/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/sre-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:10:47,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:10:47,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:10:47,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:10:47,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 21:10:47,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 21:10:47,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 21:10:47,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 21:10:47,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 21:10:47,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 21:10:47,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 21:10:47,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 21:10:47,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 21:10:47,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 21:10:47,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 21:10:47,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 21:10:47,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 21:10:47,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 21:10:47,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 21:10:47,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 21:10:47,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 21:10:47,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 21:10:47,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 21:10:47,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 21:10:47,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 21:10:47,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:10:47,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:10:47,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:10:47,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:10:47,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:10:47,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:10:47,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:10:47,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:10:47,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:10:47,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:10:47,595 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:10:47,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:10:47,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:10:47,596 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:10:47,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:10:47,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:10:47,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:10:47,597 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:10:47,597 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:10:47,597 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:10:47,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:10:47,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:10:47,598 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:10:47,598 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:10:47,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:10:47,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:10:47,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:10:47,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:10:47,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:10:47,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:10:47,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:10:47,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:10:47,601 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:10:47,601 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:10:47,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:10:47,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:10:47,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:10:47,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:10:48,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:10:48,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:10:48,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:10:48,022 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:10:48,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/sre-trans.wvr.c [2021-10-06 21:10:48,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4322eb64f/03f54473ca4e4dc3b86a9abebdeaabcf/FLAG95805dff1 [2021-10-06 21:10:48,794 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:10:48,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/sre-trans.wvr.c [2021-10-06 21:10:48,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4322eb64f/03f54473ca4e4dc3b86a9abebdeaabcf/FLAG95805dff1 [2021-10-06 21:10:49,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4322eb64f/03f54473ca4e4dc3b86a9abebdeaabcf [2021-10-06 21:10:49,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:10:49,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:10:49,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:10:49,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:10:49,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:10:49,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19344fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49, skipping insertion in model container [2021-10-06 21:10:49,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:10:49,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:10:49,461 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/sre-trans.wvr.c[2216,2229] [2021-10-06 21:10:49,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:10:49,481 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:10:49,503 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/sre-trans.wvr.c[2216,2229] [2021-10-06 21:10:49,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:10:49,522 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:10:49,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49 WrapperNode [2021-10-06 21:10:49,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:10:49,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:10:49,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:10:49,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:10:49,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:10:49,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:10:49,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:10:49,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:10:49,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:10:49,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:10:49,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:10:49,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:10:49,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (1/1) ... [2021-10-06 21:10:49,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:10:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:10:49,644 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) [2021-10-06 21:10:49,667 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 [2021-10-06 21:10:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:10:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:10:49,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:10:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:10:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:10:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:10:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:10:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:10:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:10:49,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:10:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:10:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:10:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:10:49,718 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:10:50,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:10:50,141 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-06 21:10:50,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:10:50 BoogieIcfgContainer [2021-10-06 21:10:50,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:10:50,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:10:50,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:10:50,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:10:50,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:10:49" (1/3) ... [2021-10-06 21:10:50,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782653bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:10:50, skipping insertion in model container [2021-10-06 21:10:50,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:10:49" (2/3) ... [2021-10-06 21:10:50,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782653bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:10:50, skipping insertion in model container [2021-10-06 21:10:50,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:10:50" (3/3) ... [2021-10-06 21:10:50,153 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-trans.wvr.c [2021-10-06 21:10:50,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:10:50,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 21:10:50,160 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:10:50,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,197 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,198 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,199 