/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/spaghetti.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:56:55,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:56:55,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:56:55,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-06 20:56:55,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-06 20:56:55,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-06 20:56:55,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-06 20:56:55,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-06 20:56:55,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-06 20:56:55,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-06 20:56:55,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-06 20:56:55,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-06 20:56:55,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-06 20:56:55,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-06 20:56:55,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-06 20:56:55,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-06 20:56:55,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-06 20:56:55,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-06 20:56:55,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-06 20:56:55,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-06 20:56:55,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-06 20:56:55,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-06 20:56:55,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-06 20:56:55,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-06 20:56:55,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-06 20:56:55,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-06 20:56:55,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-06 20:56:55,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-06 20:56:55,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-06 20:56:55,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-06 20:56:55,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-06 20:56:55,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-06 20:56:55,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-06 20:56:55,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 20:56:55,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 20:56:55,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 20:56:55,759 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 20:56:55,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:56:55,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:56:55,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:56:55,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:56:55,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:56:55,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:56:55,828 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:56:55,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:56:55,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:56:55,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:56:55,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:56:55,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:56:55,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:56:55,831 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:56:55,831 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:56:55,832 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:56:55,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:56:55,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:56:55,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:56:55,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:56:55,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:56:55,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:56:55,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:56:55,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:56:55,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:56:55,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:55,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:56:55,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:56:55,835 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:56:55,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:56:55,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:56:55,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:56:55,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:56:56,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:56:56,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:56:56,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:56:56,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:56:56,290 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:56:56,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-06 20:56:56,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1f4af637/b0428c369dff4775948f31683b4e0b9c/FLAG0a110dd6c [2021-10-06 20:56:57,011 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:56:57,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-06 20:56:57,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1f4af637/b0428c369dff4775948f31683b4e0b9c/FLAG0a110dd6c [2021-10-06 20:56:57,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1f4af637/b0428c369dff4775948f31683b4e0b9c [2021-10-06 20:56:57,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:56:57,386 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:56:57,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:57,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:56:57,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:56:57,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb2448c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57, skipping insertion in model container [2021-10-06 20:56:57,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:56:57,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:56:57,630 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/spaghetti.wvr.c[2315,2328] [2021-10-06 20:56:57,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,657 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:56:57,684 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/spaghetti.wvr.c[2315,2328] [2021-10-06 20:56:57,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,706 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:56:57,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57 WrapperNode [2021-10-06 20:56:57,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:57,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:56:57,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:56:57,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:56:57,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:56:57,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:56:57,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:56:57,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:56:57,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:57,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:56:57,841 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 20:56:57,857 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 20:56:57,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:56:57,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:56:57,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:56:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:56:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 20:56:57,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 20:56:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:56:57,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-06 20:56:57,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-06 20:56:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:56:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:56:57,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:56:57,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:56:57,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:56:57,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:56:57,927 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 20:56:58,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:56:58,619 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 20:56:58,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:58 BoogieIcfgContainer [2021-10-06 20:56:58,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:56:58,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:56:58,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:56:58,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:56:58,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:56:57" (1/3) ... [2021-10-06 20:56:58,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da0804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:58, skipping insertion in model container [2021-10-06 20:56:58,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (2/3) ... [2021-10-06 20:56:58,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2da0804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:58, skipping insertion in model container [2021-10-06 20:56:58,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:58" (3/3) ... [2021-10-06 20:56:58,638 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2021-10-06 20:56:58,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:56:58,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-10-06 20:56:58,646 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:56:58,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,724 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,725 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,725 