/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/popl20-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 20:57:42,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 20:57:42,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 20:57:43,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 20:57:43,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 20:57:43,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 20:57:43,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 20:57:43,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 20:57:43,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 20:57:43,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 20:57:43,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 20:57:43,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 20:57:43,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 20:57:43,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 20:57:43,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 20:57:43,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 20:57:43,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 20:57:43,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 20:57:43,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 20:57:43,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 20:57:43,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 20:57:43,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 20:57:43,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 20:57:43,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 20:57:43,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 20:57:43,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 20:57:43,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 20:57:43,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 20:57:43,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 20:57:43,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 20:57:43,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 20:57:43,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 20:57:43,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 20:57:43,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 20:57:43,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 20:57:43,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 20:57:43,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 20:57:43,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 20:57:43,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 20:57:43,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 20:57:43,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 20:57:43,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 20:57:43,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 20:57:43,199 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 20:57:43,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 20:57:43,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 20:57:43,199 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 20:57:43,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 20:57:43,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 20:57:43,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 20:57:43,201 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 20:57:43,201 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 20:57:43,202 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 20:57:43,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 20:57:43,202 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 20:57:43,202 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 20:57:43,203 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 20:57:43,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 20:57:43,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 20:57:43,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 20:57:43,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 20:57:43,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 20:57:43,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:57:43,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 20:57:43,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 20:57:43,205 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 20:57:43,205 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 20:57:43,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 20:57:43,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 20:57:43,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 20:57:43,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 20:57:43,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 20:57:43,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 20:57:43,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 20:57:43,728 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 20:57:43,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2021-10-13 20:57:43,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2c652d21/7f089cc0e8e74a45b447f143ae4bf17e/FLAGb559e76b7 [2021-10-13 20:57:44,468 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 20:57:44,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2021-10-13 20:57:44,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2c652d21/7f089cc0e8e74a45b447f143ae4bf17e/FLAGb559e76b7 [2021-10-13 20:57:44,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2c652d21/7f089cc0e8e74a45b447f143ae4bf17e [2021-10-13 20:57:44,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 20:57:44,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 20:57:44,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 20:57:44,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 20:57:44,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 20:57:44,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd7919d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44, skipping insertion in model container [2021-10-13 20:57:44,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 20:57:44,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:57:44,751 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c[2061,2074] [2021-10-13 20:57:44,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:57:44,771 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 20:57:44,801 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c[2061,2074] [2021-10-13 20:57:44,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:57:44,834 INFO L208 MainTranslator]: Completed translation [2021-10-13 20:57:44,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44 WrapperNode [2021-10-13 20:57:44,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 20:57:44,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 20:57:44,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 20:57:44,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 20:57:44,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 20:57:44,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 20:57:44,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 20:57:44,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 20:57:44,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 20:57:44,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 20:57:44,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 20:57:44,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 20:57:44,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (1/1) ... [2021-10-13 20:57:44,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:57:45,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:57:45,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 20:57:45,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 20:57:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 20:57:45,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 20:57:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 20:57:45,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 20:57:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 20:57:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 20:57:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 20:57:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 20:57:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 20:57:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 20:57:45,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 20:57:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 20:57:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 20:57:45,106 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 20:57:45,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 20:57:45,681 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 20:57:45,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:45 BoogieIcfgContainer [2021-10-13 20:57:45,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 20:57:45,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 20:57:45,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 20:57:45,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 20:57:45,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:57:44" (1/3) ... [2021-10-13 20:57:45,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5603f578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:45, skipping insertion in model container [2021-10-13 20:57:45,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:44" (2/3) ... [2021-10-13 20:57:45,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5603f578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:45, skipping insertion in model container [2021-10-13 20:57:45,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:45" (3/3) ... [2021-10-13 20:57:45,701 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2021-10-13 20:57:45,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 20:57:45,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-13 20:57:45,708 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 20:57:45,750 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,750 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,750 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,751 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,751 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,751 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,753 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,753 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,753 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,753 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,754 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,754 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,754 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,754 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,754 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,755 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,757 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,758 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,758 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,758 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,758 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,759 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,759 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,760 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,761 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,767 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,771 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:57:45,776 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-13 20:57:45,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 20:57:45,844 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 [2021-10-13 20:57:45,844 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-13 20:57:45,871 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 20:57:45,885 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-13 20:57:45,894 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-13 20:57:45,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2021-10-13 20:57:45,979 INFO L129 PetriNetUnfolder]: 6/89 cut-off events. [2021-10-13 20:57:45,980 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 20:57:45,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-13 20:57:45,994 INFO L116 LiptonReduction]: Number of co-enabled transitions 660 [2021-10-13 20:57:54,146 INFO L131 LiptonReduction]: Checked pairs total: 759 [2021-10-13 20:57:54,147 INFO L133 LiptonReduction]: Total number of compositions: 89 [2021-10-13 20:57:54,157 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-13 20:57:54,172 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 20:57:54,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:54,180 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 20:57:54,181 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:54,187 INFO L82 PathProgramCache]: Analyzing trace with hash 364, now seen corresponding path program 1 times [2021-10-13 20:57:54,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:54,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409669900] [2021-10-13 20:57:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:57:54,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:54,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:54,205 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) [2021-10-13 20:57:54,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 20:57:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:57:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 20:57:54,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:54,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:54,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:54,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409669900] [2021-10-13 20:57:54,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409669900] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:54,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:54,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 20:57:54,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672617172] [2021-10-13 20:57:54,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 20:57:54,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 20:57:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 20:57:54,307 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 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) [2021-10-13 20:57:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:54,324 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-13 20:57:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 20:57:54,326 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 [2021-10-13 20:57:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:54,338 INFO L225 Difference]: With dead ends: 64 [2021-10-13 20:57:54,338 INFO L226 Difference]: Without dead ends: 64 [2021-10-13 20:57:54,339 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 [2021-10-13 20:57:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-13 20:57:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-13 20:57:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-13 20:57:54,381 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-13 20:57:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:54,382 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-13 20:57:54,382 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) [2021-10-13 20:57:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-13 20:57:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:57:54,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:54,383 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:57:54,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:54,594 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 [2021-10-13 20:57:54,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:54,597 INFO L82 PathProgramCache]: Analyzing trace with hash 358609, now seen corresponding path program 1 times [2021-10-13 20:57:54,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:54,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526936640] [2021-10-13 20:57:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:57:54,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:54,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:54,603 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) [2021-10-13 20:57:54,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 20:57:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:57:54,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:57:54,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:54,935 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-13 20:57:54,937 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 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-13 20:57:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:55,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:55,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:55,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526936640] [2021-10-13 20:57:55,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526936640] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:55,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:55,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:57:55,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417930107] [2021-10-13 20:57:55,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:57:55,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:57:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:57:55,351 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:55,383 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-13 20:57:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:57:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 20:57:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:55,385 INFO L225 Difference]: With dead ends: 58 [2021-10-13 20:57:55,385 INFO L226 Difference]: Without dead ends: 58 [2021-10-13 20:57:55,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:57:55,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-13 20:57:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-13 20:57:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-13 20:57:55,396 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-13 20:57:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:55,396 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-13 20:57:55,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-13 20:57:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:57:55,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:55,397 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:57:55,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:55,602 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 [2021-10-13 20:57:55,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:55,603 INFO L82 PathProgramCache]: Analyzing trace with hash 358611, now seen corresponding path program 1 times [2021-10-13 20:57:55,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:55,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661220694] [2021-10-13 20:57:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:57:55,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:55,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:55,612 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) [2021-10-13 20:57:55,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 20:57:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:57:55,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:57:55,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:55,788 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-13 20:57:55,789 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 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-13 20:57:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:55,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:55,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:55,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661220694] [2021-10-13 20:57:55,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661220694] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:55,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:55,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:57:55,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906843348] [2021-10-13 20:57:55,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:57:55,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:57:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:57:55,944 INFO L87 Difference]: Start difference. First operand 58 states and 139 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) [2021-10-13 20:57:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:55,971 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-13 20:57:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:57:55,972 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 [2021-10-13 20:57:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:55,973 INFO L225 Difference]: With dead ends: 52 [2021-10-13 20:57:55,974 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 20:57:55,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:57:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 20:57:55,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-13 20:57:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-13 20:57:55,982 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-13 20:57:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:55,982 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-13 20:57:55,983 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) [2021-10-13 20:57:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-13 20:57:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:57:55,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:55,984 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:57:56,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:56,199 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 [2021-10-13 20:57:56,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash 344632100, now seen corresponding path program 1 times [2021-10-13 20:57:56,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:56,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452852944] [2021-10-13 20:57:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:57:56,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:56,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:56,212 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) [2021-10-13 20:57:56,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 20:57:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:57:56,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:57:56,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:56,375 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-13 20:57:56,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-13 20:57:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:56,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:56,723 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:56,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452852944] [2021-10-13 20:57:56,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452852944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:56,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:56,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:57:56,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183197377] [2021-10-13 20:57:56,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:57:56,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:56,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:57:56,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:57:56,725 INFO L87 Difference]: Start difference. First operand 52 states and 127 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) [2021-10-13 20:57:56,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:56,744 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-13 20:57:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:57:56,745 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 [2021-10-13 20:57:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:56,746 INFO L225 Difference]: With dead ends: 43 [2021-10-13 20:57:56,746 INFO L226 Difference]: Without dead ends: 43 [2021-10-13 20:57:56,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:57:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-13 20:57:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-13 20:57:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-13 20:57:56,752 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-13 20:57:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:56,753 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-13 20:57:56,754 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) [2021-10-13 20:57:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-13 20:57:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:57:56,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:56,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:57:56,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:56,978 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 [2021-10-13 20:57:56,979 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:56,980 INFO L82 PathProgramCache]: Analyzing trace with hash 344632101, now seen corresponding path program 1 times [2021-10-13 20:57:56,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:56,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805310754] [2021-10-13 20:57:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:57:56,982 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:56,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:56,983 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) [2021-10-13 20:57:56,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 20:57:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:57:57,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:57:57,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:57,144 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-13 20:57:57,144 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 3 case distinctions, treesize of input 35 treesize of output 51 [2021-10-13 20:57:57,156 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 98 treesize of output 94 [2021-10-13 20:57:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:57,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:57,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:57,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805310754] [2021-10-13 20:57:57,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805310754] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:57,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:57,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:57:57,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853582825] [2021-10-13 20:57:57,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:57:57,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:57:57,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:57:57,421 INFO L87 Difference]: Start difference. First operand 43 states and 100 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) [2021-10-13 20:57:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:57,438 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-13 20:57:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:57:57,439 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 [2021-10-13 20:57:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:57,440 INFO L225 Difference]: With dead ends: 34 [2021-10-13 20:57:57,440 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 20:57:57,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:57:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 20:57:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-13 20:57:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-13 20:57:57,445 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-13 20:57:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:57,445 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-13 20:57:57,445 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) [2021-10-13 20:57:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-13 20:57:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 20:57:57,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:57,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:57:57,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:57,647 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 [2021-10-13 20:57:57,647 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:57,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1135009574, now seen corresponding path program 1 times [2021-10-13 20:57:57,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:57,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786986423] [2021-10-13 20:57:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:57:57,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:57,651 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) [2021-10-13 20:57:57,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 20:57:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:57:57,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:57:57,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:57,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:57,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:57,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786986423] [2021-10-13 20:57:57,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786986423] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:57,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:57,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:57:57,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597178218] [2021-10-13 20:57:57,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:57:57,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:57:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:57:57,810 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:57,828 INFO L93 Difference]: Finished difference Result 57 states and 116 transitions. [2021-10-13 20:57:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:57:57,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 20:57:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:57,831 INFO L225 Difference]: With dead ends: 57 [2021-10-13 20:57:57,832 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 20:57:57,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:57:57,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 