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,200 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,201 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,202 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,202 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,202 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,202 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,203 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,203 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,203 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,203 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,204 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,205 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,205 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,206 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,206 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,206 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,206 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,207 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,208 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,209 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,209 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,212 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,213 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,213 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,213 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,222 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,223 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:10:50,232 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:10:50,285 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:10:50,294 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 [2021-10-06 21:10:50,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 21:10:50,312 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:10:50,324 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 120 transitions, 264 flow [2021-10-06 21:10:50,328 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 120 transitions, 264 flow [2021-10-06 21:10:50,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 120 transitions, 264 flow [2021-10-06 21:10:50,394 INFO L129 PetriNetUnfolder]: 7/117 cut-off events. [2021-10-06 21:10:50,394 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:10:50,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 117 events. 7/117 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2021-10-06 21:10:50,408 INFO L116 LiptonReduction]: Number of co-enabled transitions 2160 [2021-10-06 21:11:00,279 INFO L131 LiptonReduction]: Checked pairs total: 2279 [2021-10-06 21:11:00,279 INFO L133 LiptonReduction]: Total number of compositions: 132 [2021-10-06 21:11:00,289 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 33 transitions, 90 flow [2021-10-06 21:11:00,305 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:11:00,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:00,314 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:11:00,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:00,321 INFO L82 PathProgramCache]: Analyzing trace with hash 469, now seen corresponding path program 1 times [2021-10-06 21:11:00,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:00,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962963084] [2021-10-06 21:11:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:00,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:00,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:00,344 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) [2021-10-06 21:11:00,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:11:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:00,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:11:00,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:00,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:00,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:00,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962963084] [2021-10-06 21:11:00,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962963084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:00,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:00,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:11:00,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296688005] [2021-10-06 21:11:00,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:11:00,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:11:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:11:00,491 INFO L87 Difference]: Start difference. First operand has 87 states, 73 states have (on average 2.287671232876712) internal successors, (167), 86 states have internal predecessors, (167), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:00,509 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2021-10-06 21:11:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:11:00,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 21:11:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:00,522 INFO L225 Difference]: With dead ends: 84 [2021-10-06 21:11:00,522 INFO L226 Difference]: Without dead ends: 84 [2021-10-06 21:11:00,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:11:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-06 21:11:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-06 21:11:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 2.2465753424657535) internal successors, (164), 83 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2021-10-06 21:11:00,569 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 1 [2021-10-06 21:11:00,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:00,569 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2021-10-06 21:11:00,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2021-10-06 21:11:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:11:00,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:00,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:11:00,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:11:00,777 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 [2021-10-06 21:11:00,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash 459545, now seen corresponding path program 1 times [2021-10-06 21:11:00,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:00,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226250873] [2021-10-06 21:11:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:00,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:00,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:00,783 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) [2021-10-06 21:11:00,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:11:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:00,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:11:00,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:01,163 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:11:01,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 61 [2021-10-06 21:11:01,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2021-10-06 21:11:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:01,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:01,569 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:01,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226250873] [2021-10-06 21:11:01,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226250873] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:01,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:01,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:11:01,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095521958] [2021-10-06 21:11:01,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:01,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:01,573 INFO L87 Difference]: Start difference. First operand 84 states and 164 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) [2021-10-06 21:11:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:01,637 INFO L93 Difference]: Finished difference Result 78 states and 153 transitions. [2021-10-06 21:11:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:01,638 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 3 [2021-10-06 21:11:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:01,640 INFO L225 Difference]: With dead ends: 78 [2021-10-06 21:11:01,640 INFO L226 Difference]: Without dead ends: 78 [2021-10-06 21:11:01,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-06 21:11:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-06 21:11:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.217391304347826) internal successors, (153), 77 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 153 transitions. [2021-10-06 21:11:01,652 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 153 transitions. Word has length 3 [2021-10-06 21:11:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:01,653 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 153 transitions. [2021-10-06 21:11:01,653 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) [2021-10-06 21:11:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 153 transitions. [2021-10-06 21:11:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:11:01,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:01,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:11:01,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-06 