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,725 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,725 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,726 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,726 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,726 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,726 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,727 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,731 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,735 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,740 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,740 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,740 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,741 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,742 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,742 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,742 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,743 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,743 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,744 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,745 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,745 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,745 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,745 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,746 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,746 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,746 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,755 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,755 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,762 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,763 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,767 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,769 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,769 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,769 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,784 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-06 20:56:58,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:56:58,866 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 20:56:58,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-10-06 20:56:58,904 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:56:58,917 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 135 transitions, 302 flow [2021-10-06 20:56:58,921 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 135 transitions, 302 flow [2021-10-06 20:56:58,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 135 transitions, 302 flow [2021-10-06 20:56:58,986 INFO L129 PetriNetUnfolder]: 9/131 cut-off events. [2021-10-06 20:56:58,987 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-06 20:56:58,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 9/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2021-10-06 20:56:59,000 INFO L116 LiptonReduction]: Number of co-enabled transitions 3168 [2021-10-06 20:57:12,914 INFO L131 LiptonReduction]: Checked pairs total: 4951 [2021-10-06 20:57:12,914 INFO L133 LiptonReduction]: Total number of compositions: 124 [2021-10-06 20:57:12,924 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 51 transitions, 134 flow [2021-10-06 20:57:12,985 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states 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 20:57:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states 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 20:57:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:57:12,997 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:12,998 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:57:12,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash 501, now seen corresponding path program 1 times [2021-10-06 20:57:13,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:13,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241647959] [2021-10-06 20:57:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:13,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:13,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:13,023 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 20:57:13,027 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 20:57:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:13,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:57:13,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:13,090 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 20:57:13,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:13,091 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 20:57:13,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:13,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241647959] [2021-10-06 20:57:13,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241647959] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:13,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:13,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:57:13,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078424510] [2021-10-06 20:57:13,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:57:13,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:13,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:57:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:13,122 INFO L87 Difference]: Start difference. First operand has 643 states, 625 states have (on average 4.2784) internal successors, (2674), 642 states have internal predecessors, (2674), 0 states have call successors, (0), 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 20:57:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:13,177 INFO L93 Difference]: Finished difference Result 640 states and 2671 transitions. [2021-10-06 20:57:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:57:13,179 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 20:57:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:13,209 INFO L225 Difference]: With dead ends: 640 [2021-10-06 20:57:13,210 INFO L226 Difference]: Without dead ends: 640 [2021-10-06 20:57:13,211 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 20:57:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-06 20:57:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2021-10-06 20:57:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 625 states have (on average 4.2736) internal successors, (2671), 639 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states 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 20:57:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2671 transitions. [2021-10-06 20:57:13,370 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2671 transitions. Word has length 1 [2021-10-06 20:57:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:13,371 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 2671 transitions. [2021-10-06 20:57:13,371 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 20:57:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2671 transitions. [2021-10-06 20:57:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:13,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:13,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:13,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:13,573 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 20:57:13,573 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:13,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:13,575 INFO L82 PathProgramCache]: Analyzing trace with hash 494409, now seen corresponding path program 1 times [2021-10-06 20:57:13,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:13,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092180633] [2021-10-06 20:57:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:13,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:13,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:13,579 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 20:57:13,584 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 20:57:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:13,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:13,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:14,078 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 20:57:14,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 312 treesize of output 349 [2021-10-06 20:57:18,175 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 20:57:18,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:18,191 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 20:57:18,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:18,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092180633] [2021-10-06 20:57:18,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092180633] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:18,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:18,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:18,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710956134] [2021-10-06 20:57:18,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:18,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:18,196 INFO L87 Difference]: Start difference. First operand 640 states and 2671 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 20:57:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:18,302 INFO L93 Difference]: Finished difference Result 610 states and 2557 transitions. [2021-10-06 20:57:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:18,302 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 20:57:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:18,312 INFO L225 Difference]: With dead ends: 610 [2021-10-06 20:57:18,312 INFO L226 Difference]: Without dead ends: 610 [2021-10-06 20:57:18,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-10-06 20:57:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2021-10-06 20:57:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 597 states have (on average 4.283082077051926) internal successors, (2557), 609 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states 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 20:57:18,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2557 transitions. [2021-10-06 20:57:18,352 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2557 transitions. Word has length 3 [2021-10-06 20:57:18,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:18,353 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 2557 transitions. [2021-10-06 20:57:18,353 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 20:57:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2557 transitions. [2021-10-06 20:57:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:18,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:18,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:18,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:18,567 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 20:57:18,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:18,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash 494411, now seen corresponding path program 1 times [2021-10-06 20:57:18,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:18,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743440463] [2021-10-06 20:57:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:18,571 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:18,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:18,573 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 20:57:18,575 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 20:57:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:18,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:18,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:18,847 INFO L354 Elim1Store]: treesize reduction 237, result has 17.1 percent of original size [2021-10-06 20:57:18,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 74 [2021-10-06 20:57:18,860 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 267 treesize of output 263 [2021-10-06 20:57:20,081 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 20:57:20,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:20,142 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 20:57:20,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:20,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743440463] [2021-10-06 20:57:20,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743440463] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:20,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:20,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:20,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323935498] [2021-10-06 20:57:20,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:20,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:20,145 INFO L87 Difference]: Start difference. First operand 610 states and 2557 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 20:57:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:20,219 INFO L93 Difference]: Finished difference Result 580 states and 2443 transitions. [2021-10-06 20:57:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:20,220 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 20:57:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:20,227 INFO L225 Difference]: With dead ends: 580 [2021-10-06 20:57:20,227 INFO L226 Difference]: Without dead ends: 580 [2021-10-06 20:57:20,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-10-06 20:57:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-10-06 20:57:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 569 states have (on average 4.293497363796134) internal successors, (2443), 579 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states 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 20:57:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 2443 transitions. [2021-10-06 20:57:20,257 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 2443 transitions. Word has length 3 [2021-10-06 20:57:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:20,258 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 2443 transitions. [2021-10-06 20:57:20,258 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 20:57:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 2443 transitions. [2021-10-06 20:57:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:20,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:20,259 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:20,274 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 20:57:20,471 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 20:57:20,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:20,473 INFO L82 PathProgramCache]: Analyzing trace with hash 475139144, now seen corresponding path program 1 times [2021-10-06 20:57:20,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:20,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885826233] [2021-10-06 20:57:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:20,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:20,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:20,476 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 20:57:20,477 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 20:57:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:20,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:20,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:20,796 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 20:57:20,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 20:57:21,355 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 20:57:21,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:21,368 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 20:57:21,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:21,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885826233] [2021-10-06 20:57:21,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885826233] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:21,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:21,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:21,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089015135] [2021-10-06 20:57:21,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:21,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:21,371 INFO L87 Difference]: Start difference. First operand 580 states and 2443 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 20:57:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:21,434 INFO L93 Difference]: Finished difference Result 562 states and 2389 transitions. [2021-10-06 20:57:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:21,435 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 20:57:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:21,443 INFO L225 Difference]: With dead ends: 562 [2021-10-06 20:57:21,443 INFO L226 Difference]: Without dead ends: 562 [2021-10-06 20:57:21,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-06 20:57:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-06 20:57:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 553 states have (on average 4.320072332730561) internal successors, (2389), 561 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states 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 20:57:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 2389 transitions. [2021-10-06 20:57:21,476 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 2389 transitions. Word has length 5 [2021-10-06 20:57:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:21,476 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 2389 transitions. [2021-10-06 20:57:21,476 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 20:57:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 2389 transitions. [2021-10-06 20:57:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:21,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:21,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:21,499 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 20:57:21,693 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 20:57:21,694 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:21,695 INFO L82 PathProgramCache]: Analyzing trace with hash 475139145, now seen corresponding path program 1 times [2021-10-06 20:57:21,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:21,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768604545] [2021-10-06 20:57:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:21,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:21,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:21,698 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 20:57:21,714 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 20:57:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:21,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:21,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:22,008 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 20:57:22,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-06 20:57:22,106 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 20:57:22,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:22,174 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 20:57:22,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:22,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768604545] [2021-10-06 