20:57:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 20:57:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 88 transitions. [2021-10-13 20:57:57,846 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 88 transitions. Word has length 13 [2021-10-13 20:57:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:57,846 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 88 transitions. [2021-10-13 20:57:57,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 88 transitions. [2021-10-13 20:57:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 20:57:57,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:57,848 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:57:57,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:58,065 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 [2021-10-13 20:57:58,066 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:58,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:58,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1445930664, now seen corresponding path program 1 times [2021-10-13 20:57:58,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:58,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720092741] [2021-10-13 20:57:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:57:58,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:58,070 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) [2021-10-13 20:57:58,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 20:57:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:57:58,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:57:58,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:58,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:58,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:58,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720092741] [2021-10-13 20:57:58,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720092741] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:58,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:58,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 20:57:58,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370591168] [2021-10-13 20:57:58,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:57:58,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:57:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:57:58,222 INFO L87 Difference]: Start difference. First operand 42 states and 88 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-10-13 20:57:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:58,271 INFO L93 Difference]: Finished difference Result 56 states and 114 transitions. [2021-10-13 20:57:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:57:58,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 20:57:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:58,272 INFO L225 Difference]: With dead ends: 56 [2021-10-13 20:57:58,272 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 20:57:58,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:57:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 20:57:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2021-10-13 20:57:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 90 transitions. [2021-10-13 20:57:58,284 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 90 transitions. Word has length 14 [2021-10-13 20:57:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:58,286 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 90 transitions. [2021-10-13 20:57:58,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2021-10-13 20:57:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 90 transitions. [2021-10-13 20:57:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 20:57:58,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:58,288 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:57:58,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:58,500 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 [2021-10-13 20:57:58,500 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1748346886, now seen corresponding path program 2 times [2021-10-13 20:57:58,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:58,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333219108] [2021-10-13 20:57:58,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:57:58,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:58,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:58,504 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) [2021-10-13 20:57:58,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 20:57:58,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:57:58,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:57:58,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:57:58,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:58,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:58,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:58,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333219108] [2021-10-13 20:57:58,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333219108] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 20:57:58,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 20:57:58,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-10-13 20:57:58,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062842417] [2021-10-13 20:57:58,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:57:58,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:58,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:57:58,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:57:58,747 INFO L87 Difference]: Start difference. First operand 42 states and 90 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-13 20:57:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:58,798 INFO L93 Difference]: Finished difference Result 60 states and 123 transitions. [2021-10-13 20:57:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:57:58,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 20:57:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:58,799 INFO L225 Difference]: With dead ends: 60 [2021-10-13 20:57:58,799 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 20:57:58,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 48.9ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:57:58,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 20:57:58,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2021-10-13 20:57:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.183673469387755) internal successors, (107), 49 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 107 transitions. [2021-10-13 20:57:58,805 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 107 transitions. Word has length 14 [2021-10-13 20:57:58,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:58,805 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 107 transitions. [2021-10-13 20:57:58,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-13 20:57:58,805 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 107 transitions. [2021-10-13 20:57:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 20:57:58,806 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:58,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:57:58,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:59,013 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 [2021-10-13 20:57:59,014 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:59,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:59,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1026509892, now seen corresponding path program 3 times [2021-10-13 20:57:59,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:59,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493776323] [2021-10-13 20:57:59,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:57:59,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:59,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:59,018 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) [2021-10-13 20:57:59,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 20:57:59,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 20:57:59,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:57:59,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:57:59,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:59,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:59,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:59,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493776323] [2021-10-13 20:57:59,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493776323] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 20:57:59,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 20:57:59,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-13 20:57:59,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335560588] [2021-10-13 20:57:59,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:57:59,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:57:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:57:59,271 INFO L87 Difference]: Start difference. First operand 50 states and 107 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-13 20:57:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:59,333 INFO L93 Difference]: Finished difference Result 56 states and 121 transitions. [2021-10-13 20:57:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:57:59,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 20:57:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:59,335 INFO L225 Difference]: With dead ends: 56 [2021-10-13 20:57:59,335 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 20:57:59,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:57:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 20:57:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2021-10-13 20:57:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.2127659574468086) internal successors, (104), 47 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 104 transitions. [2021-10-13 20:57:59,342 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 104 transitions. Word has length 14 [2021-10-13 20:57:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:59,342 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 104 transitions. [2021-10-13 20:57:59,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-13 20:57:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 104 transitions. [2021-10-13 20:57:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 20:57:59,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:59,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:57:59,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:59,545 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 [2021-10-13 20:57:59,546 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:57:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:57:59,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1568438104, now seen corresponding path program 4 times [2021-10-13 20:57:59,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:57:59,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680820132] [2021-10-13 20:57:59,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:57:59,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:57:59,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:57:59,549 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) [2021-10-13 20:57:59,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 20:57:59,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:57:59,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:57:59,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:57:59,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:57:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:59,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:57:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:57:59,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:57:59,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680820132] [2021-10-13 20:57:59,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680820132] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:57:59,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:57:59,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-13 20:57:59,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088569318] [2021-10-13 20:57:59,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:57:59,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:57:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:57:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:57:59,723 INFO L87 Difference]: Start difference. First operand 48 states and 104 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:57:59,779 INFO L93 Difference]: Finished difference Result 54 states and 118 transitions. [2021-10-13 20:57:59,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:57:59,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-13 20:57:59,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:57:59,780 INFO L225 Difference]: With dead ends: 54 [2021-10-13 20:57:59,780 INFO L226 Difference]: Without dead ends: 54 [2021-10-13 20:57:59,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:57:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-13 20:57:59,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2021-10-13 20:57:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.2653061224489797) internal successors, (111), 49 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 111 transitions. [2021-10-13 20:57:59,790 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 111 transitions. Word has length 14 [2021-10-13 20:57:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:57:59,790 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 111 transitions. [2021-10-13 20:57:59,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:57:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 111 transitions. [2021-10-13 20:57:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 20:57:59,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:57:59,792 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:57:59,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 20:57:59,999 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 [2021-10-13 20:58:00,000 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:00,000 INFO L82 PathProgramCache]: Analyzing trace with hash -816808786, now seen corresponding path program 1 times [2021-10-13 20:58:00,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:00,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812320361] [2021-10-13 20:58:00,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:58:00,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:00,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:00,003 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) [2021-10-13 20:58:00,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 20:58:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:58:00,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:58:00,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:00,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:00,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:00,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812320361] [2021-10-13 20:58:00,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812320361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:00,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:00,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 20:58:00,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735381787] [2021-10-13 20:58:00,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:58:00,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:58:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:58:00,395 INFO L87 Difference]: Start difference. First operand 50 states and 111 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) [2021-10-13 20:58:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:00,456 INFO L93 Difference]: Finished difference Result 93 states and 200 transitions. [2021-10-13 20:58:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:58:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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 15 [2021-10-13 20:58:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:00,458 INFO L225 Difference]: With dead ends: 93 [2021-10-13 20:58:00,458 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 20:58:00,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 57.2ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:58:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 20:58:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-10-13 20:58:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 65 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 147 transitions. [2021-10-13 20:58:00,463 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 147 transitions. Word has length 15 [2021-10-13 20:58:00,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:00,463 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 147 transitions. [2021-10-13 20:58:00,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 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) [2021-10-13 20:58:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 147 transitions. [2021-10-13 20:58:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 20:58:00,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:00,464 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:00,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:00,665 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 [2021-10-13 20:58:00,665 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:00,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:00,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1395535152, now seen corresponding path program 5 times [2021-10-13 20:58:00,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:00,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244355137] [2021-10-13 20:58:00,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:58:00,668 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:00,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:00,669 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:00,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 20:58:00,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:58:00,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:00,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:58:00,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:00,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:00,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:00,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244355137] [2021-10-13 20:58:00,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244355137] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 20:58:00,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 20:58:00,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-10-13 20:58:00,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657315593] [2021-10-13 20:58:00,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:58:00,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:58:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:58:00,839 INFO L87 Difference]: Start difference. First operand 66 states and 147 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:00,870 INFO L93 Difference]: Finished difference Result 74 states and 163 transitions. [2021-10-13 20:58:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:58:00,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 20:58:00,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:00,872 INFO L225 Difference]: With dead ends: 74 [2021-10-13 20:58:00,872 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 20:58:00,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:58:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 20:58:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2021-10-13 20:58:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:00,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 130 transitions. [2021-10-13 20:58:00,876 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 130 transitions. Word has length 15 [2021-10-13 20:58:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:00,877 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 130 transitions. [2021-10-13 20:58:00,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:00,877 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 130 transitions. [2021-10-13 20:58:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:00,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:00,878 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:00,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:01,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:01,086 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:01,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1741635616, now seen corresponding path program 2 times [2021-10-13 20:58:01,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:01,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297522323] [2021-10-13 20:58:01,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:58:01,089 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:01,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:01,090 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:01,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 20:58:01,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:58:01,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:01,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:01,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:01,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:01,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:01,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297522323] [2021-10-13 20:58:01,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297522323] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:01,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:01,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-13 20:58:01,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420537686] [2021-10-13 20:58:01,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:58:01,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:01,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:58:01,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:58:01,693 INFO L87 Difference]: Start difference. First operand 60 states and 130 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:02,891 INFO L93 Difference]: Finished difference Result 106 states and 235 transitions. [2021-10-13 20:58:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 20:58:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:02,894 INFO L225 Difference]: With dead ends: 106 [2021-10-13 20:58:02,894 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 20:58:02,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1027.3ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:58:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 20:58:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2021-10-13 20:58:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.382716049382716) internal successors, (193), 81 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 193 transitions. [2021-10-13 20:58:02,901 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 193 transitions. Word has length 16 [2021-10-13 20:58:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:02,901 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 193 transitions. [2021-10-13 20:58:02,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 193 transitions. [2021-10-13 20:58:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:02,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:02,902 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:02,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-13 20:58:03,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:03,115 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:03,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:03,116 INFO L82 PathProgramCache]: Analyzing trace with hash 880977148, now seen corresponding path program 3 times [2021-10-13 20:58:03,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:03,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72257916] [2021-10-13 20:58:03,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:58:03,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:03,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:03,118 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:03,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 20:58:03,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:58:03,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:03,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:03,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:03,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:03,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:03,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72257916] [2021-10-13 20:58:03,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72257916] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:03,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:03,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-13 20:58:03,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135628743] [2021-10-13 20:58:03,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:58:03,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:58:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:58:03,709 INFO L87 Difference]: Start difference. First operand 82 states and 193 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:05,647 INFO L93 Difference]: Finished difference Result 196 states and 415 transitions. [2021-10-13 20:58:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 20:58:05,649 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:05,651 INFO L225 Difference]: With dead ends: 196 [2021-10-13 20:58:05,651 INFO L226 Difference]: Without dead ends: 192 [2021-10-13 20:58:05,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1621.3ms TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2021-10-13 20:58:05,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-13 20:58:05,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 100. [2021-10-13 20:58:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.6464646464646466) internal successors, (262), 99 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 262 transitions. [2021-10-13 20:58:05,659 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 262 transitions. Word has length 16 [2021-10-13 20:58:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:05,659 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 262 transitions. [2021-10-13 20:58:05,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 262 transitions. [2021-10-13 20:58:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:05,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:05,660 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:05,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:05,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:05,873 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2140713416, now seen corresponding path program 4 times [2021-10-13 20:58:05,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:05,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88001902] [2021-10-13 20:58:05,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:58:05,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:05,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:05,878 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:05,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 20:58:05,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:58:05,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:05,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:05,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:06,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:06,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:06,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88001902] [2021-10-13 20:58:06,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88001902] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:06,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:06,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-13 20:58:06,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113006448] [2021-10-13 20:58:06,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:58:06,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:58:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:58:06,388 INFO L87 Difference]: Start difference. First operand 100 states and 262 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:07,486 INFO L93 Difference]: Finished difference Result 186 states and 437 transitions. [2021-10-13 20:58:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 20:58:07,487 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:07,489 INFO L225 Difference]: With dead ends: 186 [2021-10-13 20:58:07,489 INFO L226 Difference]: Without dead ends: 186 [2021-10-13 20:58:07,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 874.7ms TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2021-10-13 20:58:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-13 20:58:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 116. [2021-10-13 20:58:07,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.6782608695652175) internal successors, (308), 115 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 308 transitions. [2021-10-13 20:58:07,497 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 308 transitions. Word has length 16 [2021-10-13 20:58:07,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:07,515 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 308 transitions. [2021-10-13 20:58:07,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 308 transitions. [2021-10-13 20:58:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:07,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:07,516 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:07,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:07,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:07,729 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:07,730 INFO L82 PathProgramCache]: Analyzing trace with hash 177416210, now seen corresponding path program 5 times [2021-10-13 20:58:07,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:07,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028234739] [2021-10-13 20:58:07,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:58:07,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:07,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:07,732 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:07,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 20:58:07,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:58:07,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:07,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:07,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:07,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:08,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:08,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028234739] [2021-10-13 20:58:08,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028234739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:08,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:08,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-13 20:58:08,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454944997] [2021-10-13 20:58:08,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:58:08,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:58:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:58:08,329 INFO L87 Difference]: Start difference. First operand 116 states and 308 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:09,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:09,853 INFO L93 Difference]: Finished difference Result 234 states and 564 transitions. [2021-10-13 20:58:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 20:58:09,854 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:09,856 INFO L225 Difference]: With dead ends: 234 [2021-10-13 20:58:09,856 INFO L226 Difference]: Without dead ends: 226 [2021-10-13 20:58:09,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1267.1ms TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:58:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-13 20:58:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 136. [2021-10-13 20:58:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.814814814814815) internal successors, (380), 135 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 380 transitions. [2021-10-13 20:58:09,865 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 380 transitions. Word has length 16 [2021-10-13 20:58:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:09,865 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 380 transitions. [2021-10-13 20:58:09,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 380 transitions. [2021-10-13 20:58:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:09,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:09,867 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:09,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:10,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:10,080 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:10,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1988689922, now seen corresponding path program 6 times [2021-10-13 20:58:10,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:10,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277617975] [2021-10-13 20:58:10,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:58:10,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:10,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:10,083 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:10,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 20:58:10,203 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:58:10,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:10,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:10,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:10,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:10,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:10,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277617975] [2021-10-13 20:58:10,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277617975] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:10,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:10,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-10-13 20:58:10,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395187212] [2021-10-13 20:58:10,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:58:10,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:10,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:58:10,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:58:10,535 INFO L87 Difference]: Start difference. First operand 136 states and 380 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:11,207 INFO L93 Difference]: Finished difference Result 226 states and 582 transitions. [2021-10-13 20:58:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 20:58:11,208 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:11,210 INFO L225 Difference]: With dead ends: 226 [2021-10-13 20:58:11,210 INFO L226 Difference]: Without dead ends: 224 [2021-10-13 20:58:11,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 532.5ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-13 20:58:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-13 20:58:11,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2021-10-13 20:58:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.839160839160839) internal successors, (406), 143 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 406 transitions. [2021-10-13 20:58:11,219 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 406 transitions. Word has length 16 [2021-10-13 20:58:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:11,219 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 406 transitions. [2021-10-13 20:58:11,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 406 transitions. [2021-10-13 20:58:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:11,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:11,221 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:11,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:11,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:11,434 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:11,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1445618906, now seen corresponding path program 7 times [2021-10-13 20:58:11,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:11,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054651631] [2021-10-13 20:58:11,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:58:11,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:11,438 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:11,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 20:58:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:58:11,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 20:58:11,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:11,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:11,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:11,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054651631] [2021-10-13 20:58:11,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054651631] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:11,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:11,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-10-13 20:58:11,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900411992] [2021-10-13 20:58:11,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 20:58:11,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:11,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 20:58:11,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-13 20:58:11,797 INFO L87 Difference]: Start difference. First operand 144 states and 406 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:12,205 INFO L93 Difference]: Finished difference Result 222 states and 559 transitions. [2021-10-13 20:58:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:58:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:12,207 INFO L225 Difference]: With dead ends: 222 [2021-10-13 20:58:12,207 INFO L226 Difference]: Without dead ends: 214 [2021-10-13 20:58:12,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 299.3ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:58:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-13 20:58:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 146. [2021-10-13 20:58:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.793103448275862) internal successors, (405), 145 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 405 transitions. [2021-10-13 20:58:12,219 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 405 transitions. Word has length 16 [2021-10-13 20:58:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:12,219 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 405 transitions. [2021-10-13 20:58:12,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 405 transitions. [2021-10-13 20:58:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:12,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:12,221 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:12,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:12,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:12,434 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:12,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1576071658, now seen corresponding path program 8 times [2021-10-13 20:58:12,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:12,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651030707] [2021-10-13 20:58:12,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:58:12,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:12,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:12,438 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:12,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 20:58:12,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:58:12,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:12,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:12,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:12,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:12,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:12,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651030707] [2021-10-13 20:58:12,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651030707] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:12,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:12,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-13 20:58:12,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244590456] [2021-10-13 20:58:12,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:58:12,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:58:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:58:12,913 INFO L87 Difference]: Start difference. First operand 146 states and 405 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:13,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:13,495 INFO L93 Difference]: Finished difference Result 212 states and 536 transitions. [2021-10-13 20:58:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 20:58:13,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:13,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:13,499 INFO L225 Difference]: With dead ends: 212 [2021-10-13 20:58:13,499 INFO L226 Difference]: Without dead ends: 212 [2021-10-13 20:58:13,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 533.7ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:58:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-13 20:58:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 152. [2021-10-13 20:58:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.8211920529801326) internal successors, (426), 151 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 426 transitions. [2021-10-13 20:58:13,507 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 426 transitions. Word has length 16 [2021-10-13 20:58:13,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:13,507 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 426 transitions. [2021-10-13 20:58:13,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 426 transitions. [2021-10-13 20:58:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:58:13,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:13,508 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:13,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:13,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:13,721 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:13,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:13,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1956166270, now seen corresponding path program 9 times [2021-10-13 20:58:13,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:13,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549680512] [2021-10-13 20:58:13,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:58:13,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:13,725 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:13,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 20:58:13,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 20:58:13,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:13,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:13,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:14,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:14,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:14,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549680512] [2021-10-13 20:58:14,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549680512] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:14,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:14,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-13 20:58:14,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096404602] [2021-10-13 20:58:14,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:58:14,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:58:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:58:14,238 INFO L87 Difference]: Start difference. First operand 152 states and 426 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:14,681 INFO L93 Difference]: Finished difference Result 240 states and 610 transitions. [2021-10-13 20:58:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 20:58:14,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 20:58:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:14,689 INFO L225 Difference]: With dead ends: 240 [2021-10-13 20:58:14,689 INFO L226 Difference]: Without dead ends: 240 [2021-10-13 20:58:14,689 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 350.3ms TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:58:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-13 20:58:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 144. [2021-10-13 20:58:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.7832167832167833) internal successors, (398), 143 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 398 transitions. [2021-10-13 20:58:14,696 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 398 transitions. Word has length 16 [2021-10-13 20:58:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:14,697 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 398 transitions. [2021-10-13 20:58:14,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 398 transitions. [2021-10-13 20:58:14,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 20:58:14,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:14,698 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:14,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:14,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:14,911 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1133967802, now seen corresponding path program 10 times [2021-10-13 20:58:14,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:14,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145414175] [2021-10-13 20:58:14,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:58:14,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:14,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:14,915 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:14,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 20:58:15,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:58:15,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:15,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:15,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:15,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:15,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:15,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145414175] [2021-10-13 20:58:15,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145414175] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:15,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:15,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-13 20:58:15,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803617304] [2021-10-13 20:58:15,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:58:15,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:58:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:58:15,539 INFO L87 Difference]: Start difference. First operand 144 states and 398 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:16,923 INFO L93 Difference]: Finished difference Result 358 states and 825 transitions. [2021-10-13 20:58:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 20:58:16,926 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 20:58:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:16,929 INFO L225 Difference]: With dead ends: 358 [2021-10-13 20:58:16,929 INFO L226 Difference]: Without dead ends: 354 [2021-10-13 20:58:16,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1153.1ms TimeCoverageRelationStatistics Valid=346, Invalid=844, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 20:58:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-13 20:58:16,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 150. [2021-10-13 20:58:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.791946308724832) internal successors, (416), 149 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 416 transitions. [2021-10-13 20:58:16,939 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 416 transitions. Word has length 17 [2021-10-13 20:58:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:16,939 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 416 transitions. [2021-10-13 20:58:16,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 416 transitions. [2021-10-13 20:58:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 20:58:16,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:16,941 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:16,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:17,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:17,153 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:17,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:17,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1925030200, now seen corresponding path program 11 times [2021-10-13 20:58:17,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:17,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366147022] [2021-10-13 20:58:17,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:58:17,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:17,157 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:17,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 20:58:17,325 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:58:17,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:17,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:58:17,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:17,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:17,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:17,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366147022] [2021-10-13 20:58:17,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366147022] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:17,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:17,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 20:58:17,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035102957] [2021-10-13 20:58:17,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 20:58:17,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 20:58:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 20:58:17,844 INFO L87 Difference]: Start difference. First operand 150 states and 416 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:17,992 INFO L93 Difference]: Finished difference Result 267 states and 716 transitions. [2021-10-13 20:58:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 20:58:17,992 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 20:58:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:17,996 INFO L225 Difference]: With dead ends: 267 [2021-10-13 20:58:17,996 INFO L226 Difference]: Without dead ends: 244 [2021-10-13 20:58:17,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 164.3ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 20:58:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-13 20:58:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 194. [2021-10-13 20:58:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.854922279792746) internal successors, (551), 193 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 551 transitions. [2021-10-13 20:58:18,006 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 551 transitions. Word has length 17 [2021-10-13 20:58:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:18,006 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 551 transitions. [2021-10-13 20:58:18,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 551 transitions. [2021-10-13 20:58:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 20:58:18,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:18,008 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:18,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:18,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:18,218 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:18,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:18,219 INFO L82 PathProgramCache]: Analyzing trace with hash -700771228, now seen corresponding path program 12 times [2021-10-13 20:58:18,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:18,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887264026] [2021-10-13 20:58:18,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:58:18,220 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:18,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:18,221 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:18,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 20:58:18,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:58:18,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:18,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:58:18,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:18,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:18,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:18,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887264026] [2021-10-13 20:58:18,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887264026] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:18,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:18,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-10-13 20:58:18,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678811067] [2021-10-13 20:58:18,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:58:18,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:58:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:58:18,867 INFO L87 Difference]: Start difference. First operand 194 states and 551 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:20,785 INFO L93 Difference]: Finished difference Result 284 states and 728 transitions. [2021-10-13 20:58:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 20:58:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 20:58:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:20,795 INFO L225 Difference]: With dead ends: 284 [2021-10-13 20:58:20,795 INFO L226 Difference]: Without dead ends: 282 [2021-10-13 20:58:20,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1076.6ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-10-13 20:58:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-13 20:58:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 210. [2021-10-13 20:58:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.8564593301435406) internal successors, (597), 209 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 597 transitions. [2021-10-13 20:58:20,809 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 597 transitions. Word has length 17 [2021-10-13 20:58:20,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:20,810 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 597 transitions. [2021-10-13 20:58:20,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 597 transitions. [2021-10-13 20:58:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:20,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:20,811 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:20,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:21,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:21,024 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:21,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:21,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2008176862, now seen corresponding path program 13 times [2021-10-13 20:58:21,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:21,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979692147] [2021-10-13 20:58:21,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:58:21,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:21,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:21,026 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:21,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 20:58:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:58:21,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:58:21,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:21,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:21,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:21,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979692147] [2021-10-13 20:58:21,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979692147] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:21,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:21,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-13 20:58:21,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817374432] [2021-10-13 20:58:21,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:58:21,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:58:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:58:21,565 INFO L87 Difference]: Start difference. First operand 210 states and 597 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2021-10-13 20:58:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:24,557 INFO L93 Difference]: Finished difference Result 446 states and 1113 transitions. [2021-10-13 20:58:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 20:58:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 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 18 [2021-10-13 20:58:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:24,563 INFO L225 Difference]: With dead ends: 446 [2021-10-13 20:58:24,563 INFO L226 Difference]: Without dead ends: 432 [2021-10-13 20:58:24,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1648.7ms TimeCoverageRelationStatistics Valid=363, Invalid=1277, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 20:58:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-13 20:58:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 232. [2021-10-13 20:58:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.9004329004329006) internal successors, (670), 231 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:24,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 670 transitions. [2021-10-13 20:58:24,579 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 670 transitions. Word has length 18 [2021-10-13 20:58:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:24,581 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 670 transitions. [2021-10-13 20:58:24,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2021-10-13 20:58:24,581 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 670 transitions. [2021-10-13 20:58:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:24,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:24,583 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:24,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-13 20:58:24,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:24,795 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:24,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1147518394, now seen corresponding path program 14 times [2021-10-13 20:58:24,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:24,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141838512] [2021-10-13 20:58:24,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:58:24,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:24,798 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:24,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 20:58:24,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:58:24,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:24,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:58:24,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:25,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:25,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:25,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141838512] [2021-10-13 20:58:25,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141838512] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:25,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:25,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-13 20:58:25,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341903887] [2021-10-13 