:49:22,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 16:49:22,243 INFO L299 CfgBuilder]: Removed 46 assume(true) statements. [2021-10-08 16:49:22,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:49:22 BoogieIcfgContainer [2021-10-08 16:49:22,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 16:49:22,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 16:49:22,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 16:49:22,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 16:49:22,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 04:49:18" (1/3) ... [2021-10-08 16:49:22,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8e6c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:49:22, skipping insertion in model container [2021-10-08 16:49:22,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 04:49:19" (2/3) ... [2021-10-08 16:49:22,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8e6c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 04:49:22, skipping insertion in model container [2021-10-08 16:49:22,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 04:49:22" (3/3) ... [2021-10-08 16:49:22,256 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2021-10-08 16:49:22,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 16:49:22,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-08 16:49:22,263 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 16:49:22,308 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,309 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,310 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,311 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,311 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,311 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,311 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,311 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,312 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,312 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,312 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,312 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,313 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,314 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,314 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,315 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,315 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,315 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,315 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,315 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,316 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,316 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,317 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,318 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,319 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,319 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,320 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,320 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,320 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,320 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,320 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,321 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,322 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,322 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,323 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,324 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,324 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,325 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,325 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,326 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,326 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,354 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,355 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,355 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,355 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,355 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,356 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,356 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,356 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,357 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,360 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,361 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,361 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,363 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,363 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,363 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,364 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,364 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,364 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,365 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,365 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,366 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,367 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,367 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,368 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,368 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,368 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,369 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,369 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,369 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,370 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,371 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,371 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,372 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,372 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,373 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,374 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,374 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,375 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,375 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,375 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,376 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,376 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,377 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,377 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,378 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,378 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,378 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,379 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,379 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,379 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,380 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,381 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,381 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,381 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,381 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,381 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,382 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,382 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,382 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,382 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,382 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,383 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,383 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,384 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,384 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,384 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,385 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,385 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,389 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,390 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,390 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,390 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,391 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,392 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,393 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,393 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,396 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,396 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,396 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,396 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,397 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,398 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,398 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,398 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,398 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,398 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,398 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,399 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,399 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,399 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ret12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,401 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,401 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,402 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,402 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,402 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,402 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,402 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,403 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,404 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ret34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,405 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,405 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,405 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 16:49:22,411 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 16:49:22,463 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 16:49:22,472 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 16:49:22,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-10-08 16:49:22,491 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 16:49:22,504 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 191 transitions, 406 flow [2021-10-08 16:49:22,507 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 191 transitions, 406 flow [2021-10-08 16:49:22,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 406 flow [2021-10-08 16:49:22,586 INFO L129 PetriNetUnfolder]: 11/188 cut-off events. [2021-10-08 16:49:22,587 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 16:49:22,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 11/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2021-10-08 16:49:22,598 INFO L116 LiptonReduction]: Number of co-enabled transitions 2160 [2021-10-08 16:49:57,825 INFO L131 LiptonReduction]: Checked pairs total: 2817 [2021-10-08 16:49:57,826 INFO L133 LiptonReduction]: Total number of compositions: 196 [2021-10-08 16:49:57,837 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 122 flow [2021-10-08 16:49:57,894 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:49:57,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:49:57,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:49:57,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:49:57,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:49:57,915 INFO L82 PathProgramCache]: Analyzing trace with hash 41840, now seen corresponding path program 1 times [2021-10-08 16:49:57,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:49:57,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764053351] [2021-10-08 16:49:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:49:57,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:49:57,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:49:57,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:49:57,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 16:49:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:49:58,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:49:58,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:49:58,510 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:49:58,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:49:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:49:58,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:49:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:49:58,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:49:58,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764053351] [2021-10-08 16:49:58,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764053351] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:49:58,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:49:58,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:49:58,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094107197] [2021-10-08 16:49:58,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:49:58,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:49:58,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:49:58,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:49:58,727 