20:57:22,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768604545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:22,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:22,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:22,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034526761] [2021-10-06 20:57:22,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:22,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:22,177 INFO L87 Difference]: Start difference. First operand 562 states and 2389 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 20:57:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:22,234 INFO L93 Difference]: Finished difference Result 544 states and 2335 transitions. [2021-10-06 20:57:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:22,235 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 20:57:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:22,242 INFO L225 Difference]: With dead ends: 544 [2021-10-06 20:57:22,242 INFO L226 Difference]: Without dead ends: 544 [2021-10-06 20:57:22,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:22,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-06 20:57:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-10-06 20:57:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 537 states have (on average 4.348230912476723) internal successors, (2335), 543 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states 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 20:57:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 2335 transitions. [2021-10-06 20:57:22,270 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 2335 transitions. Word has length 5 [2021-10-06 20:57:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:22,270 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 2335 transitions. [2021-10-06 20:57:22,271 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 20:57:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 2335 transitions. [2021-10-06 20:57:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 20:57:22,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:22,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:22,285 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 20:57:22,485 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 20:57:22,486 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:22,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1342194126, now seen corresponding path program 1 times [2021-10-06 20:57:22,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:22,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066856492] [2021-10-06 20:57:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:22,488 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:22,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:22,490 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 20:57:22,495 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 20:57:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:22,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:22,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:22,798 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 20:57:22,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 20:57:23,356 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 20:57:23,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:23,379 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 20:57:23,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:23,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066856492] [2021-10-06 20:57:23,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066856492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:23,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:23,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:23,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757789491] [2021-10-06 20:57:23,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:23,396 INFO L87 Difference]: Start difference. First operand 544 states and 2335 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:23,437 INFO L93 Difference]: Finished difference Result 514 states and 2221 transitions. [2021-10-06 20:57:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:23,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 20:57:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:23,444 INFO L225 Difference]: With dead ends: 514 [2021-10-06 20:57:23,444 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 20:57:23,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 20:57:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2021-10-06 20:57:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 509 states have (on average 4.363457760314342) internal successors, (2221), 513 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states 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 20:57:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 2221 transitions. [2021-10-06 20:57:23,471 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 2221 transitions. Word has length 7 [2021-10-06 20:57:23,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:23,472 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 2221 transitions. [2021-10-06 20:57:23,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,472 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 2221 transitions. [2021-10-06 20:57:23,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 20:57:23,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:23,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:23,490 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 20:57:23,685 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 20:57:23,686 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1342194127, now seen corresponding path program 1 times [2021-10-06 20:57:23,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:23,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44755742] [2021-10-06 20:57:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:23,691 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:23,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:23,699 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 20:57:23,703 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 20:57:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:23,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:23,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:23,999 INFO L354 Elim1Store]: treesize reduction 231, result has 19.2 percent of original size [2021-10-06 20:57:23,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 60 [2021-10-06 20:57:24,125 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 20:57:24,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:24,222 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 20:57:24,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:24,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44755742] [2021-10-06 20:57:24,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44755742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:24,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:24,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:24,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602921760] [2021-10-06 20:57:24,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:24,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:24,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:24,229 INFO L87 Difference]: Start difference. First operand 514 states and 2221 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 20:57:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:24,279 INFO L93 Difference]: Finished difference Result 484 states and 2107 transitions. [2021-10-06 20:57:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:24,280 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 20:57:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:24,286 INFO L225 Difference]: With dead ends: 484 [2021-10-06 20:57:24,286 INFO L226 Difference]: Without dead ends: 484 [2021-10-06 20:57:24,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-06 20:57:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-10-06 20:57:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 481 states have (on average 4.38045738045738) internal successors, (2107), 483 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states 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 20:57:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 2107 transitions. [2021-10-06 20:57:24,312 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 2107 transitions. Word has length 7 [2021-10-06 20:57:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:24,312 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 2107 transitions. [2021-10-06 20:57:24,313 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 20:57:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 2107 transitions. [2021-10-06 20:57:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 20:57:24,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:24,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:24,333 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 20:57:24,528 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 20:57:24,529 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1358379384, now seen corresponding path program 1 times [2021-10-06 20:57:24,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:24,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399498576] [2021-10-06 20:57:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:24,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:24,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:24,531 