20:58:25,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:58:25,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:58:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:58:25,404 INFO L87 Difference]: Start difference. First operand 232 states and 670 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:28,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:28,141 INFO L93 Difference]: Finished difference Result 436 states and 1050 transitions. [2021-10-13 20:58:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 20:58:28,142 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:58:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:28,145 INFO L225 Difference]: With dead ends: 436 [2021-10-13 20:58:28,145 INFO L226 Difference]: Without dead ends: 424 [2021-10-13 20:58:28,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1862.6ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 20:58:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-13 20:58:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 146. [2021-10-13 20:58:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.613793103448276) internal successors, (379), 145 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 379 transitions. [2021-10-13 20:58:28,155 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 379 transitions. Word has length 18 [2021-10-13 20:58:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:28,155 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 379 transitions. [2021-10-13 20:58:28,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:28,155 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 379 transitions. [2021-10-13 20:58:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:28,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:28,156 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:28,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:28,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:28,369 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1407907282, now seen corresponding path program 15 times [2021-10-13 20:58:28,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:28,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459224684] [2021-10-13 20:58:28,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:58:28,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:28,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:28,371 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:28,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 20:58:28,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:58:28,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:28,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:58:28,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:28,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:29,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:29,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459224684] [2021-10-13 20:58:29,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459224684] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:29,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:29,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 20:58:29,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023833743] [2021-10-13 20:58:29,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:58:29,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:58:29,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:58:29,368 INFO L87 Difference]: Start difference. First operand 146 states and 379 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:32,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:32,983 INFO L93 Difference]: Finished difference Result 310 states and 740 transitions. [2021-10-13 20:58:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 20:58:32,985 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:58:32,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:32,987 INFO L225 Difference]: With dead ends: 310 [2021-10-13 20:58:32,987 INFO L226 Difference]: Without dead ends: 310 [2021-10-13 20:58:32,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 3184.4ms TimeCoverageRelationStatistics Valid=439, Invalid=1367, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 20:58:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-13 20:58:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 192. [2021-10-13 20:58:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.602094240837696) internal successors, (497), 191 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 497 transitions. [2021-10-13 20:58:32,997 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 497 transitions. Word has length 18 [2021-10-13 20:58:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:32,997 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 497 transitions. [2021-10-13 20:58:32,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 497 transitions. [2021-10-13 20:58:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:32,999 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:32,999 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:33,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-13 20:58:33,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:33,212 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1776410108, now seen corresponding path program 16 times [2021-10-13 20:58:33,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:33,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304235694] [2021-10-13 20:58:33,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:58:33,214 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:33,216 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:33,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 20:58:33,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:58:33,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:33,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:58:33,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:33,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:33,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:33,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304235694] [2021-10-13 20:58:33,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304235694] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:33,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:33,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 20:58:33,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646210339] [2021-10-13 20:58:33,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:58:33,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:58:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:58:33,868 INFO L87 Difference]: Start difference. First operand 192 states and 497 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:36,619 INFO L93 Difference]: Finished difference Result 462 states and 1076 transitions. [2021-10-13 20:58:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 20:58:36,620 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:58:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:36,623 INFO L225 Difference]: With dead ends: 462 [2021-10-13 20:58:36,623 INFO L226 Difference]: Without dead ends: 426 [2021-10-13 20:58:36,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2256.0ms TimeCoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 20:58:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-10-13 20:58:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 236. [2021-10-13 20:58:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.6595744680851063) internal successors, (625), 235 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 625 transitions. [2021-10-13 20:58:36,635 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 625 transitions. Word has length 18 [2021-10-13 20:58:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:36,635 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 625 transitions. [2021-10-13 20:58:36,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 625 transitions. [2021-10-13 20:58:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:36,636 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:36,636 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:36,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:36,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:36,849 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1445471808, now seen corresponding path program 17 times [2021-10-13 20:58:36,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:36,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832205530] [2021-10-13 20:58:36,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:58:36,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:36,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:36,852 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:36,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 20:58:37,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:58:37,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:37,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:58:37,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:37,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:37,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:37,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832205530] [2021-10-13 20:58:37,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832205530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:37,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:37,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 20:58:37,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054309927] [2021-10-13 20:58:37,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:58:37,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:58:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:58:37,844 INFO L87 Difference]: Start difference. First operand 236 states and 625 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:45,131 INFO L93 Difference]: Finished difference Result 512 states and 1210 transitions. [2021-10-13 20:58:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 20:58:45,132 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:58:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:45,136 INFO L225 Difference]: With dead ends: 512 [2021-10-13 20:58:45,137 INFO L226 Difference]: Without dead ends: 488 [2021-10-13 20:58:45,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 5478.8ms TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 20:58:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-10-13 20:58:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 274. [2021-10-13 20:58:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.7326007326007327) internal successors, (746), 273 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 746 transitions. [2021-10-13 20:58:45,151 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 746 transitions. Word has length 18 [2021-10-13 20:58:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:45,152 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 746 transitions. [2021-10-13 20:58:45,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 746 transitions. [2021-10-13 20:58:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:45,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:45,153 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:45,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:45,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:45,366 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:45,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:45,367 INFO L82 PathProgramCache]: Analyzing trace with hash 653763352, now seen corresponding path program 18 times [2021-10-13 20:58:45,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:45,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639783596] [2021-10-13 20:58:45,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:58:45,368 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:45,369 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:45,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 20:58:45,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:58:45,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:45,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:58:45,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:45,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:46,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:46,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639783596] [2021-10-13 20:58:46,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639783596] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:46,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:46,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 20:58:46,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664285605] [2021-10-13 20:58:46,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:58:46,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:46,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:58:46,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:58:46,071 INFO L87 Difference]: Start difference. First operand 274 states and 746 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:50,126 INFO L93 Difference]: Finished difference Result 740 states and 1781 transitions. [2021-10-13 20:58:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 20:58:50,128 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:58:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:50,133 INFO L225 Difference]: With dead ends: 740 [2021-10-13 20:58:50,133 INFO L226 Difference]: Without dead ends: 704 [2021-10-13 20:58:50,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2790.4ms TimeCoverageRelationStatistics Valid=355, Invalid=1205, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 20:58:50,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-10-13 20:58:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 338. [2021-10-13 20:58:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 2.85459940652819) internal successors, (962), 337 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 962 transitions. [2021-10-13 20:58:50,152 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 962 transitions. Word has length 18 [2021-10-13 20:58:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:50,152 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 962 transitions. [2021-10-13 20:58:50,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:50,152 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 962 transitions. [2021-10-13 20:58:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:50,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:50,154 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:50,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:50,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:50,367 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:50,368 INFO L82 PathProgramCache]: Analyzing trace with hash -831940292, now seen corresponding path program 19 times [2021-10-13 20:58:50,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:50,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506273629] [2021-10-13 20:58:50,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:58:50,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:50,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:50,370 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:50,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 20:58:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:58:50,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:58:50,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:50,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:50,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:50,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:50,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506273629] [2021-10-13 20:58:50,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506273629] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:50,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:50,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-13 20:58:50,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134716623] [2021-10-13 20:58:50,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:58:50,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:58:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:58:50,875 INFO L87 Difference]: Start difference. First operand 338 states and 962 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:54,063 INFO L93 Difference]: Finished difference Result 744 states and 1868 transitions. [2021-10-13 20:58:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 20:58:54,064 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:58:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:54,068 INFO L225 Difference]: With dead ends: 744 [2021-10-13 20:58:54,068 INFO L226 Difference]: Without dead ends: 734 [2021-10-13 20:58:54,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1942.9ms TimeCoverageRelationStatistics Valid=321, Invalid=1161, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 20:58:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-10-13 20:58:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 368. [2021-10-13 20:58:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.9346049046321525) internal successors, (1077), 367 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1077 transitions. [2021-10-13 20:58:54,089 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1077 transitions. Word has length 18 [2021-10-13 20:58:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:54,089 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1077 transitions. [2021-10-13 20:58:54,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1077 transitions. [2021-10-13 20:58:54,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:54,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:54,091 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:54,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 20:58:54,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:54,304 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:54,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:54,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1692598760, now seen corresponding path program 20 times [2021-10-13 20:58:54,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:54,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793161197] [2021-10-13 20:58:54,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:58:54,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:54,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:54,308 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:54,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 20:58:54,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:58:54,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:54,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:58:54,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:54,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:54,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:54,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793161197] [2021-10-13 20:58:54,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793161197] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:54,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:54,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-13 20:58:54,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729735598] [2021-10-13 20:58:54,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:58:54,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:58:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:58:54,928 INFO L87 Difference]: Start difference. First operand 368 states and 1077 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-13 20:58:57,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:58:57,961 INFO L93 Difference]: Finished difference Result 778 states and 1939 transitions. [2021-10-13 20:58:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 20:58:57,965 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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 18 [2021-10-13 20:58:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:58:57,970 INFO L225 Difference]: With dead ends: 778 [2021-10-13 20:58:57,970 INFO L226 Difference]: Without dead ends: 762 [2021-10-13 20:58:57,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1961.3ms TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 20:58:57,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-10-13 20:58:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 294. [2021-10-13 20:58:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.795221843003413) internal successors, (819), 293 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:58:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 819 transitions. [2021-10-13 20:58:57,989 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 819 transitions. Word has length 18 [2021-10-13 20:58:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:58:57,989 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 819 transitions. [2021-10-13 20:58:57,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-13 20:58:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 819 transitions. [2021-10-13 20:58:57,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:58:57,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:58:57,991 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:58:58,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-13 20:58:58,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:58:58,205 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:58:58,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:58:58,206 INFO L82 PathProgramCache]: Analyzing trace with hash 18014548, now seen corresponding path program 21 times [2021-10-13 20:58:58,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:58:58,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810666927] [2021-10-13 20:58:58,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:58:58,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:58:58,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:58:58,209 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:58:58,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 20:58:58,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:58:58,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:58:58,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:58:58,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:58:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:58,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:58:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:58:58,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:58:58,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810666927] [2021-10-13 20:58:58,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810666927] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:58:58,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:58:58,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-13 20:58:58,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835068853] [2021-10-13 20:58:58,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:58:58,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:58:58,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:58:58,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:58:58,841 INFO L87 Difference]: Start difference. First operand 294 states and 819 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-13 20:59:01,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:01,613 INFO L93 Difference]: Finished difference Result 548 states and 1375 transitions. [2021-10-13 20:59:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 20:59:01,613 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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 18 [2021-10-13 20:59:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:01,617 INFO L225 Difference]: With dead ends: 548 [2021-10-13 20:59:01,617 INFO L226 Difference]: Without dead ends: 538 [2021-10-13 20:59:01,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1950.5ms TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2021-10-13 20:59:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-13 20:59:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 322. [2021-10-13 20:59:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 2.844236760124611) internal successors, (913), 321 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 913 transitions. [2021-10-13 20:59:01,632 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 913 transitions. Word has length 18 [2021-10-13 20:59:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:01,632 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 913 transitions. [2021-10-13 20:59:01,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-13 20:59:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 913 transitions. [2021-10-13 20:59:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:59:01,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:01,634 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:01,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:01,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:01,848 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:01,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1432209872, now seen corresponding path program 22 times [2021-10-13 20:59:01,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:01,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768702754] [2021-10-13 20:59:01,849 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:59:01,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:01,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:01,851 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:01,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 20:59:02,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:59:02,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:02,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:59:02,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:02,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:02,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:02,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768702754] [2021-10-13 20:59:02,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768702754] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:02,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:02,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 20:59:02,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128101270] [2021-10-13 20:59:02,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:59:02,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:59:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:59:02,535 INFO L87 Difference]: Start difference. First operand 322 states and 913 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:05,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:05,458 INFO L93 Difference]: Finished difference Result 722 states and 1793 transitions. [2021-10-13 20:59:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 20:59:05,459 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:59:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:05,462 INFO L225 Difference]: With dead ends: 722 [2021-10-13 20:59:05,463 INFO L226 Difference]: Without dead ends: 722 [2021-10-13 20:59:05,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1953.3ms TimeCoverageRelationStatistics Valid=421, Invalid=1471, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 20:59:05,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2021-10-13 20:59:05,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 356. [2021-10-13 20:59:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 2.8901408450704227) internal successors, (1026), 355 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1026 transitions. [2021-10-13 20:59:05,495 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1026 transitions. Word has length 18 [2021-10-13 20:59:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:05,495 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1026 transitions. [2021-10-13 20:59:05,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1026 transitions. [2021-10-13 20:59:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:59:05,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:05,497 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:05,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:05,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:05,710 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:05,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:05,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1030642264, now seen corresponding path program 23 times [2021-10-13 20:59:05,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:05,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190568832] [2021-10-13 20:59:05,712 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:59:05,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:05,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:05,713 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:05,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 20:59:05,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 20:59:05,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:05,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:59:05,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:06,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:06,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:06,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190568832] [2021-10-13 20:59:06,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190568832] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:06,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:06,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-13 20:59:06,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874137290] [2021-10-13 20:59:06,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:59:06,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:59:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:59:06,515 INFO L87 Difference]: Start difference. First operand 356 states and 1026 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:08,205 INFO