INFO L87 Difference]: Start difference. First operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:49:59,705 INFO L93 Difference]: Finished difference Result 2243 states and 7691 transitions. [2021-10-08 16:49:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:49:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:49:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:49:59,757 INFO L225 Difference]: With dead ends: 2243 [2021-10-08 16:49:59,758 INFO L226 Difference]: Without dead ends: 2243 [2021-10-08 16:49:59,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:49:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2021-10-08 16:49:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 751. [2021-10-08 16:49:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 618 states have (on average 4.166666666666667) internal successors, (2575), 750 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2575 transitions. [2021-10-08 16:49:59,960 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2575 transitions. Word has length 2 [2021-10-08 16:49:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:49:59,962 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2575 transitions. [2021-10-08 16:49:59,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:49:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2575 transitions. [2021-10-08 16:49:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:49:59,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:49:59,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:49:59,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:00,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:00,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:00,178 INFO L82 PathProgramCache]: Analyzing trace with hash 41968, now seen corresponding path program 1 times [2021-10-08 16:50:00,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:00,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375935965] [2021-10-08 16:50:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:00,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:00,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:00,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:00,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 16:50:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:00,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:50:00,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:00,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:00,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:00,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375935965] [2021-10-08 16:50:00,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375935965] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:00,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:00,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:50:00,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512155249] [2021-10-08 16:50:00,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:50:00,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:00,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:50:00,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:00,293 INFO L87 Difference]: Start difference. First operand 751 states and 2575 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:00,399 INFO L93 Difference]: Finished difference Result 752 states and 2569 transitions. [2021-10-08 16:50:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:50:00,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:50:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:00,410 INFO L225 Difference]: With dead ends: 752 [2021-10-08 16:50:00,410 INFO L226 Difference]: Without dead ends: 752 [2021-10-08 16:50:00,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:00,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-10-08 16:50:00,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 751. [2021-10-08 16:50:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 618 states have (on average 4.156957928802589) internal successors, (2569), 750 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2569 transitions. [2021-10-08 16:50:00,453 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2569 transitions. Word has length 2 [2021-10-08 16:50:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:00,453 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2569 transitions. [2021-10-08 16:50:00,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2569 transitions. [2021-10-08 16:50:00,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 16:50:00,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:00,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 16:50:00,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:00,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:00,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 41841, now seen corresponding path program 1 times [2021-10-08 16:50:00,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:00,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953772407] [2021-10-08 16:50:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:00,673 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:00,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:00,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 16:50:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:00,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:50:00,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:00,835 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:50:00,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 16:50:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:00,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:00,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:00,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953772407] [2021-10-08 16:50:00,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953772407] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:00,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:00,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:50:00,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704993477] [2021-10-08 16:50:00,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:50:00,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:00,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:50:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:50:00,900 INFO L87 Difference]: Start difference. First operand 751 states and 2569 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:01,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:01,042 INFO L93 Difference]: Finished difference Result 750 states and 2566 transitions. [2021-10-08 16:50:01,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:50:01,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 16:50:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:01,051 INFO L225 Difference]: With dead ends: 750 [2021-10-08 16:50:01,051 INFO L226 Difference]: Without dead ends: 750 [2021-10-08 16:50:01,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:50:01,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-08 16:50:01,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-10-08 16:50:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 618 states have (on average 4.15210355987055) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2566 transitions. [2021-10-08 16:50:01,090 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2566 transitions. Word has length 2 [2021-10-08 16:50:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:01,091 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2566 transitions. [2021-10-08 16:50:01,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2566 transitions. [2021-10-08 16:50:01,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:50:01,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:01,092 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:50:01,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:01,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:01,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:01,307 INFO L82 PathProgramCache]: Analyzing trace with hash 40363664, now seen corresponding path program 1 times [2021-10-08 16:50:01,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:01,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496819857] [2021-10-08 16:50:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:01,309 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:01,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:01,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:01,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 16:50:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:01,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:50:01,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:01,671 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:01,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:01,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:02,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:02,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496819857] [2021-10-08 16:50:02,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496819857] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:02,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:02,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:50:02,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833190102] [2021-10-08 16:50:02,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:50:02,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:50:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:50:02,260 INFO L87 Difference]: Start difference. First operand 750 states and 2566 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:02,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:02,854 INFO L93 Difference]: Finished difference Result 1496 states and 5128 transitions. [2021-10-08 16:50:02,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 16:50:02,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 4 [2021-10-08 16:50:02,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:02,877 INFO L225 Difference]: With dead ends: 1496 [2021-10-08 16:50:02,878 INFO L226 Difference]: Without dead ends: 1496 [2021-10-08 16:50:02,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 365.5ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:50:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-08 16:50:02,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 751. [2021-10-08 16:50:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.1518578352180935) internal successors, (2570), 750 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2570 transitions. [2021-10-08 16:50:02,926 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2570 transitions. Word has length 4 [2021-10-08 16:50:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:02,926 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2570 transitions. [2021-10-08 16:50:02,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2570 transitions. [2021-10-08 16:50:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 16:50:02,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:02,927 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 16:50:02,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-08 16:50:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:03,140 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:03,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 40363792, now seen corresponding path program 1 times [2021-10-08 16:50:03,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:03,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292739124] [2021-10-08 16:50:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:03,144 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:03,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:03,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:03,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 16:50:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:03,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:50:03,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:03,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:03,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:03,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292739124] [2021-10-08 16:50:03,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292739124] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:03,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:03,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 16:50:03,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268130114] [2021-10-08 16:50:03,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:50:03,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:50:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:50:03,382 INFO L87 Difference]: Start difference. First operand 751 states and 2570 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:03,514 INFO L93 Difference]: Finished difference Result 751 states and 2567 transitions. [2021-10-08 16:50:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:50:03,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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 4 [2021-10-08 16:50:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:03,524 INFO L225 Difference]: With dead ends: 751 [2021-10-08 16:50:03,524 INFO L226 Difference]: Without dead ends: 751 [2021-10-08 16:50:03,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 98.