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 20:57:24,569 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 20:57:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:24,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:24,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:24,845 INFO L354 Elim1Store]: treesize reduction 350, result has 15.7 percent of original size [2021-10-06 20:57:24,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 24 treesize of output 70 [2021-10-06 20:57:25,290 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 20:57:25,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:25,384 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 20:57:25,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:25,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399498576] [2021-10-06 20:57:25,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399498576] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:25,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:25,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 20:57:25,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495144265] [2021-10-06 20:57:25,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-06 20:57:25,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-06 20:57:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:25,387 INFO L87 Difference]: Start difference. First operand 484 states and 2107 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 20:57:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:25,451 INFO L93 Difference]: Finished difference Result 403 states and 1702 transitions. [2021-10-06 20:57:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:25,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 20:57:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:25,457 INFO L225 Difference]: With dead ends: 403 [2021-10-06 20:57:25,457 INFO L226 Difference]: Without dead ends: 403 [2021-10-06 20:57:25,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-06 20:57:25,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-10-06 20:57:25,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-10-06 20:57:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 401 states have (on average 4.2443890274314215) internal successors, (1702), 402 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states 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 20:57:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1702 transitions. [2021-10-06 20:57:25,476 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1702 transitions. Word has length 9 [2021-10-06 20:57:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:25,477 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 1702 transitions. [2021-10-06 20:57:25,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 20:57:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1702 transitions. [2021-10-06 20:57:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-06 20:57:25,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:25,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:25,501 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 20:57:25,696 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 20:57:25,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:25,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1358379385, now seen corresponding path program 1 times [2021-10-06 20:57:25,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:25,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757576556] [2021-10-06 20:57:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:25,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:25,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:25,700 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 20:57:25,703 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 20:57:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:25,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:25,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:25,892 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 20:57:25,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:25,973 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 20:57:25,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:25,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757576556] [2021-10-06 20:57:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757576556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:25,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:25,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:25,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463518929] [2021-10-06 20:57:25,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:25,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:25,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:25,976 INFO L87 Difference]: Start difference. First operand 403 states and 1702 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:26,013 INFO L93 Difference]: Finished difference Result 322 states and 1297 transitions. [2021-10-06 20:57:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:26,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-06 20:57:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:26,018 INFO L225 Difference]: With dead ends: 322 [2021-10-06 20:57:26,018 INFO L226 Difference]: Without dead ends: 322 [2021-10-06 20:57:26,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-10-06 20:57:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-10-06 20:57:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1297 transitions. [2021-10-06 20:57:26,033 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1297 transitions. Word has length 9 [2021-10-06 20:57:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:26,033 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1297 transitions. [2021-10-06 20:57:26,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1297 transitions. [2021-10-06 20:57:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 20:57:26,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:26,040 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:26,053 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 20:57:26,252 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 20:57:26,253 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:26,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1194962484, now seen corresponding path program 1 times [2021-10-06 20:57:26,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:26,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745020007] [2021-10-06 20:57:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:26,255 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:26,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:26,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:26,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 20:57:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:26,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 20:57:26,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:26,416 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 20:57:26,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:26,462 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 20:57:26,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:26,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745020007] [2021-10-06 20:57:26,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745020007] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:26,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:26,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-06 20:57:26,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851293779] [2021-10-06 20:57:26,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:57:26,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:57:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 20:57:26,465 INFO L87 Difference]: Start difference. First operand 322 states and 1297 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:26,626 INFO L93 Difference]: Finished difference Result 481 states and 1791 transitions. [2021-10-06 20:57:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 20:57:26,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 20:57:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:26,630 INFO L225 Difference]: With dead ends: 481 [2021-10-06 20:57:26,631 INFO L226 Difference]: Without dead ends: 256 [2021-10-06 20:57:26,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 20:57:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-06 20:57:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 206. [2021-10-06 20:57:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.873170731707317) internal successors, (794), 205 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 20:57:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 794 transitions. [2021-10-06 20:57:26,649 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 794 transitions. Word has length 21 [2021-10-06 20:57:26,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:26,650 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 794 transitions. [2021-10-06 20:57:26,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 794 transitions. [2021-10-06 20:57:26,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-06 20:57:26,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:26,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:26,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:26,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:26,869 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 18 more)] === [2021-10-06 