L93 Difference]: Finished difference Result 532 states and 1544 transitions. [2021-10-13 20:59:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 20:59:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:59:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:08,211 INFO L225 Difference]: With dead ends: 532 [2021-10-13 20:59:08,211 INFO L226 Difference]: Without dead ends: 528 [2021-10-13 20:59:08,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1354.3ms TimeCoverageRelationStatistics Valid=233, Invalid=417, Unknown=0, NotChecked=0, Total=650 [2021-10-13 20:59:08,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-13 20:59:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 382. [2021-10-13 20:59:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 2.952755905511811) internal successors, (1125), 381 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1125 transitions. [2021-10-13 20:59:08,227 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1125 transitions. Word has length 18 [2021-10-13 20:59:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:08,227 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1125 transitions. [2021-10-13 20:59:08,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:08,228 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1125 transitions. [2021-10-13 20:59:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:59:08,229 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:08,229 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:08,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:08,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:08,439 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:08,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1891300732, now seen corresponding path program 24 times [2021-10-13 20:59:08,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:08,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214026680] [2021-10-13 20:59:08,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:59:08,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:08,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:08,444 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:08,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 20:59:08,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 20:59:08,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:08,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:59:08,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:08,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:09,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:09,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214026680] [2021-10-13 20:59:09,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214026680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:09,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:09,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-10-13 20:59:09,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426098910] [2021-10-13 20:59:09,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:59:09,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:59:09,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:59:09,170 INFO L87 Difference]: Start difference. First operand 382 states and 1125 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-13 20:59:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:12,535 INFO L93 Difference]: Finished difference Result 774 states and 2006 transitions. [2021-10-13 20:59:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 20:59:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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 18 [2021-10-13 20:59:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:12,542 INFO L225 Difference]: With dead ends: 774 [2021-10-13 20:59:12,543 INFO L226 Difference]: Without dead ends: 766 [2021-10-13 20:59:12,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3017.9ms TimeCoverageRelationStatistics Valid=332, Invalid=1228, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 20:59:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-10-13 20:59:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 394. [2021-10-13 20:59:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 2.959287531806616) internal successors, (1163), 393 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1163 transitions. [2021-10-13 20:59:12,560 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1163 transitions. Word has length 18 [2021-10-13 20:59:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:12,561 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1163 transitions. [2021-10-13 20:59:12,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 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) [2021-10-13 20:59:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1163 transitions. [2021-10-13 20:59:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:59:12,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:12,563 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:12,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:12,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:12,776 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:12,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash -618024000, now seen corresponding path program 25 times [2021-10-13 20:59:12,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:12,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624154072] [2021-10-13 20:59:12,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:59:12,779 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:12,780 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:12,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 20:59:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:59:12,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:59:12,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:13,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:13,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:13,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624154072] [2021-10-13 20:59:13,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624154072] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:13,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:13,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 20:59:13,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433092188] [2021-10-13 20:59:13,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:59:13,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:13,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:59:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:59:13,387 INFO L87 Difference]: Start difference. First operand 394 states and 1163 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:16,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:16,325 INFO L93 Difference]: Finished difference Result 770 states and 2026 transitions. [2021-10-13 20:59:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 20:59:16,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:59:16,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:16,330 INFO L225 Difference]: With dead ends: 770 [2021-10-13 20:59:16,330 INFO L226 Difference]: Without dead ends: 742 [2021-10-13 20:59:16,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1574.9ms TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 20:59:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-10-13 20:59:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 382. [2021-10-13 20:59:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 2.8897637795275593) internal successors, (1101), 381 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1101 transitions. [2021-10-13 20:59:16,347 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1101 transitions. Word has length 18 [2021-10-13 20:59:16,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:16,348 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1101 transitions. [2021-10-13 20:59:16,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:16,348 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1101 transitions. [2021-10-13 20:59:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:59:16,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:16,350 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:16,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:16,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:16,563 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:16,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1630911844, now seen corresponding path program 26 times [2021-10-13 20:59:16,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:16,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492069601] [2021-10-13 20:59:16,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:59:16,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:16,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:16,566 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:16,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 20:59:16,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:59:16,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:16,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:59:16,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:16,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:17,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:17,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492069601] [2021-10-13 20:59:17,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492069601] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:17,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:17,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 20:59:17,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192362358] [2021-10-13 20:59:17,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:59:17,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:17,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:59:17,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:59:17,248 INFO L87 Difference]: Start difference. First operand 382 states and 1101 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:19,256 INFO L93 Difference]: Finished difference Result 758 states and 2004 transitions. [2021-10-13 20:59:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 20:59:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:59:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:19,261 INFO L225 Difference]: With dead ends: 758 [2021-10-13 20:59:19,262 INFO L226 Difference]: Without dead ends: 758 [2021-10-13 20:59:19,263 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1596.2ms TimeCoverageRelationStatistics Valid=426, Invalid=1466, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 20:59:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-10-13 20:59:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 388. [2021-10-13 20:59:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 2.8940568475452197) internal successors, (1120), 387 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1120 transitions. [2021-10-13 20:59:19,277 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1120 transitions. Word has length 18 [2021-10-13 20:59:19,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:19,277 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 1120 transitions. [2021-10-13 20:59:19,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:19,278 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1120 transitions. [2021-10-13 20:59:19,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 20:59:19,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:19,279 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:19,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:19,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:19,492 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:19,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:19,493 INFO L82 PathProgramCache]: Analyzing trace with hash -528942928, now seen corresponding path program 27 times [2021-10-13 20:59:19,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:19,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74648473] [2021-10-13 20:59:19,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:59:19,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:19,496 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:19,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 20:59:19,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:59:19,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:19,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:59:19,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:19,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:20,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:20,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74648473] [2021-10-13 20:59:20,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74648473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:20,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:20,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-10-13 20:59:20,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382956783] [2021-10-13 20:59:20,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:59:20,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:59:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:59:20,343 INFO L87 Difference]: Start difference. First operand 388 states and 1120 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:21,905 INFO L93 Difference]: Finished difference Result 560 states and 1495 transitions. [2021-10-13 20:59:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 20:59:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 20:59:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:21,909 INFO L225 Difference]: With dead ends: 560 [2021-10-13 20:59:21,909 INFO L226 Difference]: Without dead ends: 560 [2021-10-13 20:59:21,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1456.1ms TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 20:59:21,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-13 20:59:21,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 384. [2021-10-13 20:59:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 2.882506527415144) internal successors, (1104), 383 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1104 transitions. [2021-10-13 20:59:21,922 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1104 transitions. Word has length 18 [2021-10-13 20:59:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:21,922 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1104 transitions. [2021-10-13 20:59:21,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1104 transitions. [2021-10-13 20:59:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 20:59:21,924 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:21,924 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:21,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-13 20:59:22,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:22,137 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:22,138 INFO L82 PathProgramCache]: Analyzing trace with hash 708029038, now seen corresponding path program 28 times [2021-10-13 20:59:22,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:22,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236396404] [2021-10-13 20:59:22,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:59:22,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:22,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:22,140 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:22,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 20:59:22,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:59:22,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:22,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:59:22,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:22,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:22,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:23,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:23,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236396404] [2021-10-13 20:59:23,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236396404] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:23,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:23,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-10-13 20:59:23,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159094018] [2021-10-13 20:59:23,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:59:23,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:59:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:59:23,382 INFO L87 Difference]: Start difference. First operand 384 states and 1104 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:24,529 INFO L93 Difference]: Finished difference Result 575 states and 1597 transitions. [2021-10-13 20:59:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 20:59:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 20:59:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:24,533 INFO L225 Difference]: With dead ends: 575 [2021-10-13 20:59:24,533 INFO L226 Difference]: Without dead ends: 532 [2021-10-13 20:59:24,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 463.4ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:59:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-13 20:59:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 448. [2021-10-13 20:59:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 2.9194630872483223) internal successors, (1305), 447 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1305 transitions. [2021-10-13 20:59:24,546 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1305 transitions. Word has length 19 [2021-10-13 20:59:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:24,547 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1305 transitions. [2021-10-13 20:59:24,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1305 transitions. [2021-10-13 20:59:24,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 20:59:24,549 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:24,550 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:24,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-10-13 20:59:24,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:24,760 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:24,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:24,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1092699442, now seen corresponding path program 29 times [2021-10-13 20:59:24,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:24,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915709059] [2021-10-13 20:59:24,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:59:24,762 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:24,763 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:24,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 20:59:25,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 20:59:25,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:25,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:59:25,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:25,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 20:59:25,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:25,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915709059] [2021-10-13 20:59:25,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915709059] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:25,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:25,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-10-13 20:59:25,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664541701] [2021-10-13 20:59:25,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:59:25,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:59:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:59:25,667 INFO L87 Difference]: Start difference. First operand 448 states and 1305 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:28,178 INFO L93 Difference]: Finished difference Result 640 states and 1749 transitions. [2021-10-13 20:59:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 20:59:28,179 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 20:59:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:28,187 INFO L225 Difference]: With dead ends: 640 [2021-10-13 20:59:28,188 INFO L226 Difference]: Without dead ends: 632 [2021-10-13 20:59:28,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2246.7ms TimeCoverageRelationStatistics Valid=378, Invalid=1262, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 20:59:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-13 20:59:28,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 470. [2021-10-13 20:59:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 2.9509594882729213) internal successors, (1384), 469 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1384 transitions. [2021-10-13 20:59:28,205 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1384 transitions. Word has length 19 [2021-10-13 20:59:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:28,205 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1384 transitions. [2021-10-13 20:59:28,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1384 transitions. [2021-10-13 20:59:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:59:28,207 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:28,207 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:28,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:28,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:28,421 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1910088004, now seen corresponding path program 30 times [2021-10-13 20:59:28,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:28,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582656031] [2021-10-13 20:59:28,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:59:28,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:28,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:28,424 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:28,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 20:59:28,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 20:59:28,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:28,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:59:28,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:28,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:29,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:29,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582656031] [2021-10-13 20:59:29,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582656031] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:29,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:29,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 20:59:29,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765799940] [2021-10-13 20:59:29,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:59:29,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:59:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:59:29,432 INFO L87 Difference]: Start difference. First operand 470 states and 1384 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:37,338 INFO L93 Difference]: Finished difference Result 900 states and 2331 transitions. [2021-10-13 20:59:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 20:59:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 20:59:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:37,344 INFO L225 Difference]: With dead ends: 900 [2021-10-13 20:59:37,344 INFO L226 Difference]: Without dead ends: 864 [2021-10-13 20:59:37,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 6388.1ms TimeCoverageRelationStatistics Valid=541, Invalid=1909, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 20:59:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-10-13 20:59:37,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 516. [2021-10-13 20:59:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 2.9728155339805826) internal successors, (1531), 515 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1531 transitions. [2021-10-13 20:59:37,362 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1531 transitions. Word has length 20 [2021-10-13 20:59:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:37,362 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 1531 transitions. [2021-10-13 20:59:37,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1531 transitions. [2021-10-13 20:59:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:59:37,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:37,364 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:37,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 20:59:37,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:37,578 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:37,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1311793912, now seen corresponding path program 31 times [2021-10-13 20:59:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:37,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069828008] [2021-10-13 20:59:37,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:59:37,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:37,581 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:37,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 20:59:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:59:37,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:59:37,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:38,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:39,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:39,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069828008] [2021-10-13 20:59:39,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069828008] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:39,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:39,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 20:59:39,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915519390] [2021-10-13 20:59:39,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:59:39,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:59:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:59:39,587 INFO L87 Difference]: Start difference. First operand 516 states and 1531 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:59:57,840 INFO L93 Difference]: Finished difference Result 894 states and 2371 transitions. [2021-10-13 20:59:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 20:59:57,841 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 20:59:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:59:57,846 INFO L225 Difference]: With dead ends: 894 [2021-10-13 20:59:57,846 INFO L226 Difference]: Without dead ends: 866 [2021-10-13 20:59:57,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 16821.2ms TimeCoverageRelationStatistics Valid=706, Invalid=2716, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 20:59:57,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-13 20:59:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 568. [2021-10-13 20:59:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 2.982363315696649) internal successors, (1691), 567 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1691 transitions. [2021-10-13 20:59:57,863 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1691 transitions. Word has length 20 [2021-10-13 20:59:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:59:57,863 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 1691 transitions. [2021-10-13 20:59:57,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:59:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1691 transitions. [2021-10-13 20:59:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:59:57,865 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:59:57,865 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:59:57,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-13 20:59:58,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:59:58,079 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 20:59:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:59:58,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1493768388, now seen corresponding path program 32 times [2021-10-13 20:59:58,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:59:58,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884940476] [2021-10-13 20:59:58,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:59:58,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:59:58,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:59:58,082 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:59:58,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 20:59:58,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:59:58,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:59:58,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:59:58,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:59:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:58,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:59:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:59:59,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:59:59,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884940476] [2021-10-13 20:59:59,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884940476] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:59:59,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:59:59,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 20:59:59,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457345296] [2021-10-13 20:59:59,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 20:59:59,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:59:59,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 20:59:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:59:59,688 INFO L87 Difference]: Start difference. First operand 568 states and 1691 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:00:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:00:22,961 INFO L93 Difference]: Finished difference Result 1220 states and 3145 transitions. [2021-10-13 21:00:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 21:00:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:00:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:00:22,968 INFO L225 Difference]: With dead ends: 1220 [2021-10-13 