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:50:03,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-10-08 16:50:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2021-10-08 16:50:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.147011308562197) internal successors, (2567), 750 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2567 transitions. [2021-10-08 16:50:03,562 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2567 transitions. Word has length 4 [2021-10-08 16:50:03,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:03,562 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 2567 transitions. [2021-10-08 16:50:03,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2567 transitions. [2021-10-08 16:50:03,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:50:03,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:03,563 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-08 16:50:03,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-08 16:50:03,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:03,776 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:03,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:03,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1251278441, now seen corresponding path program 2 times [2021-10-08 16:50:03,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:03,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641925250] [2021-10-08 16:50:03,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:50:03,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:03,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:03,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:03,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 16:50:03,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:50:03,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:50:03,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:50:03,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:03,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 16:50:04,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:04,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641925250] [2021-10-08 16:50:04,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641925250] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:04,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:04,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 16:50:04,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800674130] [2021-10-08 16:50:04,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:50:04,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:04,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:50:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:50:04,080 INFO L87 Difference]: Start difference. First operand 751 states and 2567 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:04,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:04,217 INFO L93 Difference]: Finished difference Result 750 states and 2565 transitions. [2021-10-08 16:50:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:50:04,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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 5 [2021-10-08 16:50:04,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:04,228 INFO L225 Difference]: With dead ends: 750 [2021-10-08 16:50:04,228 INFO L226 Difference]: Without dead ends: 750 [2021-10-08 16:50:04,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:50:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-08 16:50:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-10-08 16:50:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 619 states have (on average 4.143780290791599) internal successors, (2565), 749 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2565 transitions. [2021-10-08 16:50:04,268 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2565 transitions. Word has length 5 [2021-10-08 16:50:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:04,269 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 2565 transitions. [2021-10-08 16:50:04,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2565 transitions. [2021-10-08 16:50:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:50:04,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:04,270 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-08 16:50:04,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:04,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:04,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:04,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1251278569, now seen corresponding path program 2 times [2021-10-08 16:50:04,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:04,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424036651] [2021-10-08 16:50:04,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:50:04,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:04,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:04,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:04,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 16:50:04,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:50:04,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:50:04,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:50:04,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:04,638 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-08 16:50:04,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 54 [2021-10-08 16:50:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:04,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:04,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:04,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424036651] [2021-10-08 16:50:04,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424036651] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:04,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:04,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:50:04,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61899042] [2021-10-08 16:50:04,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:50:04,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:04,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:50:04,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:04,976 INFO L87 Difference]: Start difference. First operand 750 states and 2565 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:05,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:05,172 INFO L93 Difference]: Finished difference Result 624 states and 2064 transitions. [2021-10-08 16:50:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:50:05,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:50:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:05,179 INFO L225 Difference]: With dead ends: 624 [2021-10-08 16:50:05,179 INFO L226 Difference]: Without dead ends: 624 [2021-10-08 16:50:05,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-08 16:50:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2021-10-08 16:50:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 521 states have (on average 3.9616122840690977) internal successors, (2064), 623 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2064 transitions. [2021-10-08 16:50:05,207 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2064 transitions. Word has length 5 [2021-10-08 16:50:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:05,208 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 2064 transitions. [2021-10-08 16:50:05,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2064 transitions. [2021-10-08 16:50:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 16:50:05,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:05,208 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1] [2021-10-08 16:50:05,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:05,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:05,423 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:05,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1251278570, now seen corresponding path program 1 times [2021-10-08 16:50:05,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:05,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041654882] [2021-10-08 16:50:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:05,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:05,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:05,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 16:50:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:05,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:50:05,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:05,870 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:05,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 97 [2021-10-08 16:50:05,881 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 16:50:05,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 96 [2021-10-08 16:50:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:08,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:08,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:08,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041654882] [2021-10-08 16:50:08,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041654882] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:08,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:08,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:50:08,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185605349] [2021-10-08 16:50:08,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:50:08,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:50:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:08,992 INFO L87 Difference]: Start difference. First operand 624 states and 2064 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:09,183 INFO L93 Difference]: Finished difference Result 498 states and 1563 transitions. [2021-10-08 16:50:09,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:50:09,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 16:50:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:09,189 INFO L225 Difference]: With dead ends: 498 [2021-10-08 16:50:09,190 INFO L226 Difference]: Without dead ends: 498 [2021-10-08 16:50:09,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:09,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-08 16:50:09,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2021-10-08 16:50:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 423 states have (on average 3.6950354609929077) internal successors, (1563), 497 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1563 transitions. [2021-10-08 16:50:09,210 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1563 transitions. Word has length 5 [2021-10-08 16:50:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:09,211 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1563 transitions. [2021-10-08 16:50:09,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1563 transitions. [2021-10-08 16:50:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:50:09,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:09,211 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-08 16:50:09,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-08 16:50:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:09,425 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:09,426 INFO L82 PathProgramCache]: Analyzing trace with hash -112104277, now seen corresponding path program 1 times [2021-10-08 16:50:09,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:09,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586914410] [2021-10-08 16:50:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:09,428 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:09,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:09,429 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:09,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 16:50:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:09,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 16:50:09,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:09,837 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:09,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 87 [2021-10-08 16:50:09,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 