21:11:01,867 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 [2021-10-06 21:11:01,868 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash 459546, now seen corresponding path program 1 times [2021-10-06 21:11:01,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:01,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216800576] [2021-10-06 21:11:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:01,872 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:01,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:01,873 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) [2021-10-06 21:11:01,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:11:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:01,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:11:01,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:01,966 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:11:01,967 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 2 case distinctions, treesize of input 27 treesize of output 34 [2021-10-06 21:11:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:02,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:02,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:02,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216800576] [2021-10-06 21:11:02,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216800576] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:02,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:02,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:11:02,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505082396] [2021-10-06 21:11:02,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:02,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:02,148 INFO L87 Difference]: Start difference. First operand 78 states and 153 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) [2021-10-06 21:11:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:02,186 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2021-10-06 21:11:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:02,189 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 3 [2021-10-06 21:11:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:02,190 INFO L225 Difference]: With dead ends: 72 [2021-10-06 21:11:02,190 INFO L226 Difference]: Without dead ends: 72 [2021-10-06 21:11:02,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-06 21:11:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-10-06 21:11:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 2.1846153846153844) internal successors, (142), 71 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 142 transitions. [2021-10-06 21:11:02,202 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 142 transitions. Word has length 3 [2021-10-06 21:11:02,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:02,203 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 142 transitions. [2021-10-06 21:11:02,203 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) [2021-10-06 21:11:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 142 transitions. [2021-10-06 21:11:02,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:11:02,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:02,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:11:02,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:02,411 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 [2021-10-06 21:11:02,412 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:02,414 INFO L82 PathProgramCache]: Analyzing trace with hash 441631516, now seen corresponding path program 1 times [2021-10-06 21:11:02,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:02,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582073362] [2021-10-06 21:11:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:02,415 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:02,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:02,417 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) [2021-10-06 21:11:02,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:11:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:02,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:11:02,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:02,664 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:11:02,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:11:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:02,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:02,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:02,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582073362] [2021-10-06 21:11:02,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582073362] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:02,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:02,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:11:02,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247579796] [2021-10-06 21:11:02,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:02,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:02,861 INFO L87 Difference]: Start difference. First operand 72 states and 142 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) [2021-10-06 21:11:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:02,902 INFO L93 Difference]: Finished difference Result 66 states and 131 transitions. [2021-10-06 21:11:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:02,903 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 5 [2021-10-06 21:11:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:02,904 INFO L225 Difference]: With dead ends: 66 [2021-10-06 21:11:02,904 INFO L226 Difference]: Without dead ends: 66 [2021-10-06 21:11:02,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-06 21:11:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-06 21:11:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 2.1475409836065573) internal successors, (131), 65 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2021-10-06 21:11:02,913 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 5 [2021-10-06 21:11:02,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:02,914 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2021-10-06 21:11:02,914 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) [2021-10-06 21:11:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2021-10-06 21:11:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:11:02,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:02,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:11:02,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:03,128 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 [2021-10-06 21:11:03,129 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash 441631514, now seen corresponding path program 1 times [2021-10-06 21:11:03,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:03,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341049998] [2021-10-06 21:11:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:03,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:03,134 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) [2021-10-06 21:11:03,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:11:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:03,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:11:03,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:03,226 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:11:03,227 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:11:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:03,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:03,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:03,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341049998] [2021-10-06 21:11:03,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341049998] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:03,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:03,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:11:03,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97863271] [2021-10-06 21:11:03,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:11:03,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:03,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:11:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:11:03,279 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:03,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:03,307 INFO L93 Difference]: Finished difference Result 60 states and 120 transitions. [2021-10-06 21:11:03,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:11:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:03,309 INFO L225 Difference]: With dead ends: 60 [2021-10-06 21:11:03,309 INFO L226 Difference]: Without dead ends: 60 [2021-10-06 21:11:03,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:11:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-06 21:11:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-10-06 21:11:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 59 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2021-10-06 21:11:03,316 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 5 [2021-10-06 21:11:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:03,316 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2021-10-06 21:11:03,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2021-10-06 21:11:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:11:03,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:03,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:03,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:03,529 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 [2021-10-06 21:11:03,530 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:03,531 INFO L82 PathProgramCache]: Analyzing trace with hash -793866576, now seen corresponding path program 1 times [2021-10-06 21:11:03,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:03,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000743420] [2021-10-06 21:11:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:03,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:03,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:03,534 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) [2021-10-06 21:11:03,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:11:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:03,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:11:03,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:03,640 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:11:03,641 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:11:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:03,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:03,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:03,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000743420] [2021-10-06 21:11:03,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000743420] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:03,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:03,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:11:03,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802672020] [2021-10-06 21:11:03,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:11:03,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:11:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:11:03,774 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-06 21:11:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:03,811 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2021-10-06 21:11:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:03,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2021-10-06 21:11:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:03,812 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:11:03,813 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:11:03,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:11:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:11:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:11:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 2.0) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 100 transitions. [2021-10-06 21:11:03,818 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 100 transitions. Word has length 7 [2021-10-06 21:11:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:03,818 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 100 transitions. [2021-10-06 21:11:03,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-06 21:11:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 100 transitions. [2021-10-06 21:11:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:11:03,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:03,820 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:03,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:04,030 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 [2021-10-06 21:11:04,031 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:04,032 INFO L82 PathProgramCache]: Analyzing trace with hash -793866575, now seen corresponding path program 1 times [2021-10-06 21:11:04,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:04,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442232938] [2021-10-06 21:11:04,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:04,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:04,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:04,035 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) [2021-10-06 21:11:04,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:11:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:04,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:11:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:04,270 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:11:04,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 61 [2021-10-06 21:11:04,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2021-10-06 21:11:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:04,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:04,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:04,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442232938] [2021-10-06 21:11:04,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442232938] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:04,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:04,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:11:04,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350383265] [2021-10-06 21:11:04,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:11:04,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:04,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:11:04,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:04,822 INFO L87 Difference]: Start difference. First operand 52 states and 100 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) [2021-10-06 21:11:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:04,846 INFO L93 Difference]: Finished difference Result 44 states and 80 transitions. [2021-10-06 21:11:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:11:04,847 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 7 [2021-10-06 21:11:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:04,848 INFO L225 Difference]: With dead ends: 44 [2021-10-06 21:11:04,848 INFO L226 Difference]: Without dead ends: 44 [2021-10-06 21:11:04,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:11:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-06 21:11:04,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-06 21:11:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 80 transitions. [2021-10-06 21:11:04,852 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 80 transitions. Word has length 7 [2021-10-06 21:11:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:04,852 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 80 transitions. [2021-10-06 21:11:04,853 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) [2021-10-06 21:11:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 80 transitions. [2021-10-06 21:11:04,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:11:04,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:04,854 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:04,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:05,054 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 [2021-10-06 21:11:05,056 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:05,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1517294576, now seen corresponding path program 1 times [2021-10-06 21:11:05,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:05,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112836006] [2021-10-06 21:11:05,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:11:05,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:05,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:05,060 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) [2021-10-06 21:11:05,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:11:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:11:05,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:11:05,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:05,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:06,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:06,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112836006] [2021-10-06 21:11:06,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112836006] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:06,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:06,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:11:06,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312918202] [2021-10-06 21:11:06,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:11:06,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:11:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:11:06,098 INFO L87 Difference]: Start difference. First operand 44 states and 80 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:06,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:06,172 INFO L93 Difference]: Finished difference Result 59 states and 99 transitions. [2021-10-06 21:11:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:11:06,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:11:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:06,174 INFO L225 Difference]: With dead ends: 59 [2021-10-06 21:11:06,174 INFO L226 Difference]: Without dead ends: 32 [2021-10-06 21:11:06,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:11:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-06 21:11:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-06 21:11:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 48 transitions. [2021-10-06 21:11:06,178 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 48 transitions. Word has length 16 [2021-10-06 21:11:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:06,178 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 48 transitions. [2021-10-06 21:11:06,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:06,179 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 48 transitions. [2021-10-06 21:11:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:11:06,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:11:06,180 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:11:06,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:06,380 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 [2021-10-06 21:11:06,381 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:11:06,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:11:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1627635366, now seen corresponding path program 2 times [2021-10-06 21:11:06,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:11:06,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354771891] [2021-10-06 21:11:06,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:11:06,384 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:11:06,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:11:06,387 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) [2021-10-06 21:11:06,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:11:06,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:11:06,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:11:06,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:11:06,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:11:07,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:07,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:11:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:11:07,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:11:07,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354771891] [2021-10-06 21:11:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354771891] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:11:07,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:11:07,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:11:07,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954179480] [2021-10-06 21:11:07,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:11:07,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:11:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:11:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:11:07,219 INFO L87 Difference]: Start difference. First operand 32 states and 48 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:11:07,305 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2021-10-06 21:11:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:11:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-06 21:11:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:11:07,306 INFO L225 Difference]: With dead ends: 31 [2021-10-06 21:11:07,306 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 21:11:07,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-06 21:11:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 21:11:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 21:11:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 21:11:07,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-06 21:11:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:11:07,308 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 21:11:07,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:11:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 21:11:07,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 21:11:07,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:11:07,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:11:07,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:11:07,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:11:07,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:11:07,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:11:07,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:11:07,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:11:07,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:11:07,313 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:11:07,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:11:07,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:11:07,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:11:07,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:11:07,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:11:07,315 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:11:07,315 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:11:07,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:11:07,527 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 [2021-10-06 21:11:07,533 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:11:07,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:11:07,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:11:07 BasicIcfg [2021-10-06 21:11:07,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:11:07,536 INFO L168 Benchmark]: Toolchain (without parser) took 18405.19 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 126.5 MB in the beginning and 82.1 MB in the end (delta: 44.4 MB). Peak memory consumption was 80.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:07,537 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:11:07,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.03 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 115.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:07,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:07,539 INFO L168 Benchmark]: Boogie Preprocessor took 30.33 ms. Allocated memory is still 152.0 MB. Free memory was 113.9 MB in the beginning and 112.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:07,539 INFO L168 Benchmark]: RCFGBuilder took 541.28 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 131.6 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:07,540 INFO L168 Benchmark]: TraceAbstraction took 17389.58 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 131.1 MB in the beginning and 82.1 MB in the end (delta: 49.0 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:11:07,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 382.03 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 115.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 152.0 MB. Free memory was 115.4 MB in the beginning and 113.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.33 ms. Allocated memory is still 152.0 MB. Free memory was 113.9 MB in the beginning and 112.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 541.28 ms. Allocated memory is still 152.0 MB. Free memory was 112.5 MB in the beginning and 131.6 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17389.58 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 131.1 MB in the beginning and 82.1 MB in the end (delta: 49.0 MB). Peak memory consumption was 83.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9951.5ms, 123 PlacesBefore, 43 PlacesAfterwards, 120 TransitionsBefore, 33 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 7 ChoiceCompositions, 132 TotalNumberOfCompositions, 2279 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2279, positive: 2279, positive conditional: 0, positive unconditional: 2279, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1582, positive: 1582, positive conditional: 0, positive unconditional: 1582, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1582, positive: 1582, positive conditional: 0, positive unconditional: 1582, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2279, positive: 697, positive conditional: 0, positive unconditional: 697, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1582, unknown conditional: 0, unknown unconditional: 1582] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 63]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 63]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 64]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 66]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 67]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 53]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 150 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 17249.8ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 13.5ms, AutomataDifference: 480.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10011.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 128 SDtfs, 215 SDslu, 26 SDs, 0 SdLazy, 53 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 196.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 420.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 78.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 97.5ms SsaConstructionTime, 275.0ms SatisfiabilityAnalysisTime, 3893.1ms InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 108 ConstructedInterpolants, 10 QuantifiedInterpolants, 1692 SizeOfPredicates, 39 NumberOfNonLiveVariables, 429 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 21:11:07,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...