21:00:22,968 INFO L226 Difference]: Without dead ends: 1168 [2021-10-13 21:00:22,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 20602.7ms TimeCoverageRelationStatistics Valid=823, Invalid=3599, Unknown=0, NotChecked=0, Total=4422 [2021-10-13 21:00:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-10-13 21:00:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 628. [2021-10-13 21:00:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 2.9872408293460926) internal successors, (1873), 627 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:00:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1873 transitions. [2021-10-13 21:00:22,990 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1873 transitions. Word has length 20 [2021-10-13 21:00:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:00:22,990 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1873 transitions. [2021-10-13 21:00:22,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:00:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1873 transitions. [2021-10-13 21:00:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:00:22,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:00:22,993 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:00:23,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-13 21:00:23,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:00:23,193 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:00:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:00:23,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1941980152, now seen corresponding path program 33 times [2021-10-13 21:00:23,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:00:23,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563013052] [2021-10-13 21:00:23,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:00:23,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:00:23,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:00:23,197 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:00:23,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 21:00:23,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 21:00:23,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:00:23,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 21:00:23,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:00:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:00:23,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:00:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:00:24,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:00:24,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563013052] [2021-10-13 21:00:24,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563013052] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:00:24,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:00:24,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:00:24,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775700263] [2021-10-13 21:00:24,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:00:24,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:00:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:00:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:00:24,723 INFO L87 Difference]: Start difference. First operand 628 states and 1873 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:00:39,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:00:39,879 INFO L93 Difference]: Finished difference Result 1044 states and 2828 transitions. [2021-10-13 21:00:39,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-13 21:00:39,881 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:00:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:00:39,887 INFO L225 Difference]: With dead ends: 1044 [2021-10-13 21:00:39,887 INFO L226 Difference]: Without dead ends: 1008 [2021-10-13 21:00:39,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 11677.4ms TimeCoverageRelationStatistics Valid=864, Invalid=3042, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 21:00:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-10-13 21:00:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 694. [2021-10-13 21:00:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 2.9927849927849928) internal successors, (2074), 693 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:00:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2074 transitions. [2021-10-13 21:00:39,912 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2074 transitions. Word has length 20 [2021-10-13 21:00:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:00:39,912 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 2074 transitions. [2021-10-13 21:00:39,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:00:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2074 transitions. [2021-10-13 21:00:39,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:00:39,915 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:00:39,915 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:00:39,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-13 21:00:40,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:00:40,129 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:00:40,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:00:40,130 INFO L82 PathProgramCache]: Analyzing trace with hash 868894772, now seen corresponding path program 34 times [2021-10-13 21:00:40,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:00:40,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633944255] [2021-10-13 21:00:40,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:00:40,132 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:00:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:00:40,133 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:00:40,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 21:00:40,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:00:40,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:00:40,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:00:40,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:00:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:00:40,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:00:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:00:41,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:00:41,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633944255] [2021-10-13 21:00:41,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633944255] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:00:41,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:00:41,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:00:41,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805981849] [2021-10-13 21:00:41,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:00:41,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:00:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:00:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:00:41,700 INFO L87 Difference]: Start difference. First operand 694 states and 2074 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:01:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:01:06,468 INFO L93 Difference]: Finished difference Result 1254 states and 3340 transitions. [2021-10-13 21:01:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 21:01:06,470 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:01:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:01:06,476 INFO L225 Difference]: With dead ends: 1254 [2021-10-13 21:01:06,476 INFO L226 Difference]: Without dead ends: 1226 [2021-10-13 21:01:06,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 22040.5ms TimeCoverageRelationStatistics Valid=763, Invalid=2777, Unknown=0, NotChecked=0, Total=3540 [2021-10-13 21:01:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2021-10-13 21:01:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 752. [2021-10-13 21:01:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 3.0319573901464714) internal successors, (2277), 751 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:01:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2277 transitions. [2021-10-13 21:01:06,498 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2277 transitions. Word has length 20 [2021-10-13 21:01:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:01:06,499 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 2277 transitions. [2021-10-13 21:01:06,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:01:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2277 transitions. [2021-10-13 21:01:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:01:06,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:01:06,501 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:01:06,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-13 21:01:06,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:01:06,704 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:01:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:01:06,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1936667528, now seen corresponding path program 35 times [2021-10-13 21:01:06,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:01:06,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390409156] [2021-10-13 21:01:06,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:01:06,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:01:06,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:01:06,707 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:01:06,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-13 21:01:07,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 21:01:07,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:01:07,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:01:07,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:01:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:01:07,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:01:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:01:08,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:01:08,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390409156] [2021-10-13 21:01:08,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390409156] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:01:08,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:01:08,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:01:08,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084702057] [2021-10-13 21:01:08,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:01:08,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:01:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:01:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:01:08,378 INFO L87 Difference]: Start difference. First operand 752 states and 2277 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:01:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:01:54,988 INFO L93 Difference]: Finished difference Result 1534 states and 4238 transitions. [2021-10-13 21:01:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-10-13 21:01:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:01:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:01:54,994 INFO L225 Difference]: With dead ends: 1534 [2021-10-13 21:01:54,994 INFO L226 Difference]: Without dead ends: 1506 [2021-10-13 21:01:54,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3342 ImplicationChecksByTransitivity, 40047.0ms TimeCoverageRelationStatistics Valid=1732, Invalid=8168, Unknown=0, NotChecked=0, Total=9900 [2021-10-13 21:01:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-10-13 21:01:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 968. [2021-10-13 21:01:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 3.1240951396070322) internal successors, (3021), 967 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:01:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 3021 transitions. [2021-10-13 21:01:55,031 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 3021 transitions. Word has length 20 [2021-10-13 21:01:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:01:55,031 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 3021 transitions. [2021-10-13 21:01:55,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:01:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 3021 transitions. [2021-10-13 21:01:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:01:55,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:01:55,034 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:01:55,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-13 21:01:55,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:01:55,248 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:01:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:01:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1550368096, now seen corresponding path program 36 times [2021-10-13 21:01:55,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:01:55,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598433342] [2021-10-13 21:01:55,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:01:55,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:01:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:01:55,251 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:01:55,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-13 21:01:55,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-13 21:01:55,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:01:55,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:01:55,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:01:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:01:55,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:01:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:01:57,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:01:57,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598433342] [2021-10-13 21:01:57,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598433342] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:01:57,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:01:57,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-13 21:01:57,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69802343] [2021-10-13 21:01:57,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 21:01:57,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:01:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 21:01:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2021-10-13 21:01:57,090 INFO L87 Difference]: Start difference. First operand 968 states and 3021 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:02:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:02:30,620 INFO L93 Difference]: Finished difference Result 1808 states and 5113 transitions. [2021-10-13 21:02:30,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-13 21:02:30,621 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:02:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:02:30,627 INFO L225 Difference]: With dead ends: 1808 [2021-10-13 21:02:30,627 INFO L226 Difference]: Without dead ends: 1806 [2021-10-13 21:02:30,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 21814.1ms TimeCoverageRelationStatistics Valid=1067, Invalid=5739, Unknown=0, NotChecked=0, Total=6806 [2021-10-13 21:02:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-10-13 21:02:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1246. [2021-10-13 21:02:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.2465863453815262) internal successors, (4042), 1245 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:02:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4042 transitions. [2021-10-13 21:02:30,666 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4042 transitions. Word has length 20 [2021-10-13 21:02:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:02:30,666 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4042 transitions. [2021-10-13 21:02:30,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:02:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4042 transitions. [2021-10-13 21:02:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:02:30,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:02:30,670 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:02:30,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-13 21:02:30,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:02:30,884 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:02:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:02:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash 689709628, now seen corresponding path program 37 times [2021-10-13 21:02:30,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:02:30,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965331685] [2021-10-13 21:02:30,885 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:02:30,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:02:30,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:02:30,887 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:02:30,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-13 21:02:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:02:31,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:02:31,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:02:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:02:31,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:02:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:02:32,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:02:32,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965331685] [2021-10-13 21:02:32,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965331685] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:02:32,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:02:32,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-13 21:02:32,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659750822] [2021-10-13 21:02:32,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 21:02:32,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:02:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 21:02:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:02:32,285 INFO L87 Difference]: Start difference. First operand 1246 states and 4042 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:02:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:02:42,811 INFO L93 Difference]: Finished difference Result 2034 states and 6350 transitions. [2021-10-13 21:02:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-13 21:02:42,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:02:42,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:02:42,818 INFO L225 Difference]: With dead ends: 2034 [2021-10-13 21:02:42,818 INFO L226 Difference]: Without dead ends: 2022 [2021-10-13 21:02:42,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 7774.1ms TimeCoverageRelationStatistics Valid=950, Invalid=3340, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 21:02:42,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2021-10-13 21:02:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1416. [2021-10-13 21:02:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.3017667844522967) internal successors, (4672), 1415 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:02:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4672 transitions. [2021-10-13 21:02:42,928 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4672 transitions. Word has length 20 [2021-10-13 21:02:42,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:02:42,931 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 4672 transitions. [2021-10-13 21:02:42,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:02:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4672 transitions. [2021-10-13 21:02:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:02:42,937 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:02:42,938 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:02:42,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-13 21:02:43,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:02:43,152 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:02:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:02:43,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1962986360, now seen corresponding path program 38 times [2021-10-13 21:02:43,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:02:43,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607351791] [2021-10-13 21:02:43,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:02:43,153 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:02:43,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:02:43,154 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:02:43,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-13 21:02:43,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:02:43,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:02:43,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:02:43,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:02:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:02:43,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:02:45,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:02:45,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:02:45,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607351791] [2021-10-13 21:02:45,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607351791] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:02:45,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:02:45,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:02:45,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373573715] [2021-10-13 21:02:45,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:02:45,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:02:45,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:02:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:02:45,104 INFO L87 Difference]: Start difference. First operand 1416 states and 4672 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:03:02,015 INFO L93 Difference]: Finished difference Result 1956 states and 5836 transitions. [2021-10-13 21:03:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-13 21:03:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:03:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:03:02,019 INFO L225 Difference]: With dead ends: 1956 [2021-10-13 21:03:02,020 INFO L226 Difference]: Without dead ends: 1924 [2021-10-13 21:03:02,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 14315.6ms TimeCoverageRelationStatistics Valid=826, Invalid=3464, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 21:03:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-10-13 21:03:02,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1512. [2021-10-13 21:03:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.3183322303110523) internal successors, (5014), 1511 states have internal predecessors, (5014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5014 transitions. [2021-10-13 21:03:02,067 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5014 transitions. Word has length 20 [2021-10-13 21:03:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:03:02,067 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5014 transitions. [2021-10-13 21:03:02,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5014 transitions. [2021-10-13 21:03:02,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:03:02,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:03:02,071 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:03:02,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-13 21:03:02,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:03:02,272 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:03:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:03:02,273 INFO L82 PathProgramCache]: Analyzing trace with hash -842575940, now seen corresponding path program 39 times [2021-10-13 21:03:02,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:03:02,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680299441] [2021-10-13 21:03:02,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:03:02,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:03:02,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:03:02,276 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:03:02,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-13 21:03:02,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 21:03:02,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:03:02,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 21:03:02,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:03:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:03:02,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:03:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:03:04,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:03:04,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680299441] [2021-10-13 21:03:04,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680299441] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:03:04,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:03:04,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:03:04,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522246078] [2021-10-13 21:03:04,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:03:04,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:03:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:03:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:03:04,103 INFO L87 Difference]: Start difference. First operand 1512 states and 5014 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:03:22,355 INFO L93 Difference]: Finished difference Result 1854 states and 5801 transitions. [2021-10-13 21:03:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-13 21:03:22,358 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:03:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:03:22,365 INFO L225 Difference]: With dead ends: 1854 [2021-10-13 21:03:22,365 INFO L226 Difference]: Without dead ends: 1830 [2021-10-13 21:03:22,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1419 ImplicationChecksByTransitivity, 17152.0ms TimeCoverageRelationStatistics Valid=1049, Invalid=4063, Unknown=0, NotChecked=0, Total=5112 [2021-10-13 21:03:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-10-13 21:03:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1562. [2021-10-13 21:03:22,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1561 states have (on average 3.325432415118514) internal successors, (5191), 1561 states have internal predecessors, (5191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 5191 transitions. [2021-10-13 21:03:22,417 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 5191 transitions. Word has length 20 [2021-10-13 21:03:22,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:03:22,417 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 5191 transitions. [2021-10-13 21:03:22,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 5191 transitions. [2021-10-13 21:03:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:03:22,423 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:03:22,423 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:03:22,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2021-10-13 21:03:22,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:03:22,637 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:03:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:03:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash -384653576, now seen corresponding path program 40 times [2021-10-13 21:03:22,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:03:22,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781302870] [2021-10-13 21:03:22,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:03:22,638 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:03:22,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:03:22,639 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:03:22,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-13 21:03:23,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:03:23,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:03:23,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:03:23,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:03:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:03:23,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:03:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:03:24,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:03:24,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781302870] [2021-10-13 21:03:24,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781302870] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:03:24,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:03:24,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:03:24,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561257314] [2021-10-13 21:03:24,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:03:24,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:03:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:03:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:03:24,051 INFO L87 Difference]: Start difference. First operand 1562 states and 5191 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:03:38,557 INFO L93 Difference]: Finished difference Result 2328 states and 7224 transitions. [2021-10-13 21:03:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-13 21:03:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:03:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:03:38,566 INFO L225 Difference]: With dead ends: 2328 [2021-10-13 21:03:38,567 INFO L226 Difference]: Without dead ends: 2328 [2021-10-13 21:03:38,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1879 ImplicationChecksByTransitivity, 10218.7ms TimeCoverageRelationStatistics Valid=1044, Invalid=4656, Unknown=0, NotChecked=0, Total=5700 [2021-10-13 21:03:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-10-13 21:03:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1666. [2021-10-13 21:03:38,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 3.329129129129129) internal successors, (5543), 1665 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:38,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 5543 transitions. [2021-10-13 21:03:38,623 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 5543 transitions. Word has length 20 [2021-10-13 21:03:38,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:03:38,624 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 5543 transitions. [2021-10-13 21:03:38,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:03:38,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 5543 transitions. [2021-10-13 21:03:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:03:38,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:03:38,629 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:03:38,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-13 21:03:38,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:03:38,845 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:03:38,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:03:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash -683932002, now seen corresponding path program 41 times [2021-10-13 21:03:38,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:03:38,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106636833] [2021-10-13 21:03:38,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:03:38,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:03:38,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:03:38,849 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:03:38,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-13 21:03:39,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 21:03:39,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:03:39,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 21:03:39,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:03:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:03:39,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:03:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:03:40,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:03:40,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106636833] [2021-10-13 21:03:40,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106636833] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:03:40,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:03:40,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:03:40,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666038275] [2021-10-13 21:03:40,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:03:40,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:03:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:03:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:03:40,375 INFO L87 Difference]: Start difference. First operand 1666 states and 5543 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:04:02,758 INFO L93 Difference]: Finished difference Result 2498 states and 7618 transitions. [2021-10-13 21:04:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 21:04:02,760 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:04:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:04:02,769 INFO L225 Difference]: With dead ends: 2498 [2021-10-13 21:04:02,770 INFO L226 Difference]: Without dead ends: 2434 [2021-10-13 21:04:02,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 19590.1ms TimeCoverageRelationStatistics Valid=675, Invalid=2405, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 21:04:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-10-13 21:04:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1834. [2021-10-13 21:04:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 3.330605564648118) internal successors, (6105), 1833 states have internal predecessors, (6105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 6105 transitions. [2021-10-13 21:04:02,840 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 6105 transitions. Word has length 20 [2021-10-13 21:04:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:04:02,840 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 6105 transitions. [2021-10-13 21:04:02,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 6105 transitions. [2021-10-13 21:04:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:04:02,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:04:02,846 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:04:02,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-13 21:04:03,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:04:03,061 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:04:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:04:03,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1396478658, now seen corresponding path program 42 times [2021-10-13 21:04:03,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:04:03,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495729350] [2021-10-13 21:04:03,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:04:03,063 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:04:03,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:04:03,064 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:04:03,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-13 21:04:03,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 21:04:03,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:04:03,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 21:04:03,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:04:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:04:03,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:04:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:04:04,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:04:04,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495729350] [2021-10-13 21:04:04,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495729350] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:04:04,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:04:04,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2021-10-13 21:04:04,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860202188] [2021-10-13 21:04:04,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 21:04:04,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:04:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 21:04:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 21:04:04,232 INFO L87 Difference]: Start difference. First operand 1834 states and 6105 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:04:10,344 INFO L93 Difference]: Finished difference Result 2356 states and 7452 transitions. [2021-10-13 21:04:10,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 21:04:10,345 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:04:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:04:10,350 INFO L225 Difference]: With dead ends: 2356 [2021-10-13 21:04:10,350 INFO L226 Difference]: Without dead ends: 2344 [2021-10-13 21:04:10,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4131.1ms TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 21:04:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2021-10-13 21:04:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2010. [2021-10-13 21:04:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 3.338476854156297) internal successors, (6707), 2009 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 6707 transitions. [2021-10-13 21:04:10,393 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 6707 transitions. Word has length 20 [2021-10-13 21:04:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:04:10,393 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 6707 transitions. [2021-10-13 21:04:10,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:10,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 6707 transitions. [2021-10-13 21:04:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:04:10,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:04:10,397 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:04:10,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-13 21:04:10,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:04:10,598 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:04:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:04:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash 157159498, now seen corresponding path program 43 times [2021-10-13 21:04:10,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:04:10,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002525836] [2021-10-13 21:04:10,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:04:10,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:04:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:04:10,601 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:04:10,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-13 21:04:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:04:10,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:04:10,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:04:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:04:11,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:04:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:04:12,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:04:12,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002525836] [2021-10-13 21:04:12,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002525836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:04:12,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:04:12,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:04:12,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18235413] [2021-10-13 21:04:12,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:04:12,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:04:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:04:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:04:12,297 INFO L87 Difference]: Start difference. First operand 2010 states and 6707 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:04:42,323 INFO L93 Difference]: Finished difference Result 2616 states and 8169 transitions. [2021-10-13 21:04:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 21:04:42,325 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:04:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:04:42,330 INFO L225 Difference]: With dead ends: 2616 [2021-10-13 21:04:42,330 INFO L226 Difference]: Without dead ends: 2600 [2021-10-13 21:04:42,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 25987.8ms TimeCoverageRelationStatistics Valid=595, Invalid=2161, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 21:04:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-10-13 21:04:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2150. [2021-10-13 21:04:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 3.359236854350861) internal successors, (7219), 2149 states have internal predecessors, (7219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 7219 transitions. [2021-10-13 21:04:42,453 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 7219 transitions. Word has length 20 [2021-10-13 21:04:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:04:42,453 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 7219 transitions. [2021-10-13 21:04:42,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:04:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 7219 transitions. [2021-10-13 21:04:42,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:04:42,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:04:42,460 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:04:42,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-13 21:04:42,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:04:42,674 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:04:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:04:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1126831142, now seen corresponding path program 44 times [2021-10-13 21:04:42,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:04:42,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102335677] [2021-10-13 21:04:42,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:04:42,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:04:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:04:42,678 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:04:42,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-13 21:04:43,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:04:43,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:04:43,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:04:43,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:04:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:04:43,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:04:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:04:45,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:04:45,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102335677] [2021-10-13 21:04:45,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102335677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:04:45,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:04:45,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:04:45,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688119163] [2021-10-13 21:04:45,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:04:45,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:04:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:04:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:04:45,295 INFO L87 Difference]: Start difference. First operand 2150 states and 7219 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:05:10,963 INFO L93 Difference]: Finished difference Result 3268 states and 10072 transitions. [2021-10-13 21:05:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-13 21:05:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:05:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:05:10,971 INFO L225 Difference]: With dead ends: 3268 [2021-10-13 21:05:10,971 INFO L226 Difference]: Without dead ends: 3208 [2021-10-13 21:05:10,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 21536.7ms TimeCoverageRelationStatistics Valid=712, Invalid=2710, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 21:05:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-10-13 21:05:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 2260. [2021-10-13 21:05:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 2259 states have (on average 3.3753873395307656) internal successors, (7625), 2259 states have internal predecessors, (7625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 7625 transitions. [2021-10-13 21:05:11,069 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 7625 transitions. Word has length 20 [2021-10-13 21:05:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:05:11,070 INFO L470 AbstractCegarLoop]: Abstraction has 2260 states and 7625 transitions. [2021-10-13 21:05:11,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 7625 transitions. [2021-10-13 21:05:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:05:11,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:05:11,078 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:05:11,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-13 21:05:11,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:05:11,291 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:05:11,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:05:11,292 INFO L82 PathProgramCache]: Analyzing trace with hash -293128442, now seen corresponding path program 45 times [2021-10-13 21:05:11,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:05:11,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146079364] [2021-10-13 21:05:11,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:05:11,294 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:05:11,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:05:11,296 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:05:11,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-13 21:05:12,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 21:05:12,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:05:12,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 21:05:12,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:05:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:05:12,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:05:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:05:13,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:05:13,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146079364] [2021-10-13 21:05:13,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146079364] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:05:13,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:05:13,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-13 21:05:13,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979935363] [2021-10-13 21:05:13,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 21:05:13,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:05:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 21:05:13,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:05:13,238 INFO L87 Difference]: Start difference. First operand 2260 states and 7625 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:05:22,725 INFO L93 Difference]: Finished difference Result 2590 states and 8465 transitions. [2021-10-13 21:05:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 21:05:22,726 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:05:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:05:22,733 INFO L225 Difference]: With dead ends: 2590 [2021-10-13 21:05:22,733 INFO L226 Difference]: Without dead ends: 2586 [2021-10-13 21:05:22,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 7506.4ms TimeCoverageRelationStatistics Valid=499, Invalid=1757, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 21:05:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-10-13 21:05:22,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2350. [2021-10-13 21:05:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 2349 states have (on average 3.3963388676032356) internal successors, (7978), 2349 states have internal predecessors, (7978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 7978 transitions. [2021-10-13 21:05:22,816 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 7978 transitions. Word has length 20 [2021-10-13 21:05:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:05:22,817 INFO L470 AbstractCegarLoop]: Abstraction has 2350 states and 7978 transitions. [2021-10-13 21:05:22,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 7978 transitions. [2021-10-13 21:05:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:05:22,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:05:22,824 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:05:22,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-13 21:05:23,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:05:23,037 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:05:23,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:05:23,038 INFO L82 PathProgramCache]: Analyzing trace with hash 980148290, now seen corresponding path program 46 times [2021-10-13 21:05:23,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:05:23,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410453905] [2021-10-13 21:05:23,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:05:23,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:05:23,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:05:23,040 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:05:23,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-13 21:05:23,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:05:23,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:05:23,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:05:23,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:05:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:05:23,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:05:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:05:25,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:05:25,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410453905] [2021-10-13 21:05:25,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410453905] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:05:25,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:05:25,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:05:25,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423430054] [2021-10-13 21:05:25,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:05:25,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:05:25,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:05:25,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:05:25,113 INFO L87 Difference]: Start difference. First operand 2350 states and 7978 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:05:44,421 INFO L93 Difference]: Finished difference Result 2976 states and 9389 transitions. [2021-10-13 21:05:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-13 21:05:44,422 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:05:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:05:44,429 INFO L225 Difference]: With dead ends: 2976 [2021-10-13 21:05:44,430 INFO L226 Difference]: Without dead ends: 2944 [2021-10-13 21:05:44,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 15689.3ms TimeCoverageRelationStatistics Valid=673, Invalid=2749, Unknown=0, NotChecked=0, Total=3422 [2021-10-13 21:05:44,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-10-13 21:05:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2450. [2021-10-13 21:05:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2449 states have (on average 3.39975500204165) internal successors, (8326), 2449 states have internal predecessors, (8326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:44,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 8326 transitions. [2021-10-13 21:05:44,523 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 8326 transitions. Word has length 20 [2021-10-13 21:05:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:05:44,523 INFO L470 AbstractCegarLoop]: Abstraction has 2450 states and 8326 transitions. [2021-10-13 21:05:44,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:05:44,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 8326 transitions. [2021-10-13 21:05:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:05:44,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:05:44,534 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:05:44,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-13 21:05:44,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:05:44,743 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:05:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:05:44,744 INFO L82 PathProgramCache]: Analyzing trace with hash -32739554, now seen corresponding path program 47 times [2021-10-13 21:05:44,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:05:44,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921407447] [2021-10-13 21:05:44,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:05:44,745 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:05:44,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:05:44,746 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:05:44,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-13 21:05:45,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-13 21:05:45,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:05:45,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 21:05:45,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:05:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:05:45,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:05:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:05:46,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:05:46,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921407447] [2021-10-13 21:05:46,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921407447] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:05:46,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:05:46,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:05:46,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441389975] [2021-10-13 21:05:46,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:05:46,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:05:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:05:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:05:46,697 INFO L87 Difference]: Start difference. First operand 2450 states and 8326 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:06:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:06:17,884 INFO L93 Difference]: Finished difference Result 2928 states and 9372 transitions. [2021-10-13 21:06:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-13 21:06:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:06:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:06:17,890 INFO L225 Difference]: With dead ends: 2928 [2021-10-13 21:06:17,890 INFO L226 Difference]: Without dead ends: 2888 [2021-10-13 21:06:17,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 27167.1ms TimeCoverageRelationStatistics Valid=801, Invalid=3105, Unknown=0, NotChecked=0, Total=3906 [2021-10-13 21:06:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-10-13 21:06:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2482. [2021-10-13 21:06:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2481 states have (on average 3.3978234582829505) internal successors, (8430), 2481 states have internal predecessors, (8430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:06:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 8430 transitions. [2021-10-13 21:06:17,962 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 8430 transitions. Word has length 20 [2021-10-13 21:06:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:06:17,963 INFO L470 AbstractCegarLoop]: Abstraction has 2482 states and 8430 transitions. [2021-10-13 21:06:17,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:06:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 8430 transitions. [2021-10-13 21:06:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:06:17,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:06:17,968 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:06:17,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-13 21:06:18,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:06:18,171 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:06:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:06:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1367491646, now seen corresponding path program 48 times [2021-10-13 21:06:18,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:06:18,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694146289] [2021-10-13 21:06:18,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:06:18,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:06:18,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:06:18,175 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:06:18,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-13 21:06:18,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 21:06:18,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:06:18,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:06:18,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:06:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:06:18,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:06:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:06:19,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:06:19,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694146289] [2021-10-13 21:06:19,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694146289] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:06:19,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:06:19,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:06:19,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754163963] [2021-10-13 21:06:19,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:06:19,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:06:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:06:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:06:19,816 INFO L87 Difference]: Start difference. First operand 2482 states and 8430 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:06:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:06:56,315 INFO L93 Difference]: Finished difference Result 3248 states and 10416 transitions. [2021-10-13 21:06:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-10-13 21:06:56,316 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:06:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:06:56,324 INFO L225 Difference]: With dead ends: 3248 [2021-10-13 21:06:56,324 INFO L226 Difference]: Without dead ends: 3248 [2021-10-13 21:06:56,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2653 ImplicationChecksByTransitivity, 25485.0ms TimeCoverageRelationStatistics Valid=1375, Invalid=6815, Unknown=0, NotChecked=0, Total=8190 [2021-10-13 21:06:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-10-13 21:06:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2714. [2021-10-13 21:06:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2713 states have (on average 3.3925543678584593) internal successors, (9204), 2713 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:06:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 9204 transitions. [2021-10-13 21:06:56,434 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 9204 transitions. Word has length 20 [2021-10-13 21:06:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:06:56,434 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 9204 transitions. [2021-10-13 21:06:56,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:06:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 9204 transitions. [2021-10-13 21:06:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:06:56,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:06:56,441 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:06:56,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-13 21:06:56,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:06:56,642 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:06:56,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:06:56,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1749445966, now seen corresponding path program 49 times [2021-10-13 21:06:56,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:06:56,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88048043] [2021-10-13 