87 [2021-10-08 16:50:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:13,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:14,035 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:14,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586914410] [2021-10-08 16:50:14,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586914410] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:14,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:14,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:50:14,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863820124] [2021-10-08 16:50:14,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:50:14,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:14,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:50:14,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:14,037 INFO L87 Difference]: Start difference. First operand 498 states and 1563 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:14,198 INFO L93 Difference]: Finished difference Result 468 states and 1478 transitions. [2021-10-08 16:50:14,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:50:14,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:50:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:14,204 INFO L225 Difference]: With dead ends: 468 [2021-10-08 16:50:14,204 INFO L226 Difference]: Without dead ends: 468 [2021-10-08 16:50:14,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-08 16:50:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2021-10-08 16:50:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 405 states have (on average 3.6493827160493826) internal successors, (1478), 467 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1478 transitions. [2021-10-08 16:50:14,223 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1478 transitions. Word has length 7 [2021-10-08 16:50:14,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:14,224 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1478 transitions. [2021-10-08 16:50:14,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:14,224 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1478 transitions. [2021-10-08 16:50:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 16:50:14,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:14,224 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2021-10-08 16:50:14,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:14,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:14,438 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:14,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:14,438 INFO L82 PathProgramCache]: Analyzing trace with hash -112104276, now seen corresponding path program 1 times [2021-10-08 16:50:14,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:14,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761216587] [2021-10-08 16:50:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:14,440 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:14,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:14,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:14,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 16:50:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:14,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 16:50:14,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:14,637 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:50:14,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-08 16:50:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:14,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:14,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:14,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761216587] [2021-10-08 16:50:14,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761216587] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:14,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:14,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:50:14,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821200123] [2021-10-08 16:50:14,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:50:14,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:14,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:50:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:14,981 INFO L87 Difference]: Start difference. First operand 468 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:15,110 INFO L93 Difference]: Finished difference Result 438 states and 1393 transitions. [2021-10-08 16:50:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:50:15,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 16:50:15,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:15,115 INFO L225 Difference]: With dead ends: 438 [2021-10-08 16:50:15,116 INFO L226 Difference]: Without dead ends: 438 [2021-10-08 16:50:15,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-08 16:50:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2021-10-08 16:50:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 387 states have (on average 3.599483204134367) internal successors, (1393), 437 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1393 transitions. [2021-10-08 16:50:15,133 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1393 transitions. Word has length 7 [2021-10-08 16:50:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:15,134 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1393 transitions. [2021-10-08 16:50:15,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1393 transitions. [2021-10-08 16:50:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:50:15,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:15,135 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-08 16:50:15,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:15,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:15,349 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:15,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 819729667, now seen corresponding path program 1 times [2021-10-08 16:50:15,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:15,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530276207] [2021-10-08 16:50:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:15,351 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:15,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:15,353 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:15,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 16:50:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:15,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:50:15,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:15,539 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:50:15,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 16:50:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:15,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:15,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:15,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530276207] [2021-10-08 16:50:15,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530276207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:15,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:15,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-08 16:50:15,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993011832] [2021-10-08 16:50:15,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:50:15,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:50:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:15,615 INFO L87 Difference]: Start difference. First operand 438 states and 1393 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:15,742 INFO L93 Difference]: Finished difference Result 256 states and 792 transitions. [2021-10-08 16:50:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:50:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:50:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:15,746 INFO L225 Difference]: With dead ends: 256 [2021-10-08 16:50:15,746 INFO L226 Difference]: Without dead ends: 256 [2021-10-08 16:50:15,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 16:50:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-08 16:50:15,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-10-08 16:50:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 236 states have (on average 3.3559322033898304) internal successors, (792), 255 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 792 transitions. [2021-10-08 16:50:15,756 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 792 transitions. Word has length 8 [2021-10-08 16:50:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:15,757 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 792 transitions. [2021-10-08 16:50:15,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 792 transitions. [2021-10-08 16:50:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 16:50:15,757 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:15,757 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-08 16:50:15,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-08 16:50:15,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:15,970 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:15,971 INFO L82 PathProgramCache]: Analyzing trace with hash 819729668, now seen corresponding path program 1 times [2021-10-08 16:50:15,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:15,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545970039] [2021-10-08 16:50:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:15,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:15,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:15,973 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:15,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 16:50:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:16,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:50:16,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:16,331 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:16,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:16,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:16,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:16,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545970039] [2021-10-08 16:50:16,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545970039] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:16,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:16,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 16:50:16,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584636648] [2021-10-08 16:50:16,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:50:16,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:50:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:50:16,747 INFO L87 Difference]: Start difference. First operand 256 states and 792 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:17,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:17,265 INFO L93 Difference]: Finished difference Result 556 states and 1708 transitions. [2021-10-08 16:50:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:50:17,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 16:50:17,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:17,271 INFO L225 Difference]: With dead ends: 556 [2021-10-08 16:50:17,271 INFO L226 Difference]: Without dead ends: 556 [2021-10-08 16:50:17,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 281.7ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:50:17,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-08 16:50:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 356. [2021-10-08 16:50:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 336 states have (on average 3.630952380952381) internal successors, (1220), 355 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1220 transitions. [2021-10-08 16:50:17,289 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1220 transitions. Word has length 8 [2021-10-08 16:50:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:17,289 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1220 transitions. [2021-10-08 16:50:17,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1220 transitions. [2021-10-08 16:50:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:50:17,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:17,290 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:17,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-08 16:50:17,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:17,504 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:17,504 INFO L82 PathProgramCache]: Analyzing trace with hash -357991194, now seen corresponding path program 1 times [2021-10-08 16:50:17,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:17,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509141074] [2021-10-08 16:50:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:17,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:17,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:17,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:17,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 16:50:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:17,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 16:50:17,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:17,743 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 16:50:17,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 16:50:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:17,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:17,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:17,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509141074] [2021-10-08 16:50:17,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509141074] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:17,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:17,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 16:50:17,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657340593] [2021-10-08 16:50:17,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 16:50:17,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 16:50:17,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:50:17,821 INFO L87 Difference]: Start difference. First operand 356 states and 1220 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:17,925 INFO L93 Difference]: Finished difference Result 328 states and 1132 transitions. [2021-10-08 16:50:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:50:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 9 [2021-10-08 16:50:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:17,930 INFO L225 Difference]: With dead ends: 328 [2021-10-08 16:50:17,930 INFO L226 Difference]: Without dead ends: 328 [2021-10-08 16:50:17,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 16:50:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-08 16:50:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-10-08 16:50:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 314 states have (on average 3.605095541401274) internal successors, (1132), 327 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1132 transitions. [2021-10-08 16:50:17,943 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1132 transitions. Word has length 9 [2021-10-08 16:50:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:17,944 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1132 transitions. [2021-10-08 16:50:17,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:17,944 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1132 transitions. [2021-10-08 16:50:17,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 16:50:17,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:17,945 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:17,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:18,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:18,149 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:18,150 INFO L82 PathProgramCache]: Analyzing trace with hash -357991192, now seen corresponding path program 1 times [2021-10-08 16:50:18,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:18,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947956294] [2021-10-08 16:50:18,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:18,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:18,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:18,153 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:18,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 16:50:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:18,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 16:50:18,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:18,582 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-08 16:50:18,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 76 [2021-10-08 16:50:18,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77 [2021-10-08 16:50:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:19,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:19,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:19,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947956294] [2021-10-08 16:50:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947956294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:19,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:19,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 16:50:19,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462431299] [2021-10-08 16:50:19,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 16:50:19,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 16:50:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:19,677 INFO L87 Difference]: Start difference. First operand 328 states and 1132 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:19,788 INFO L93 Difference]: Finished difference Result 300 states and 1044 transitions. [2021-10-08 16:50:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 16:50:19,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 9 [2021-10-08 16:50:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:19,797 INFO L225 Difference]: With dead ends: 300 [2021-10-08 16:50:19,797 INFO L226 Difference]: Without dead ends: 300 [2021-10-08 16:50:19,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 138.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 16:50:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-10-08 16:50:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2021-10-08 16:50:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 292 states have (on average 3.5753424657534247) internal successors, (1044), 299 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1044 transitions. [2021-10-08 16:50:19,813 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1044 transitions. Word has length 9 [2021-10-08 16:50:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:19,813 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1044 transitions. [2021-10-08 16:50:19,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1044 transitions. [2021-10-08 16:50:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:50:19,815 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:19,815 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-08 16:50:19,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:20,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:20,031 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:20,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1781235844, now seen corresponding path program 1 times [2021-10-08 16:50:20,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:20,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493017183] [2021-10-08 16:50:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:20,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:20,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:20,035 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:20,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 16:50:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:20,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:50:20,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:20,407 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:20,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:20,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:21,136 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:21,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493017183] [2021-10-08 16:50:21,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493017183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:21,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:21,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:50:21,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34719411] [2021-10-08 16:50:21,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:50:21,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:50:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:50:21,138 INFO L87 Difference]: Start difference. First operand 300 states and 1044 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:21,796 INFO L93 Difference]: Finished difference Result 594 states and 1862 transitions. [2021-10-08 16:50:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:50:21,798 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 16:50:21,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:21,802 INFO L225 Difference]: With dead ends: 594 [2021-10-08 16:50:21,802 INFO L226 Difference]: Without dead ends: 594 [2021-10-08 16:50:21,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 538.3ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:50:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-10-08 16:50:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 342. [2021-10-08 16:50:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 334 states have (on average 3.6706586826347305) internal successors, (1226), 341 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1226 transitions. [2021-10-08 16:50:21,817 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1226 transitions. Word has length 10 [2021-10-08 16:50:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:21,817 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 1226 transitions. [2021-10-08 16:50:21,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1226 transitions. [2021-10-08 16:50:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 16:50:21,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:21,818 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:21,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:22,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:22,035 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1787170551, now seen corresponding path program 1 times [2021-10-08 16:50:22,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:22,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289948436] [2021-10-08 16:50:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:22,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:22,039 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:22,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 16:50:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:22,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:50:22,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:22,445 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:22,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:22,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:22,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:22,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289948436] [2021-10-08 16:50:22,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289948436] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:22,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:22,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 16:50:22,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432582852] [2021-10-08 16:50:22,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:50:22,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:50:22,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:50:22,786 INFO L87 Difference]: Start difference. First operand 342 states and 1226 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:23,146 INFO L93 Difference]: Finished difference Result 674 states and 2430 transitions. [2021-10-08 16:50:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:50:23,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 10 [2021-10-08 16:50:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:23,154 INFO L225 Difference]: With dead ends: 674 [2021-10-08 16:50:23,154 INFO L226 Difference]: Without dead ends: 674 [2021-10-08 16:50:23,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 201.1ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:50:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-10-08 16:50:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 498. [2021-10-08 16:50:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 490 states have (on average 4.012244897959183) internal successors, (1966), 497 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1966 transitions. [2021-10-08 16:50:23,174 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1966 transitions. Word has length 10 [2021-10-08 16:50:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:23,174 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1966 transitions. [2021-10-08 16:50:23,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1966 transitions. [2021-10-08 16:50:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 16:50:23,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:23,175 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-08 16:50:23,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:23,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:23,389 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:23,390 INFO L82 PathProgramCache]: Analyzing trace with hash -616262432, now seen corresponding path program 2 times [2021-10-08 16:50:23,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:23,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75783792] [2021-10-08 16:50:23,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:50:23,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:23,392 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:23,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 16:50:23,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:50:23,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:50:23,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 16:50:23,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:23,817 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:23,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:24,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:24,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:24,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75783792] [2021-10-08 16:50:24,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75783792] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:24,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:24,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-08 16:50:24,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828237556] [2021-10-08 16:50:24,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:50:24,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:50:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:50:24,560 INFO L87 Difference]: Start difference. First operand 498 states and 1966 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:25,355 INFO L93 Difference]: Finished difference Result 796 states and 2708 transitions. [2021-10-08 16:50:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 16:50:25,356 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 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 11 [2021-10-08 16:50:25,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:25,364 INFO L225 Difference]: With dead ends: 796 [2021-10-08 16:50:25,364 INFO L226 Difference]: Without dead ends: 796 [2021-10-08 16:50:25,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 561.6ms TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-10-08 16:50:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-08 16:50:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 436. [2021-10-08 16:50:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 432 states have (on average 3.8796296296296298) internal successors, (1676), 435 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1676 transitions. [2021-10-08 16:50:25,391 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1676 transitions. Word has length 11 [2021-10-08 16:50:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:25,392 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1676 transitions. [2021-10-08 16:50:25,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1676 transitions. [2021-10-08 16:50:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:50:25,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:25,393 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:25,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:25,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:25,607 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash -510759675, now seen corresponding path program 1 times [2021-10-08 16:50:25,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:25,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976577629] [2021-10-08 16:50:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:25,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:25,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:25,610 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:25,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 16:50:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:25,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:50:25,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:26,001 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:26,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:26,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:26,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:26,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976577629] [2021-10-08 16:50:26,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976577629] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:26,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:26,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 16:50:26,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813222779] [2021-10-08 16:50:26,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 16:50:26,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 16:50:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 16:50:26,423 INFO L87 Difference]: Start difference. First operand 436 states and 1676 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) [2021-10-08 16:50:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:26,762 INFO L93 Difference]: Finished difference Result 784 states and 3056 transitions. [2021-10-08 16:50:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:50:26,763 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 [2021-10-08 16:50:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:26,769 INFO L225 Difference]: With dead ends: 784 [2021-10-08 16:50:26,769 INFO L226 Difference]: Without dead ends: 784 [2021-10-08 16:50:26,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 226.7ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 16:50:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-08 16:50:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 608. [2021-10-08 16:50:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 604 states have (on average 4.198675496688741) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-08 16:50:26,795 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 12 [2021-10-08 16:50:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:26,795 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-08 16:50:26,796 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) [2021-10-08 16:50:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-08 16:50:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 16:50:26,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:26,797 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:26,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:27,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:27,010 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:27,011 INFO L82 PathProgramCache]: Analyzing trace with hash -515979657, now seen corresponding path program 1 times [2021-10-08 16:50:27,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:27,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194533744] [2021-10-08 16:50:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:27,013 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:27,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:27,014 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:27,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 16:50:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:27,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:50:27,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:27,435 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:27,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:27,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:28,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:28,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194533744] [2021-10-08 16:50:28,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194533744] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:28,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:28,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:50:28,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913497075] [2021-10-08 16:50:28,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:50:28,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:50:28,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:50:28,164 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:28,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:28,692 INFO L93 Difference]: Finished difference Result 1034 states and 3954 transitions. [2021-10-08 16:50:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:50:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 16:50:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:28,700 INFO L225 Difference]: With dead ends: 1034 [2021-10-08 16:50:28,700 INFO L226 Difference]: Without dead ends: 1034 [2021-10-08 16:50:28,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 511.5ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:50:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-10-08 16:50:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 704. [2021-10-08 16:50:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 700 states have (on average 4.3028571428571425) internal successors, (3012), 703 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 3012 transitions. [2021-10-08 16:50:28,730 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 3012 transitions. Word has length 12 [2021-10-08 16:50:28,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:28,731 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 3012 transitions. [2021-10-08 16:50:28,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:28,731 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 3012 transitions. [2021-10-08 16:50:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 16:50:28,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:28,733 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:28,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-08 16:50:28,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:28,946 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1184501043, now seen corresponding path program 2 times [2021-10-08 16:50:28,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:28,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090262324] [2021-10-08 16:50:28,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:50:28,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:28,949 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:28,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 16:50:29,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:50:29,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:50:29,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:50:29,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:29,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:29,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:29,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090262324] [2021-10-08 16:50:29,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090262324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:29,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:29,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:50:29,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333031779] [2021-10-08 16:50:29,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:50:29,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:29,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:50:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:50:29,327 INFO L87 Difference]: Start difference. First operand 704 states and 3012 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:29,460 INFO L93 Difference]: Finished difference Result 938 states and 3478 transitions. [2021-10-08 16:50:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:50:29,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 13 [2021-10-08 16:50:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:29,467 INFO L225 Difference]: With dead ends: 938 [2021-10-08 16:50:29,467 INFO L226 Difference]: Without dead ends: 938 [2021-10-08 16:50:29,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:50:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-10-08 16:50:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 608. [2021-10-08 16:50:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 606 states have (on average 4.184818481848184) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-08 16:50:29,494 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 13 [2021-10-08 16:50:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:29,495 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-08 16:50:29,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-08 16:50:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 16:50:29,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:29,496 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:29,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:29,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:29,709 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1213739163, now seen corresponding path program 1 times [2021-10-08 16:50:29,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:29,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826971561] [2021-10-08 16:50:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:29,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:29,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:29,713 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:29,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 16:50:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:29,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 16:50:29,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:30,227 INFO L354 Elim1Store]: treesize reduction 219, result has 23.4 percent of original size [2021-10-08 16:50:30,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 72 [2021-10-08 16:50:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:30,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:31,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:31,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826971561] [2021-10-08 16:50:31,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826971561] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:31,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:31,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 16:50:31,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489567142] [2021-10-08 16:50:31,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 16:50:31,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 16:50:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-08 16:50:31,005 INFO L87 Difference]: Start difference. First operand 608 states and 2536 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) [2021-10-08 16:50:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:31,499 INFO L93 Difference]: Finished difference Result 958 states and 3746 transitions. [2021-10-08 16:50:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:50:31,500 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 14 [2021-10-08 16:50:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:31,504 INFO L225 Difference]: With dead ends: 958 [2021-10-08 16:50:31,504 INFO L226 Difference]: Without dead ends: 958 [2021-10-08 16:50:31,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 508.4ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-08 16:50:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2021-10-08 16:50:31,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 694. [2021-10-08 16:50:31,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 692 states have (on average 4.286127167630058) internal successors, (2966), 693 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2966 transitions. [2021-10-08 16:50:31,534 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2966 transitions. Word has length 14 [2021-10-08 16:50:31,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:31,534 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2966 transitions. [2021-10-08 16:50:31,534 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) [2021-10-08 16:50:31,534 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2966 transitions. [2021-10-08 16:50:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 16:50:31,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:31,536 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:31,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-08 16:50:31,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:31,749 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:31,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1028792760, now seen corresponding path program 2 times [2021-10-08 16:50:31,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:31,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735407065] [2021-10-08 16:50:31,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:50:31,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:31,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:31,753 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:31,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 16:50:32,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 16:50:32,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:50:32,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 16:50:32,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:32,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:32,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:32,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735407065] [2021-10-08 16:50:32,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735407065] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 16:50:32,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 16:50:32,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 16:50:32,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469257087] [2021-10-08 16:50:32,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 16:50:32,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:32,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 16:50:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:50:32,158 INFO L87 Difference]: Start difference. First operand 694 states and 2966 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:32,315 INFO L93 Difference]: Finished difference Result 872 states and 3316 transitions. [2021-10-08 16:50:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 16:50:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 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 15 [2021-10-08 16:50:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:32,321 INFO L225 Difference]: With dead ends: 872 [2021-10-08 16:50:32,321 INFO L226 Difference]: Without dead ends: 872 [2021-10-08 16:50:32,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:50:32,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-10-08 16:50:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2021-10-08 16:50:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.177924217462932) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2021-10-08 16:50:32,348 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 15 [2021-10-08 16:50:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:32,348 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2021-10-08 16:50:32,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2021-10-08 16:50:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 16:50:32,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:32,352 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:32,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:32,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:32,566 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:32,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1994547641, now seen corresponding path program 1 times [2021-10-08 16:50:32,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:32,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176854412] [2021-10-08 16:50:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:32,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:32,571 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:32,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 16:50:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:32,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:50:32,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:33,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:33,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:33,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176854412] [2021-10-08 16:50:33,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176854412] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:33,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:33,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:50:33,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954845762] [2021-10-08 16:50:33,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:50:33,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:50:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:50:33,391 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:33,658 INFO L93 Difference]: Finished difference Result 779 states and 3087 transitions. [2021-10-08 16:50:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:50:33,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 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 23 [2021-10-08 16:50:33,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:33,662 INFO L225 Difference]: With dead ends: 779 [2021-10-08 16:50:33,662 INFO L226 Difference]: Without dead ends: 608 [2021-10-08 16:50:33,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:50:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-08 16:50:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-10-08 16:50:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.036243822075782) internal successors, (2450), 607 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2450 transitions. [2021-10-08 16:50:33,703 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2450 transitions. Word has length 23 [2021-10-08 16:50:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:33,703 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2450 transitions. [2021-10-08 16:50:33,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2450 transitions. [2021-10-08 16:50:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:50:33,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:33,708 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:33,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-08 16:50:33,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:33,917 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:33,917 INFO L82 PathProgramCache]: Analyzing trace with hash -706854179, now seen corresponding path program 1 times [2021-10-08 16:50:33,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:33,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880778027] [2021-10-08 16:50:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:33,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:33,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:33,919 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:33,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 16:50:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:34,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 16:50:34,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:34,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 16:50:34,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:34,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880778027] [2021-10-08 16:50:34,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880778027] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 16:50:34,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 16:50:34,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-10-08 16:50:34,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084794912] [2021-10-08 16:50:34,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 16:50:34,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:34,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 16:50:34,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 16:50:34,548 INFO L87 Difference]: Start difference. First operand 608 states and 2450 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:35,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:35,037 INFO L93 Difference]: Finished difference Result 744 states and 2958 transitions. [2021-10-08 16:50:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 16:50:35,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 24 [2021-10-08 16:50:35,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:35,041 INFO L225 Difference]: With dead ends: 744 [2021-10-08 16:50:35,041 INFO L226 Difference]: Without dead ends: 744 [2021-10-08 16:50:35,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 159.1ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-08 16:50:35,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-08 16:50:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 638. [2021-10-08 16:50:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 4.0) internal successors, (2548), 637 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2548 transitions. [2021-10-08 16:50:35,064 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2548 transitions. Word has length 24 [2021-10-08 16:50:35,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:35,064 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2548 transitions. [2021-10-08 16:50:35,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:35,065 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2548 transitions. [2021-10-08 16:50:35,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 16:50:35,068 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:35,068 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:35,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:35,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:35,283 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:35,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1185152089, now seen corresponding path program 2 times [2021-10-08 16:50:35,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:35,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133160097] [2021-10-08 16:50:35,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 16:50:35,285 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:35,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:35,287 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:35,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 16:50:35,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 16:50:35,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 16:50:35,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 16:50:35,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:50:35,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 16:50:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-08 16:50:36,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:50:36,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133160097] [2021-10-08 16:50:36,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133160097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 16:50:36,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:50:36,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 16:50:36,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879888164] [2021-10-08 16:50:36,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 16:50:36,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 16:50:36,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 16:50:36,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 16:50:36,129 INFO L87 Difference]: Start difference. First operand 638 states and 2548 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:36,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 16:50:36,397 INFO L93 Difference]: Finished difference Result 747 states and 2847 transitions. [2021-10-08 16:50:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 16:50:36,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 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 24 [2021-10-08 16:50:36,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 16:50:36,401 INFO L225 Difference]: With dead ends: 747 [2021-10-08 16:50:36,401 INFO L226 Difference]: Without dead ends: 638 [2021-10-08 16:50:36,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 16:50:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-08 16:50:36,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 608. [2021-10-08 16:50:36,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.8780889621087313) internal successors, (2354), 607 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2354 transitions. [2021-10-08 16:50:36,422 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2354 transitions. Word has length 24 [2021-10-08 16:50:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 16:50:36,422 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2354 transitions. [2021-10-08 16:50:36,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 16:50:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2354 transitions. [2021-10-08 16:50:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 16:50:36,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 16:50:36,425 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 16:50:36,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 16:50:36,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 16:50:36,640 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 16:50:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 16:50:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2075059607, now seen corresponding path program 1 times [2021-10-08 16:50:36,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 16:50:36,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620423844] [2021-10-08 16:50:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:50:36,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 16:50:36,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 16:50:36,643 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 16:50:36,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 16:50:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:50:37,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:50:37,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 16:50:37,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-10-08 16:50:37,385 INFO L354 Elim1Store]: treesize reduction 163, result has 15.1 percent of original size [2021-10-08 16:50:37,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-10-08 16:50:46,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:50:46,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:50:46,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:50:46,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:50:46,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:50:46,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 16:52:58,715 WARN L207 SmtUtils]: Spent 2.20 m on a formula simplification. DAG size of input: 347 DAG size of output: 117 [2021-10-08 16:52:58,717 INFO L354 Elim1Store]: treesize reduction 1702, result has 18.4 percent of original size [2021-10-08 16:52:58,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 33 case distinctions, treesize of input 117 treesize of output 436 [2021-10-08 16:59:54,004 WARN L228 Executor]: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-08 16:59:54,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-08 16:59:54,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 16:59:54,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620423844] [2021-10-08 16:59:54,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-08 16:59:54,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1050981476] [2021-10-08 16:59:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:59:54,010 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-08 16:59:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-08 16:59:54,011 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-08 16:59:54,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-08 16:59:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:59:55,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-08 16:59:55,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-08 16:59:55,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936829573] [2021-10-08 16:59:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 16:59:55,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 16:59:55,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 16:59:55,145 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 16:59:55,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-08 16:59:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 16:59:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 16:59:55,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by v_~break_7~0_207 [2021-10-08 16:59:55,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-08 16:59:55,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-08 16:59:55,792 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-08 16:59:55,792 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-08 16:59:55,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:59:55,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-08 16:59:55,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-08 16:59:55,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-08 16:59:55,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-08 16:59:55,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-08 16:59:55,798 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 16:59:55,799 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 16:59:55,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 16:59:55,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 16:59:55,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 16:59:55,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 16:59:55,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 16:59:55,800 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 16:59:55,801 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 16:59:55,801 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 16:59:55,801 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 16:59:55,801 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 16:59:55,801 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-08 16:59:55,802 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-08 16:59:55,802 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-08 16:59:55,802 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-08 16:59:55,802 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-08 16:59:55,802 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-08 16:59:55,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 16:59:56,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-08 16:59:56,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-08 16:59:56,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-08 16:59:56,421 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 16:59:56,421 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 16:59:56,423 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-08 16:59:56,426 INFO L168 Benchmark]: Toolchain (without parser) took 637617.79 ms. Allocated memory was 154.1 MB in the beginning and 197.1 MB in the end (delta: 43.0 MB). Free memory was 128.5 MB in the beginning and 52.2 MB in the end (delta: 76.3 MB). Peak memory consumption was 120.6 MB. Max. memory is 8.0 GB. [2021-10-08 16:59:56,426 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 16:59:56,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.39 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 112.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-08 16:59:56,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.08 ms. Allocated memory is still 154.1 MB. Free memory was 112.4 MB in the beginning and 109.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:59:56,428 INFO L168 Benchmark]: Boogie Preprocessor took 72.03 ms. Allocated memory is still 154.1 MB. Free memory was 109.6 MB in the beginning and 107.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 16:59:56,428 INFO L168 Benchmark]: RCFGBuilder took 2674.68 ms. Allocated memory is still 154.1 MB. Free memory was 107.3 MB in the beginning and 58.0 MB in the end (delta: 49.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-10-08 16:59:56,429 INFO L168 Benchmark]: TraceAbstraction took 634177.28 ms. Allocated memory was 154.1 MB in the beginning and 197.1 MB in the end (delta: 43.0 MB). Free memory was 57.5 MB in the beginning and 52.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. [2021-10-08 16:59:56,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 579.39 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 112.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 96.08 ms. Allocated memory is still 154.1 MB. Free memory was 112.4 MB in the beginning and 109.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.03 ms. Allocated memory is still 154.1 MB. Free memory was 109.6 MB in the beginning and 107.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2674.68 ms. Allocated memory is still 154.1 MB. Free memory was 107.3 MB in the beginning and 58.0 MB in the end (delta: 49.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 634177.28 ms. Allocated memory was 154.1 MB in the beginning and 197.1 MB in the end (delta: 43.0 MB). Free memory was 57.5 MB in the beginning and 52.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35318.9ms, 190 PlacesBefore, 55 PlacesAfterwards, 191 TransitionsBefore, 49 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 8 FixpointIterations, 116 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 10 ConcurrentYvCompositions, 7 ChoiceCompositions, 196 TotalNumberOfCompositions, 2817 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2685, positive: 2655, positive conditional: 0, positive unconditional: 2655, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1245, positive: 1240, positive conditional: 0, positive unconditional: 1240, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1245, positive: 1240, positive conditional: 0, positive unconditional: 1240, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 481, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 481, negative conditional: 0, negative unconditional: 481, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2685, positive: 1415, positive conditional: 0, positive unconditional: 1415, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 1245, unknown conditional: 0, unknown unconditional: 1245] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 112, Positive conditional cache size: 0, Positive unconditional cache size: 112, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...