20:57:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1768484658, now seen corresponding path program 2 times [2021-10-06 20:57:26,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:26,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114545455] [2021-10-06 20:57:26,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:26,870 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:26,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:26,871 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:26,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 20:57:26,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 20:57:26,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 20:57:26,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:27,045 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 20:57:27,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:27,097 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 20:57:27,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:27,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114545455] [2021-10-06 20:57:27,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114545455] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:27,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:27,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-06 20:57:27,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419760314] [2021-10-06 20:57:27,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 20:57:27,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:27,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 20:57:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 20:57:27,100 INFO L87 Difference]: Start difference. First operand 206 states and 794 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:27,218 INFO L93 Difference]: Finished difference Result 259 states and 968 transitions. [2021-10-06 20:57:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 20:57:27,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-06 20:57:27,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:27,219 INFO L225 Difference]: With dead ends: 259 [2021-10-06 20:57:27,219 INFO L226 Difference]: Without dead ends: 0 [2021-10-06 20:57:27,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 20:57:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-06 20:57:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-06 20:57:27,220 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 20:57:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-06 20:57:27,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-06 20:57:27,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:27,221 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-06 20:57:27,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-06 20:57:27,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-06 20:57:27,224 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 20:57:27,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 20:57:27,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 20:57:27,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 20:57:27,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 20:57:27,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 20:57:27,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 20:57:27,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 20:57:27,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 20:57:27,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 20:57:27,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 20:57:27,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 20:57:27,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-06 20:57:27,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-06 20:57:27,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-06 20:57:27,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-06 20:57:27,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:57:27,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 20:57:27,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 20:57:27,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 20:57:27,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 20:57:27,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-06 20:57:27,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:27,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:27,445 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 20:57:27,445 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 20:57:27,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 08:57:27 BasicIcfg [2021-10-06 20:57:27,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 20:57:27,449 INFO L168 Benchmark]: Toolchain (without parser) took 30068.30 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.6 MB in the beginning and 81.9 MB in the end (delta: 43.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 8.0 GB. [2021-10-06 20:57:27,449 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 20:57:27,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 20:57:27,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 112.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 20:57:27,450 INFO L168 Benchmark]: Boogie Preprocessor took 35.95 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 111.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 20:57:27,451 INFO L168 Benchmark]: RCFGBuilder took 829.21 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 131.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-10-06 20:57:27,451 INFO L168 Benchmark]: TraceAbstraction took 28821.02 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.6 MB in the beginning and 81.9 MB in the end (delta: 48.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. [2021-10-06 20:57:27,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 319.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 112.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.95 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 111.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 829.21 ms. Allocated memory is still 151.0 MB. Free memory was 111.3 MB in the beginning and 131.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28821.02 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 130.6 MB in the beginning and 81.9 MB in the end (delta: 48.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13993.2ms, 139 PlacesBefore, 60 PlacesAfterwards, 135 TransitionsBefore, 51 TransitionsAfterwards, 3168 CoEnabledTransitionPairs, 6 FixpointIterations, 50 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 5 ChoiceCompositions, 124 TotalNumberOfCompositions, 4951 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3906, positive: 3847, positive conditional: 0, positive unconditional: 3847, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2366, positive: 2342, positive conditional: 0, positive unconditional: 2342, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2366, positive: 2303, positive conditional: 0, positive unconditional: 2303, negative: 63, negative conditional: 0, negative unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 63, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 127, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3906, positive: 1505, positive conditional: 0, positive unconditional: 1505, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 2366, unknown conditional: 0, unknown unconditional: 2366] , Statistics on independence cache: Total cache size (in pairs): 206, Positive cache size: 197, Positive conditional cache size: 0, Positive unconditional cache size: 197, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - 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: 81]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 81]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 82]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 82]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 83]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 83]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 84]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 84]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 85]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 85]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 86]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 86]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 87]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 87]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 88]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 88]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 91]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: 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 9 procedures, 167 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 28595.6ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 29.2ms, AutomataDifference: 965.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14118.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 344 SDtfs, 406 SDslu, 74 SDs, 0 SdLazy, 185 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 539.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 279.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 367.8ms AutomataMinimizationTime, 11 MinimizatonAttempts, 50 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 83.3ms SsaConstructionTime, 364.0ms SatisfiabilityAnalysisTime, 9748.3ms InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 160 ConstructedInterpolants, 4 QuantifiedInterpolants, 1350 SizeOfPredicates, 35 NumberOfNonLiveVariables, 621 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-06 20:57:27,492 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...