21:06:56,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:06:56,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:06:56,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:06:56,646 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:06:56,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-13 21:06:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:06:57,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:06:57,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:06:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:06:57,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:06:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:06:58,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:06:58,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88048043] [2021-10-13 21:06:58,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88048043] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:06:58,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:06:58,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:06:58,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165566316] [2021-10-13 21:06:58,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:06:58,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:06:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:06:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:06:58,272 INFO L87 Difference]: Start difference. First operand 2714 states and 9204 transitions. Second operand has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:21,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:07:21,006 INFO L93 Difference]: Finished difference Result 3652 states and 11540 transitions. [2021-10-13 21:07:21,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-13 21:07:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:07:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:07:21,027 INFO L225 Difference]: With dead ends: 3652 [2021-10-13 21:07:21,027 INFO L226 Difference]: Without dead ends: 3580 [2021-10-13 21:07:21,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 20228.1ms TimeCoverageRelationStatistics Valid=922, Invalid=4048, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 21:07:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2021-10-13 21:07:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 2776. [2021-10-13 21:07:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2775 states have (on average 3.3863063063063064) internal successors, (9397), 2775 states have internal predecessors, (9397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 9397 transitions. [2021-10-13 21:07:21,096 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 9397 transitions. Word has length 20 [2021-10-13 21:07:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:07:21,096 INFO L470 AbstractCegarLoop]: Abstraction has 2776 states and 9397 transitions. [2021-10-13 21:07:21,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 9397 transitions. [2021-10-13 21:07:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:07:21,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:07:21,105 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:07:21,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-13 21:07:21,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:07:21,319 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:07:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:07:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash -106371882, now seen corresponding path program 50 times [2021-10-13 21:07:21,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:07:21,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148383864] [2021-10-13 21:07:21,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:07:21,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:07:21,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:07:21,323 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:07:21,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-13 21:07:21,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:07:21,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:07:21,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:07:21,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:07:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:07:22,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:07:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:07:22,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:07:22,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148383864] [2021-10-13 21:07:22,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148383864] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:07:22,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:07:22,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-13 21:07:22,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870758988] [2021-10-13 21:07:22,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 21:07:22,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:07:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 21:07:22,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:07:22,986 INFO L87 Difference]: Start difference. First operand 2776 states and 9397 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:07:43,934 INFO L93 Difference]: Finished difference Result 3660 states and 11550 transitions. [2021-10-13 21:07:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 21:07:43,935 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:07:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:07:43,943 INFO L225 Difference]: With dead ends: 3660 [2021-10-13 21:07:43,943 INFO L226 Difference]: Without dead ends: 3628 [2021-10-13 21:07:43,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 15440.7ms TimeCoverageRelationStatistics Valid=703, Invalid=2377, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 21:07:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2021-10-13 21:07:44,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 2710. [2021-10-13 21:07:44,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 3.3794758213362863) internal successors, (9155), 2709 states have internal predecessors, (9155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:44,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 9155 transitions. [2021-10-13 21:07:44,038 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 9155 transitions. Word has length 20 [2021-10-13 21:07:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:07:44,038 INFO L470 AbstractCegarLoop]: Abstraction has 2710 states and 9155 transitions. [2021-10-13 21:07:44,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 9155 transitions. [2021-10-13 21:07:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:07:44,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:07:44,050 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:07:44,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-13 21:07:44,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:07:44,258 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:07:44,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:07:44,258 INFO L82 PathProgramCache]: Analyzing trace with hash -497983938, now seen corresponding path program 51 times [2021-10-13 21:07:44,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:07:44,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130319249] [2021-10-13 21:07:44,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:07:44,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:07:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:07:44,261 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:07:44,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-13 21:07:44,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 21:07:44,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:07:44,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 21:07:44,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:07:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:07:45,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:07:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:07:46,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:07:46,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130319249] [2021-10-13 21:07:46,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130319249] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:07:46,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:07:46,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-13 21:07:46,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111937859] [2021-10-13 21:07:46,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 21:07:46,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:07:46,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 21:07:46,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:07:46,144 INFO L87 Difference]: Start difference. First operand 2710 states and 9155 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:07:54,224 INFO L93 Difference]: Finished difference Result 2826 states and 9434 transitions. [2021-10-13 21:07:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 21:07:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:07:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:07:54,233 INFO L225 Difference]: With dead ends: 2826 [2021-10-13 21:07:54,233 INFO L226 Difference]: Without dead ends: 2824 [2021-10-13 21:07:54,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 7024.6ms TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 21:07:54,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-10-13 21:07:54,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2732. [2021-10-13 21:07:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2731 states have (on average 3.380446722812157) internal successors, (9232), 2731 states have internal predecessors, (9232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:54,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 9232 transitions. [2021-10-13 21:07:54,303 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 9232 transitions. Word has length 20 [2021-10-13 21:07:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:07:54,303 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 9232 transitions. [2021-10-13 21:07:54,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:07:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 9232 transitions. [2021-10-13 21:07:54,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:07:54,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:07:54,309 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:07:54,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-13 21:07:54,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:07:54,511 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:07:54,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:07:54,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1358642406, now seen corresponding path program 52 times [2021-10-13 21:07:54,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:07:54,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466750573] [2021-10-13 21:07:54,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 21:07:54,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:07:54,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:07:54,514 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:07:54,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-13 21:07:55,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 21:07:55,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:07:55,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:07:55,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:07:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:07:55,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:07:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:07:56,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:07:56,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466750573] [2021-10-13 21:07:56,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466750573] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:07:56,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:07:56,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-13 21:07:56,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478636113] [2021-10-13 21:07:56,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 21:07:56,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:07:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 21:07:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:07:56,461 INFO L87 Difference]: Start difference. First operand 2732 states and 9232 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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) [2021-10-13 21:08:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:08:06,042 INFO L93 Difference]: Finished difference Result 3754 states and 12068 transitions. [2021-10-13 21:08:06,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 21:08:06,043 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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 20 [2021-10-13 21:08:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:08:06,050 INFO L225 Difference]: With dead ends: 3754 [2021-10-13 21:08:06,050 INFO L226 Difference]: Without dead ends: 3742 [2021-10-13 21:08:06,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 8500.6ms TimeCoverageRelationStatistics Valid=998, Invalid=3694, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 21:08:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-10-13 21:08:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 2850. [2021-10-13 21:08:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 3.388908388908389) internal successors, (9655), 2849 states have internal predecessors, (9655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 9655 transitions. [2021-10-13 21:08:06,123 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 9655 transitions. Word has length 20 [2021-10-13 21:08:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:08:06,123 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 9655 transitions. [2021-10-13 21:08:06,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 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) [2021-10-13 21:08:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 9655 transitions. [2021-10-13 21:08:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:08:06,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:08:06,128 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:08:06,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-13 21:08:06,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:08:06,329 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:08:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:08:06,330 INFO L82 PathProgramCache]: Analyzing trace with hash -85365674, now seen corresponding path program 53 times [2021-10-13 21:08:06,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:08:06,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305304109] [2021-10-13 21:08:06,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 21:08:06,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:08:06,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:08:06,333 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:08:06,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-13 21:08:06,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 21:08:06,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:08:06,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 21:08:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:08:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:07,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:08:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:08,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:08:08,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305304109] [2021-10-13 21:08:08,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305304109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:08:08,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:08:08,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-10-13 21:08:08,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921437753] [2021-10-13 21:08:08,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 21:08:08,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:08:08,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 21:08:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-13 21:08:08,011 INFO L87 Difference]: Start difference. First operand 2850 states and 9655 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:08:13,311 INFO L93 Difference]: Finished difference Result 3586 states and 11671 transitions. [2021-10-13 21:08:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-13 21:08:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:08:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:08:13,319 INFO L225 Difference]: With dead ends: 3586 [2021-10-13 21:08:13,319 INFO L226 Difference]: Without dead ends: 3558 [2021-10-13 21:08:13,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 4718.2ms TimeCoverageRelationStatistics Valid=628, Invalid=1628, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 21:08:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2021-10-13 21:08:13,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 2976. [2021-10-13 21:08:13,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 3.391596638655462) internal successors, (10090), 2975 states have internal predecessors, (10090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 10090 transitions. [2021-10-13 21:08:13,387 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 10090 transitions. Word has length 20 [2021-10-13 21:08:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:08:13,387 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 10090 transitions. [2021-10-13 21:08:13,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 10090 transitions. [2021-10-13 21:08:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:08:13,394 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:08:13,395 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:08:13,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-13 21:08:13,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:08:13,596 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:08:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:08:13,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1861961686, now seen corresponding path program 54 times [2021-10-13 21:08:13,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:08:13,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051904072] [2021-10-13 21:08:13,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 21:08:13,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:08:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:08:13,599 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:08:13,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-13 21:08:14,182 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-13 21:08:14,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:08:14,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:08:14,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:08:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:14,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:08:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:14,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:08:14,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051904072] [2021-10-13 21:08:14,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051904072] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:08:14,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:08:14,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-10-13 21:08:14,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804432873] [2021-10-13 21:08:14,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 21:08:14,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:08:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 21:08:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:08:14,718 INFO L87 Difference]: Start difference. First operand 2976 states and 10090 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:21,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:08:21,423 INFO L93 Difference]: Finished difference Result 3990 states and 12921 transitions. [2021-10-13 21:08:21,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-10-13 21:08:21,423 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 21:08:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:08:21,438 INFO L225 Difference]: With dead ends: 3990 [2021-10-13 21:08:21,438 INFO L226 Difference]: Without dead ends: 3990 [2021-10-13 21:08:21,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 3837.6ms TimeCoverageRelationStatistics Valid=790, Invalid=4612, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 21:08:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2021-10-13 21:08:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 3064. [2021-10-13 21:08:21,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3063 states have (on average 3.3973228860594187) internal successors, (10406), 3063 states have internal predecessors, (10406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:21,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 10406 transitions. [2021-10-13 21:08:21,546 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 10406 transitions. Word has length 20 [2021-10-13 21:08:21,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:08:21,546 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 10406 transitions. [2021-10-13 21:08:21,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 21:08:21,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 10406 transitions. [2021-10-13 21:08:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:08:21,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:08:21,553 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:08:21,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-13 21:08:21,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:08:21,761 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-13 21:08:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:08:21,762 INFO L82 PathProgramCache]: Analyzing trace with hash -298034546, now seen corresponding path program 55 times [2021-10-13 21:08:21,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:08:21,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130663088] [2021-10-13 21:08:21,762 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 21:08:21,763 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:08:21,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:08:21,763 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:08:21,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-13 21:08:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:08:22,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:08:22,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:08:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:22,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:08:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:08:24,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:08:24,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130663088] [2021-10-13 21:08:24,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130663088] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:08:24,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:08:24,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-13 21:08:24,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414999864] [2021-10-13 21:08:24,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 21:08:24,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:08:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 21:08:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:08:24,055 INFO L87 Difference]: Start difference. First operand 3064 states and 10406 transitions. Second operand has 22 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-13 21:08:35,859 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:08:35,862 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:08:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 21:08:35,884 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:08:35,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-13 21:08:36,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:08:36,085 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. [2021-10-13 21:08:36,087 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:08:36,087 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:08:36,087 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:08:36,088 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:08:36,088 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:08:36,088 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:08:36,088 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:08:36,088 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:08:36,088 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:08:36,089 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:08:36,089 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:08:36,097 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:08:36,098 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:08:36,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:08:36 BasicIcfg [2021-10-13 21:08:36,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:08:36,117 INFO L168 Benchmark]: Toolchain (without parser) took 651605.10 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 128.4 MB in the beginning and 119.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 125.3 MB. Max. memory is 8.0 GB. [2021-10-13 21:08:36,118 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 154.1 MB. Free memory is still 134.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:08:36,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.98 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 117.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 21:08:36,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.22 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 115.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 21:08:36,120 INFO L168 Benchmark]: Boogie Preprocessor took 72.01 ms. Allocated memory is still 154.1 MB. Free memory was 115.8 MB in the beginning and 114.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 21:08:36,121 INFO L168 Benchmark]: RCFGBuilder took 705.45 ms. Allocated memory is still 154.1 MB. Free memory was 114.5 MB in the beginning and 131.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2021-10-13 21:08:36,124 INFO L168 Benchmark]: TraceAbstraction took 650420.52 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.5 MB in the beginning and 119.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 127.7 MB. Max. memory is 8.0 GB. [2021-10-13 21:08:36,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 154.1 MB. Free memory is still 134.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 319.98 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 117.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.22 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 115.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.01 ms. Allocated memory is still 154.1 MB. Free memory was 115.8 MB in the beginning and 114.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 705.45 ms. Allocated memory is still 154.1 MB. Free memory was 114.5 MB in the beginning and 131.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 650420.52 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.5 MB in the beginning and 119.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 127.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8252.7ms, 92 PlacesBefore, 32 PlacesAfterwards, 91 TransitionsBefore, 27 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 6 FixpointIterations, 57 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 89 TotalNumberOfCompositions, 759 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 723, positive: 719, positive conditional: 0, positive unconditional: 719, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 413, positive: 409, positive conditional: 0, positive unconditional: 409, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 413, positive: 409, positive conditional: 0, positive unconditional: 409, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 74, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 723, positive: 310, positive conditional: 0, positive unconditional: 310, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 413, unknown conditional: 0, unknown unconditional: 413] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (3064states) and FLOYD_HOARE automaton (currently 33 states, 22 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 45 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 106 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 650268.6ms, OverallIterations: 66, TraceHistogramMax: 4, EmptinessCheckTime: 180.8ms, AutomataDifference: 558383.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8327.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2470 SDtfs, 9434 SDslu, 19087 SDs, 0 SdLazy, 19078 SolverSat, 2610 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 129743.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4511 GetRequests, 2070 SyntacticMatches, 5 SemanticMatches, 2435 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 33503 ImplicationChecksByTransitivity, 452610.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3064occurred in iteration=65, InterpolantAutomatonStates: 2122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2045.4ms AutomataMinimizationTime, 65 MinimizatonAttempts, 18646 StatesRemovedByMinimization, 59 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 450.5ms SsaConstructionTime, 4322.9ms SatisfiabilityAnalysisTime, 48688.2ms InterpolantComputationTime, 1123 NumberOfCodeBlocks, 1112 NumberOfCodeBlocksAsserted, 139 NumberOfCheckSat, 2114 ConstructedInterpolants, 20 QuantifiedInterpolants, 11333 SizeOfPredicates, 221 NumberOfNonLiveVariables, 5316 ConjunctsInSsa, 674 ConjunctsInUnsatCore, 132 InterpolantComputations, 19 PerfectInterpolantSequences, 129/1274 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown