/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-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:50:30,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:50:30,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:50:30,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:50:30,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 17:50:30,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 17:50:30,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 17:50:30,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 17:50:30,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 17:50:30,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 17:50:30,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 17:50:30,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 17:50:30,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 17:50:30,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 17:50:30,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 17:50:30,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 17:50:30,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 17:50:30,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:50:30,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:50:30,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:50:30,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:50:30,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:50:30,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:50:30,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:50:30,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:50:30,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:50:30,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:50:30,210 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:50:30,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:50:30,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:50:30,210 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:50:30,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:50:30,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:50:30,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:50:30,211 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:50:30,211 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:50:30,211 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:50:30,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:50:30,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:50:30,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:50:30,212 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:50:30,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:50:30,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:50:30,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:50:30,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:50:30,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:50:30,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:50:30,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:50:30,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:50:30,214 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:50:30,214 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:50:30,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:50:30,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:50:30,215 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:50:30,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:50:30,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:50:30,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:50:30,617 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:50:30,618 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:50:30,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2021-10-08 17:50:30,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d83c895f/32f2fe3e4da748e899fa94d880424cde/FLAG641842b67 [2021-10-08 17:50:31,410 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:50:31,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2021-10-08 17:50:31,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d83c895f/32f2fe3e4da748e899fa94d880424cde/FLAG641842b67 [2021-10-08 17:50:31,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d83c895f/32f2fe3e4da748e899fa94d880424cde [2021-10-08 17:50:31,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:50:31,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:50:31,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:50:31,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:50:31,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:50:31,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:50:31" (1/1) ... [2021-10-08 17:50:31,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70592c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:31, skipping insertion in model container [2021-10-08 17:50:31,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:50:31" (1/1) ... [2021-10-08 17:50:31,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:50:31,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:50:32,116 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-more-nonblocking-counter-alt2.wvr.c[2075,2088] [2021-10-08 17:50:32,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:50:32,138 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:50:32,164 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-more-nonblocking-counter-alt2.wvr.c[2075,2088] [2021-10-08 17:50:32,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:50:32,186 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:50:32,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32 WrapperNode [2021-10-08 17:50:32,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:50:32,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:50:32,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:50:32,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:50:32,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:50:32,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:50:32,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:50:32,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:50:32,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:50:32,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:50:32,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:50:32,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:50:32,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (1/1) ... [2021-10-08 17:50:32,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:50:32,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:50:32,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:50:32,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:50:32,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:50:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:50:32,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:50:32,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:50:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:50:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:50:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:50:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:50:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:50:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:50:32,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:50:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:50:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:50:32,428 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:50:33,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:50:33,046 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 17:50:33,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:50:33 BoogieIcfgContainer [2021-10-08 17:50:33,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:50:33,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:50:33,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:50:33,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:50:33,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:50:31" (1/3) ... [2021-10-08 17:50:33,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114a5bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:50:33, skipping insertion in model container [2021-10-08 17:50:33,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:50:32" (2/3) ... [2021-10-08 17:50:33,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114a5bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:50:33, skipping insertion in model container [2021-10-08 17:50:33,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:50:33" (3/3) ... [2021-10-08 17:50:33,107 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2021-10-08 17:50:33,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:50:33,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 17:50:33,116 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:50:33,145 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,146 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,146 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,146 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,146 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,147 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,147 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,148 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,148 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,149 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,149 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,150 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,150 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,151 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,151 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,151 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,151 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,152 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,152 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,152 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,152 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,153 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,153 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,153 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,153 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,153 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,154 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,154 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,154 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,158 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,159 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,161 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,162 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,162 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,162 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:50:33,168 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 17:50:33,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:50:33,226 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:50:33,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 17:50:33,244 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:50:33,258 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-08 17:50:33,262 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 88 transitions, 192 flow [2021-10-08 17:50:33,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 192 flow [2021-10-08 17:50:33,311 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2021-10-08 17:50:33,312 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 17:50:33,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-08 17:50:33,320 INFO L116 LiptonReduction]: Number of co-enabled transitions 540 [2021-10-08 17:50:40,668 INFO L131 LiptonReduction]: Checked pairs total: 710 [2021-10-08 17:50:40,669 INFO L133 LiptonReduction]: Total number of compositions: 92 [2021-10-08 17:50:40,680 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 17:50:40,694 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) [2021-10-08 17:50:40,696 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) [2021-10-08 17:50:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:50:40,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:40,702 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:50:40,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:50:40,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:40,709 INFO L82 PathProgramCache]: Analyzing trace with hash 357, now seen corresponding path program 1 times [2021-10-08 17:50:40,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:40,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20046819] [2021-10-08 17:50:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:40,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:40,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:40,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:40,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:50:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:40,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:50:40,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:40,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:40,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:40,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20046819] [2021-10-08 17:50:40,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20046819] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:40,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:40,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:50:40,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856284040] [2021-10-08 17:50:40,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:50:40,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:50:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:50:40,861 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) [2021-10-08 17:50:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:40,887 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-08 17:50:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:50:40,891 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 [2021-10-08 17:50:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:40,918 INFO L225 Difference]: With dead ends: 64 [2021-10-08 17:50:40,918 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 17:50:40,920 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 [2021-10-08 17:50:40,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 17:50:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-08 17:50:40,961 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) [2021-10-08 17:50:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-08 17:50:40,965 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-08 17:50:40,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:40,966 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-08 17:50:40,966 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) [2021-10-08 17:50:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-08 17:50:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:50:40,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:40,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:50:40,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:41,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:41,179 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:50:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:41,180 INFO L82 PathProgramCache]: Analyzing trace with hash 351599, now seen corresponding path program 1 times [2021-10-08 17:50:41,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:41,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061925662] [2021-10-08 17:50:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:41,183 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:41,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:41,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:41,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:50:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:41,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:50:41,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:41,477 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 17:50:41,478 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 [2021-10-08 17:50:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:41,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:42,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:42,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061925662] [2021-10-08 17:50:42,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061925662] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:42,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:42,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:50:42,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533086932] [2021-10-08 17:50:42,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:50:42,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:50:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:50:42,014 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) [2021-10-08 17:50:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:42,058 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-08 17:50:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:50:42,059 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 [2021-10-08 17:50:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:42,064 INFO L225 Difference]: With dead ends: 58 [2021-10-08 17:50:42,065 INFO L226 Difference]: Without dead ends: 58 [2021-10-08 17:50:42,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:50:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-08 17:50:42,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-08 17:50:42,104 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) [2021-10-08 17:50:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-08 17:50:42,106 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-08 17:50:42,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:42,109 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-08 17:50:42,109 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) [2021-10-08 17:50:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-08 17:50:42,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:50:42,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:42,110 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:50:42,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-08 17:50:42,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:42,323 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:50:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash 351601, now seen corresponding path program 1 times [2021-10-08 17:50:42,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:42,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865744783] [2021-10-08 17:50:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:42,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:42,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:42,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:50:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:42,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:50:42,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:42,490 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 17:50:42,490 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 [2021-10-08 17:50:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:42,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:42,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:42,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865744783] [2021-10-08 17:50:42,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865744783] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:42,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:42,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:50:42,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739686969] [2021-10-08 17:50:42,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:50:42,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:50:42,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:50:42,629 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) [2021-10-08 17:50:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:42,654 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-08 17:50:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:50:42,655 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 [2021-10-08 17:50:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:42,656 INFO L225 Difference]: With dead ends: 52 [2021-10-08 17:50:42,656 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:50:42,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:50:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:50:42,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 17:50:42,668 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) [2021-10-08 17:50:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-08 17:50:42,672 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-08 17:50:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:42,672 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-08 17:50:42,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-08 17:50:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:50:42,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:42,673 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:50:42,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:42,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:42,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:50:42,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:42,887 INFO L82 PathProgramCache]: Analyzing trace with hash 337895088, now seen corresponding path program 1 times [2021-10-08 17:50:42,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:42,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212719833] [2021-10-08 17:50:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:42,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:42,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:42,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:42,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:50:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:42,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:50:42,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:43,060 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 17:50:43,061 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 [2021-10-08 17:50:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:43,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:43,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:43,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212719833] [2021-10-08 17:50:43,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212719833] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:43,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:43,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:50:43,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214677767] [2021-10-08 17:50:43,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:50:43,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:50:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:50:43,387 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) [2021-10-08 17:50:43,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:43,407 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-08 17:50:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:50:43,408 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 [2021-10-08 17:50:43,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:43,409 INFO L225 Difference]: With dead ends: 43 [2021-10-08 17:50:43,409 INFO L226 Difference]: Without dead ends: 43 [2021-10-08 17:50:43,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:50:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-08 17:50:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-08 17:50:43,414 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) [2021-10-08 17:50:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-08 17:50:43,415 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-08 17:50:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:43,416 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-08 17:50:43,417 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) [2021-10-08 17:50:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-08 17:50:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:50:43,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:43,418 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:50:43,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:43,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:43,632 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:50:43,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:43,633 INFO L82 PathProgramCache]: Analyzing trace with hash 337895090, now seen corresponding path program 1 times [2021-10-08 17:50:43,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:43,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891920473] [2021-10-08 17:50:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:43,634 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:43,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:43,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:43,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:50:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:43,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:50:43,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:43,788 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-08 17:50:43,788 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 34 treesize of output 50 [2021-10-08 17:50:43,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 87 [2021-10-08 17:50:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:44,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:44,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:44,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891920473] [2021-10-08 17:50:44,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891920473] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:44,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:44,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:50:44,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757060567] [2021-10-08 17:50:44,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:50:44,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:50:44,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:50:44,090 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) [2021-10-08 17:50:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:44,106 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-08 17:50:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:50:44,107 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 [2021-10-08 17:50:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:44,108 INFO L225 Difference]: With dead ends: 34 [2021-10-08 17:50:44,108 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 17:50:44,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:50:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 17:50:44,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 17:50:44,111 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) [2021-10-08 17:50:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-08 17:50:44,112 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-08 17:50:44,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:44,113 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-08 17:50:44,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:44,113 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-08 17:50:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:50:44,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:44,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:44,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:44,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:44,324 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)] === [2021-10-08 17:50:44,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:44,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1554863180, now seen corresponding path program 1 times [2021-10-08 17:50:44,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:44,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088239762] [2021-10-08 17:50:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:44,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:44,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:44,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:44,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:50:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:44,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:50:44,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:44,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:44,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:44,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088239762] [2021-10-08 17:50:44,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088239762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:44,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:44,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:50:44,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580238986] [2021-10-08 17:50:44,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:50:44,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:44,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:50:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:50:44,498 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) [2021-10-08 17:50:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:44,518 INFO L93 Difference]: Finished difference Result 57 states and 124 transitions. [2021-10-08 17:50:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:50:44,519 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 [2021-10-08 17:50:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:44,525 INFO L225 Difference]: With dead ends: 57 [2021-10-08 17:50:44,525 INFO L226 Difference]: Without dead ends: 42 [2021-10-08 17:50:44,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:50:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-08 17:50:44,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-08 17:50:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-08 17:50:44,536 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-08 17:50:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:44,536 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-08 17:50:44,536 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) [2021-10-08 17:50:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-08 17:50:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:50:44,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:44,538 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:44,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:44,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:44,751 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)] === [2021-10-08 17:50:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:44,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1576251979, now seen corresponding path program 1 times [2021-10-08 17:50:44,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:44,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238529277] [2021-10-08 17:50:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:44,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:44,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:44,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:44,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:50:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:44,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:50:44,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:50:44,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:50:44,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:44,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238529277] [2021-10-08 17:50:44,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238529277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:44,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:44,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-08 17:50:44,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997063198] [2021-10-08 17:50:44,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 17:50:44,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:44,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 17:50:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:50:44,928 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:44,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:44,995 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-08 17:50:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:50:44,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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 [2021-10-08 17:50:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:44,997 INFO L225 Difference]: With dead ends: 52 [2021-10-08 17:50:44,997 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:50:44,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:50:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:50:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 17:50:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-08 17:50:45,008 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-08 17:50:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:45,009 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-08 17:50:45,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-08 17:50:45,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:50:45,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:45,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:45,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:45,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:45,213 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)] === [2021-10-08 17:50:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:45,214 INFO L82 PathProgramCache]: Analyzing trace with hash -189416518, now seen corresponding path program 1 times [2021-10-08 17:50:45,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:45,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235837920] [2021-10-08 17:50:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:45,216 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:45,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:45,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:45,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:50:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:45,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:50:45,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:50:45,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:50:45,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:45,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235837920] [2021-10-08 17:50:45,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235837920] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:50:45,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:50:45,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 17:50:45,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751821071] [2021-10-08 17:50:45,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:50:45,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:50:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:50:45,642 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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) [2021-10-08 17:50:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:45,738 INFO L93 Difference]: Finished difference Result 60 states and 134 transitions. [2021-10-08 17:50:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:50:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:50:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:45,740 INFO L225 Difference]: With dead ends: 60 [2021-10-08 17:50:45,740 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 17:50:45,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:50:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 17:50:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2021-10-08 17:50:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 43 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 96 transitions. [2021-10-08 17:50:45,745 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 96 transitions. Word has length 15 [2021-10-08 17:50:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:45,746 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 96 transitions. [2021-10-08 17:50:45,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 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) [2021-10-08 17:50:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 96 transitions. [2021-10-08 17:50:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:50:45,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:45,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:45,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:45,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:45,959 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)] === [2021-10-08 17:50:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1499193478, now seen corresponding path program 2 times [2021-10-08 17:50:45,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:45,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176658997] [2021-10-08 17:50:45,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:50:45,962 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:45,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:45,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:45,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:50:46,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:50:46,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:50:46,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:50:46,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:50:46,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:50:46,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:46,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176658997] [2021-10-08 17:50:46,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176658997] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 17:50:46,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 17:50:46,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2021-10-08 17:50:46,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744699770] [2021-10-08 17:50:46,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:50:46,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:46,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:50:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:50:46,306 INFO L87 Difference]: Start difference. First operand 44 states and 96 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-08 17:50:46,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:46,368 INFO L93 Difference]: Finished difference Result 87 states and 191 transitions. [2021-10-08 17:50:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:50:46,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2021-10-08 17:50:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:46,370 INFO L225 Difference]: With dead ends: 87 [2021-10-08 17:50:46,370 INFO L226 Difference]: Without dead ends: 68 [2021-10-08 17:50:46,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:50:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-08 17:50:46,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2021-10-08 17:50:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.305084745762712) internal successors, (136), 59 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 136 transitions. [2021-10-08 17:50:46,379 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 136 transitions. Word has length 15 [2021-10-08 17:50:46,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:46,379 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 136 transitions. [2021-10-08 17:50:46,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-08 17:50:46,380 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 136 transitions. [2021-10-08 17:50:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:50:46,385 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:46,385 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:46,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:46,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:46,586 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)] === [2021-10-08 17:50:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash 967157397, now seen corresponding path program 3 times [2021-10-08 17:50:46,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:46,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864657741] [2021-10-08 17:50:46,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:50:46,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:46,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:46,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:50:46,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:50:46,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:50:46,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:50:46,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:46,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:47,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:47,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864657741] [2021-10-08 17:50:47,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864657741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:50:47,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:50:47,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-08 17:50:47,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760791105] [2021-10-08 17:50:47,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:50:47,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:50:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:50:47,952 INFO L87 Difference]: Start difference. First operand 60 states and 136 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:50:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:52,595 INFO L93 Difference]: Finished difference Result 131 states and 297 transitions. [2021-10-08 17:50:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:50:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-08 17:50:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:52,597 INFO L225 Difference]: With dead ends: 131 [2021-10-08 17:50:52,597 INFO L226 Difference]: Without dead ends: 124 [2021-10-08 17:50:52,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4076.3ms TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:50:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-08 17:50:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 86. [2021-10-08 17:50:52,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.5764705882352943) internal successors, (219), 85 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 219 transitions. [2021-10-08 17:50:52,605 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 219 transitions. Word has length 16 [2021-10-08 17:50:52,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:52,606 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 219 transitions. [2021-10-08 17:50:52,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:50:52,606 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 219 transitions. [2021-10-08 17:50:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:50:52,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:52,607 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:52,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:52,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:52,825 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)] === [2021-10-08 17:50:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:52,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1610655485, now seen corresponding path program 4 times [2021-10-08 17:50:52,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:52,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129469773] [2021-10-08 17:50:52,827 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:50:52,827 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:52,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:52,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:50:52,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:50:52,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:50:52,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:50:52,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:53,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:54,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:54,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129469773] [2021-10-08 17:50:54,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129469773] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:50:54,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:50:54,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:50:54,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552581165] [2021-10-08 17:50:54,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:50:54,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:50:54,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:50:54,040 INFO L87 Difference]: Start difference. First operand 86 states and 219 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-08 17:50:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:56,801 INFO L93 Difference]: Finished difference Result 190 states and 429 transitions. [2021-10-08 17:50:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:50:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 16 [2021-10-08 17:50:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:56,804 INFO L225 Difference]: With dead ends: 190 [2021-10-08 17:50:56,805 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 17:50:56,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2309.5ms TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:50:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 17:50:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 96. [2021-10-08 17:50:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.7157894736842105) internal successors, (258), 95 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 258 transitions. [2021-10-08 17:50:56,815 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 258 transitions. Word has length 16 [2021-10-08 17:50:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 258 transitions. [2021-10-08 17:50:56,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-08 17:50:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 258 transitions. [2021-10-08 17:50:56,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:50:56,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:56,817 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:56,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:57,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:57,031 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)] === [2021-10-08 17:50:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:57,032 INFO L82 PathProgramCache]: Analyzing trace with hash -47514385, now seen corresponding path program 5 times [2021-10-08 17:50:57,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:57,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029744344] [2021-10-08 17:50:57,033 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:50:57,033 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:57,035 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:57,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:50:57,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:50:57,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:50:57,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:50:57,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:57,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:57,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:57,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029744344] [2021-10-08 17:50:57,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029744344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:50:57,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:50:57,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:50:57,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212748279] [2021-10-08 17:50:57,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:50:57,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:50:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:50:57,730 INFO L87 Difference]: Start difference. First operand 96 states and 258 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:58,212 INFO L93 Difference]: Finished difference Result 156 states and 399 transitions. [2021-10-08 17:50:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:50:58,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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 [2021-10-08 17:50:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:58,214 INFO L225 Difference]: With dead ends: 156 [2021-10-08 17:50:58,214 INFO L226 Difference]: Without dead ends: 156 [2021-10-08 17:50:58,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 415.9ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:50:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-08 17:50:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 114. [2021-10-08 17:50:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.690265486725664) internal successors, (304), 113 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 304 transitions. [2021-10-08 17:50:58,222 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 304 transitions. Word has length 16 [2021-10-08 17:50:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:58,223 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 304 transitions. [2021-10-08 17:50:58,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:50:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 304 transitions. [2021-10-08 17:50:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:50:58,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:58,224 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:58,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 17:50:58,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:50:58,437 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)] === [2021-10-08 17:50:58,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:58,438 INFO L82 PathProgramCache]: Analyzing trace with hash 660798609, now seen corresponding path program 6 times [2021-10-08 17:50:58,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:58,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923175790] [2021-10-08 17:50:58,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:50:58,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:58,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:58,441 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:50:58,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:50:58,572 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:50:58,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:50:58,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:50:58,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:58,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:50:59,583 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:59,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923175790] [2021-10-08 17:50:59,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923175790] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:50:59,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:50:59,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-08 17:50:59,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788386584] [2021-10-08 17:50:59,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:50:59,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:50:59,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:50:59,586 INFO L87 Difference]: Start difference. First operand 114 states and 304 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:51:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:01,237 INFO L93 Difference]: Finished difference Result 185 states and 459 transitions. [2021-10-08 17:51:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:51:01,238 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-08 17:51:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:01,240 INFO L225 Difference]: With dead ends: 185 [2021-10-08 17:51:01,240 INFO L226 Difference]: Without dead ends: 178 [2021-10-08 17:51:01,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1528.4ms TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:51:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-08 17:51:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 126. [2021-10-08 17:51:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.784) internal successors, (348), 125 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 348 transitions. [2021-10-08 17:51:01,249 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 348 transitions. Word has length 16 [2021-10-08 17:51:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:01,249 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 348 transitions. [2021-10-08 17:51:01,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:51:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 348 transitions. [2021-10-08 17:51:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:51:01,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:01,251 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:01,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:01,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:01,460 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)] === [2021-10-08 17:51:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1917014273, now seen corresponding path program 7 times [2021-10-08 17:51:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:01,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301507335] [2021-10-08 17:51:01,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:51:01,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:01,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:01,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:01,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:51:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:51:01,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:51:01,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:01,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:02,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:02,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:02,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301507335] [2021-10-08 17:51:02,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301507335] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:02,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:02,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:51:02,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967570094] [2021-10-08 17:51:02,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:51:02,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:51:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:51:02,394 INFO L87 Difference]: Start difference. First operand 126 states and 348 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-08 17:51:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:04,057 INFO L93 Difference]: Finished difference Result 247 states and 627 transitions. [2021-10-08 17:51:04,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:51:04,058 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 16 [2021-10-08 17:51:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:04,062 INFO L225 Difference]: With dead ends: 247 [2021-10-08 17:51:04,062 INFO L226 Difference]: Without dead ends: 234 [2021-10-08 17:51:04,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1381.4ms TimeCoverageRelationStatistics Valid=232, Invalid=524, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:51:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-08 17:51:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 124. [2021-10-08 17:51:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7235772357723578) internal successors, (335), 123 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 335 transitions. [2021-10-08 17:51:04,070 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 335 transitions. Word has length 16 [2021-10-08 17:51:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:04,071 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 335 transitions. [2021-10-08 17:51:04,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-08 17:51:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 335 transitions. [2021-10-08 17:51:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:51:04,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:04,072 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:04,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-08 17:51:04,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:04,285 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)] === [2021-10-08 17:51:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash -353873173, now seen corresponding path program 8 times [2021-10-08 17:51:04,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:04,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121159474] [2021-10-08 17:51:04,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:51:04,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:04,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:04,289 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:04,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:51:04,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:51:04,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:04,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:51:04,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:04,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:05,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:05,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121159474] [2021-10-08 17:51:05,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121159474] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:05,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:05,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-08 17:51:05,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127170370] [2021-10-08 17:51:05,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:51:05,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:51:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:51:05,009 INFO L87 Difference]: Start difference. First operand 124 states and 335 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:51:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:06,433 INFO L93 Difference]: Finished difference Result 239 states and 568 transitions. [2021-10-08 17:51:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:51:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-08 17:51:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:06,436 INFO L225 Difference]: With dead ends: 239 [2021-10-08 17:51:06,437 INFO L226 Difference]: Without dead ends: 234 [2021-10-08 17:51:06,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1250.8ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-10-08 17:51:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-08 17:51:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 136. [2021-10-08 17:51:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.8518518518518516) internal successors, (385), 135 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 385 transitions. [2021-10-08 17:51:06,445 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 385 transitions. Word has length 16 [2021-10-08 17:51:06,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:06,446 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 385 transitions. [2021-10-08 17:51:06,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:51:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 385 transitions. [2021-10-08 17:51:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:51:06,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:06,447 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:06,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:06,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:06,661 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)] === [2021-10-08 17:51:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:06,662 INFO L82 PathProgramCache]: Analyzing trace with hash -335760671, now seen corresponding path program 9 times [2021-10-08 17:51:06,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:06,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70908133] [2021-10-08 17:51:06,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:51:06,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:06,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:06,665 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:06,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:51:06,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:51:06,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:06,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:51:06,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:07,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:07,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:07,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70908133] [2021-10-08 17:51:07,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70908133] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:07,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:07,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-08 17:51:07,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99404220] [2021-10-08 17:51:07,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:51:07,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:51:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:51:07,367 INFO L87 Difference]: Start difference. First operand 136 states and 385 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:51:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:07,936 INFO L93 Difference]: Finished difference Result 241 states and 628 transitions. [2021-10-08 17:51:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:51:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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 16 [2021-10-08 17:51:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:07,939 INFO L225 Difference]: With dead ends: 241 [2021-10-08 17:51:07,939 INFO L226 Difference]: Without dead ends: 236 [2021-10-08 17:51:07,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 570.6ms TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:51:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-08 17:51:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 152. [2021-10-08 17:51:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.847682119205298) internal successors, (430), 151 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:07,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 430 transitions. [2021-10-08 17:51:07,949 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 430 transitions. Word has length 16 [2021-10-08 17:51:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:07,950 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 430 transitions. [2021-10-08 17:51:07,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 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) [2021-10-08 17:51:07,950 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 430 transitions. [2021-10-08 17:51:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:51:07,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:07,951 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:07,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:08,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:08,164 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)] === [2021-10-08 17:51:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:08,165 INFO L82 PathProgramCache]: Analyzing trace with hash -262146779, now seen corresponding path program 10 times [2021-10-08 17:51:08,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:08,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741340638] [2021-10-08 17:51:08,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:51:08,167 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:08,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:08,168 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:08,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:51:08,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:51:08,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:08,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:51:08,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:08,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:09,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:09,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741340638] [2021-10-08 17:51:09,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741340638] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:09,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:09,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:51:09,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519251752] [2021-10-08 17:51:09,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:51:09,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:09,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:51:09,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:51:09,394 INFO L87 Difference]: Start difference. First operand 152 states and 430 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-08 17:51:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:13,117 INFO L93 Difference]: Finished difference Result 271 states and 673 transitions. [2021-10-08 17:51:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:51:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 16 [2021-10-08 17:51:13,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:13,119 INFO L225 Difference]: With dead ends: 271 [2021-10-08 17:51:13,119 INFO L226 Difference]: Without dead ends: 262 [2021-10-08 17:51:13,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3298.1ms TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:51:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-08 17:51:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 164. [2021-10-08 17:51:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.920245398773006) internal successors, (476), 163 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 476 transitions. [2021-10-08 17:51:13,129 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 476 transitions. Word has length 16 [2021-10-08 17:51:13,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:13,129 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 476 transitions. [2021-10-08 17:51:13,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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) [2021-10-08 17:51:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 476 transitions. [2021-10-08 17:51:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:51:13,130 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:13,130 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:13,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-08 17:51:13,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:13,343 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)] === [2021-10-08 17:51:13,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:13,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1455007635, now seen corresponding path program 11 times [2021-10-08 17:51:13,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:13,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625227869] [2021-10-08 17:51:13,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:51:13,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:13,347 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:13,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:51:13,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:51:13,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:13,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:51:13,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:13,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:14,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:14,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625227869] [2021-10-08 17:51:14,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625227869] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:14,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:14,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-08 17:51:14,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856781538] [2021-10-08 17:51:14,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:51:14,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:51:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:51:14,087 INFO L87 Difference]: Start difference. First operand 164 states and 476 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:14,947 INFO L93 Difference]: Finished difference Result 344 states and 861 transitions. [2021-10-08 17:51:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:51:14,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 17:51:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:14,951 INFO L225 Difference]: With dead ends: 344 [2021-10-08 17:51:14,952 INFO L226 Difference]: Without dead ends: 336 [2021-10-08 17:51:14,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 714.6ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:51:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-08 17:51:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 188. [2021-10-08 17:51:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.9732620320855614) internal successors, (556), 187 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 556 transitions. [2021-10-08 17:51:14,963 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 556 transitions. Word has length 16 [2021-10-08 17:51:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:14,963 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 556 transitions. [2021-10-08 17:51:14,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 556 transitions. [2021-10-08 17:51:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:51:14,965 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:14,965 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:14,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:15,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:15,178 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)] === [2021-10-08 17:51:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:15,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1261501876, now seen corresponding path program 12 times [2021-10-08 17:51:15,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:15,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650920023] [2021-10-08 17:51:15,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:51:15,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:15,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:15,182 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:15,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:51:15,402 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:51:15,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:15,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:51:15,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:15,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:16,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:16,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650920023] [2021-10-08 17:51:16,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650920023] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:16,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:16,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 17:51:16,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372470881] [2021-10-08 17:51:16,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:51:16,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:51:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:51:16,243 INFO L87 Difference]: Start difference. First operand 188 states and 556 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-08 17:51:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:18,389 INFO L93 Difference]: Finished difference Result 413 states and 1050 transitions. [2021-10-08 17:51:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 17:51:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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 [2021-10-08 17:51:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:18,394 INFO L225 Difference]: With dead ends: 413 [2021-10-08 17:51:18,394 INFO L226 Difference]: Without dead ends: 398 [2021-10-08 17:51:18,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1849.2ms TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:51:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-08 17:51:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 230. [2021-10-08 17:51:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 3.091703056768559) internal successors, (708), 229 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 708 transitions. [2021-10-08 17:51:18,408 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 708 transitions. Word has length 17 [2021-10-08 17:51:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:18,408 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 708 transitions. [2021-10-08 17:51:18,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-08 17:51:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 708 transitions. [2021-10-08 17:51:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:51:18,410 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:18,410 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:18,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:18,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:18,624 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)] === [2021-10-08 17:51:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:18,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1821274500, now seen corresponding path program 13 times [2021-10-08 17:51:18,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:18,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239751563] [2021-10-08 17:51:18,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:51:18,626 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:18,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:18,628 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:18,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:51:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:51:18,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:51:18,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:19,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:19,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:19,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239751563] [2021-10-08 17:51:19,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239751563] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:19,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:19,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-08 17:51:19,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824055101] [2021-10-08 17:51:19,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 17:51:19,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 17:51:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-08 17:51:19,290 INFO L87 Difference]: Start difference. First operand 230 states and 708 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:19,613 INFO L93 Difference]: Finished difference Result 394 states and 1118 transitions. [2021-10-08 17:51:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 17:51:19,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:51:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:19,617 INFO L225 Difference]: With dead ends: 394 [2021-10-08 17:51:19,617 INFO L226 Difference]: Without dead ends: 371 [2021-10-08 17:51:19,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:51:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-10-08 17:51:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 272. [2021-10-08 17:51:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 3.103321033210332) internal successors, (841), 271 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 841 transitions. [2021-10-08 17:51:19,635 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 841 transitions. Word has length 17 [2021-10-08 17:51:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:19,635 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 841 transitions. [2021-10-08 17:51:19,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 841 transitions. [2021-10-08 17:51:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:51:19,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:19,637 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:19,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-08 17:51:19,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:19,859 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)] === [2021-10-08 17:51:19,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:19,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1714575524, now seen corresponding path program 14 times [2021-10-08 17:51:19,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:19,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055320611] [2021-10-08 17:51:19,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:51:19,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:19,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:19,862 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:19,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:51:20,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:51:20,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:20,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:51:20,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:20,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:20,718 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:20,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055320611] [2021-10-08 17:51:20,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055320611] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:20,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:20,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16 [2021-10-08 17:51:20,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016194108] [2021-10-08 17:51:20,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:51:20,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:51:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:51:20,721 INFO L87 Difference]: Start difference. First operand 272 states and 841 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-10-08 17:51:22,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:22,353 INFO L93 Difference]: Finished difference Result 445 states and 1181 transitions. [2021-10-08 17:51:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 17:51:22,354 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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 [2021-10-08 17:51:22,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:22,358 INFO L225 Difference]: With dead ends: 445 [2021-10-08 17:51:22,358 INFO L226 Difference]: Without dead ends: 436 [2021-10-08 17:51:22,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1236.8ms TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2021-10-08 17:51:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-08 17:51:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 290. [2021-10-08 17:51:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.124567474048443) internal successors, (903), 289 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 903 transitions. [2021-10-08 17:51:22,376 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 903 transitions. Word has length 17 [2021-10-08 17:51:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:22,376 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 903 transitions. [2021-10-08 17:51:22,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-10-08 17:51:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 903 transitions. [2021-10-08 17:51:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:51:22,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:22,378 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:22,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-08 17:51:22,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:22,593 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)] === [2021-10-08 17:51:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:22,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1732688026, now seen corresponding path program 15 times [2021-10-08 17:51:22,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:22,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368869177] [2021-10-08 17:51:22,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:51:22,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:22,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:22,595 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:22,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:51:22,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:51:22,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:22,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:51:22,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:23,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:23,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:23,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368869177] [2021-10-08 17:51:23,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368869177] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:23,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:23,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 17:51:23,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072001608] [2021-10-08 17:51:23,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:51:23,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:23,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:51:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:51:23,426 INFO L87 Difference]: Start difference. First operand 290 states and 903 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 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) [2021-10-08 17:51:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:25,120 INFO L93 Difference]: Finished difference Result 712 states and 1987 transitions. [2021-10-08 17:51:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:51:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 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 17 [2021-10-08 17:51:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:25,127 INFO L225 Difference]: With dead ends: 712 [2021-10-08 17:51:25,127 INFO L226 Difference]: Without dead ends: 692 [2021-10-08 17:51:25,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1480.0ms TimeCoverageRelationStatistics Valid=425, Invalid=1215, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 17:51:25,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-10-08 17:51:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 306. [2021-10-08 17:51:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.1081967213114754) internal successors, (948), 305 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 948 transitions. [2021-10-08 17:51:25,147 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 948 transitions. Word has length 17 [2021-10-08 17:51:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:25,148 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 948 transitions. [2021-10-08 17:51:25,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 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) [2021-10-08 17:51:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 948 transitions. [2021-10-08 17:51:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:51:25,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:25,150 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:25,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-08 17:51:25,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:25,364 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)] === [2021-10-08 17:51:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1459723714, now seen corresponding path program 16 times [2021-10-08 17:51:25,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:25,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343254860] [2021-10-08 17:51:25,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:51:25,366 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:25,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:25,367 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:25,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 17:51:25,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:51:25,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:25,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:51:25,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:25,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:27,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:27,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343254860] [2021-10-08 17:51:27,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343254860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:27,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:27,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2021-10-08 17:51:27,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648702695] [2021-10-08 17:51:27,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:51:27,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:51:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:51:27,011 INFO L87 Difference]: Start difference. First operand 306 states and 948 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 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) [2021-10-08 17:51:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:29,320 INFO L93 Difference]: Finished difference Result 498 states and 1346 transitions. [2021-10-08 17:51:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:51:29,321 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 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 [2021-10-08 17:51:29,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:29,326 INFO L225 Difference]: With dead ends: 498 [2021-10-08 17:51:29,327 INFO L226 Difference]: Without dead ends: 480 [2021-10-08 17:51:29,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2220.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:51:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-10-08 17:51:29,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 298. [2021-10-08 17:51:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 3.0841750841750843) internal successors, (916), 297 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 916 transitions. [2021-10-08 17:51:29,341 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 916 transitions. Word has length 17 [2021-10-08 17:51:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:29,342 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 916 transitions. [2021-10-08 17:51:29,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 15 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) [2021-10-08 17:51:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 916 transitions. [2021-10-08 17:51:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:51:29,343 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:29,343 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:29,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:29,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:29,557 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)] === [2021-10-08 17:51:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:29,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1272102482, now seen corresponding path program 17 times [2021-10-08 17:51:29,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:29,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168901346] [2021-10-08 17:51:29,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:51:29,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:29,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:29,561 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:29,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 17:51:29,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:51:29,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:29,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:51:29,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:30,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:30,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:30,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168901346] [2021-10-08 17:51:30,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168901346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:30,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:30,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 17:51:30,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947322845] [2021-10-08 17:51:30,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:51:30,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:51:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:51:30,518 INFO L87 Difference]: Start difference. First operand 298 states and 916 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-08 17:51:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:31,795 INFO L93 Difference]: Finished difference Result 528 states and 1421 transitions. [2021-10-08 17:51:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:51:31,796 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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 [2021-10-08 17:51:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:31,801 INFO L225 Difference]: With dead ends: 528 [2021-10-08 17:51:31,801 INFO L226 Difference]: Without dead ends: 494 [2021-10-08 17:51:31,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 934.4ms TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:51:31,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-10-08 17:51:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 314. [2021-10-08 17:51:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 3.099041533546326) internal successors, (970), 313 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 970 transitions. [2021-10-08 17:51:31,817 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 970 transitions. Word has length 17 [2021-10-08 17:51:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:31,817 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 970 transitions. [2021-10-08 17:51:31,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 16 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) [2021-10-08 17:51:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 970 transitions. [2021-10-08 17:51:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:51:31,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:31,819 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:31,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:32,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:32,032 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)] === [2021-10-08 17:51:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:32,033 INFO L82 PathProgramCache]: Analyzing trace with hash 822449611, now seen corresponding path program 18 times [2021-10-08 17:51:32,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:32,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999211088] [2021-10-08 17:51:32,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:51:32,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:32,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:32,035 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:32,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 17:51:32,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:51:32,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:32,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:51:32,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:32,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:33,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:33,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999211088] [2021-10-08 17:51:33,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999211088] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:33,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:33,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 17:51:33,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465233016] [2021-10-08 17:51:33,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:51:33,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:33,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:51:33,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:51:33,512 INFO L87 Difference]: Start difference. First operand 314 states and 970 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:51:37,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:37,599 INFO L93 Difference]: Finished difference Result 414 states and 1246 transitions. [2021-10-08 17:51:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 17:51:37,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 18 [2021-10-08 17:51:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:37,604 INFO L225 Difference]: With dead ends: 414 [2021-10-08 17:51:37,604 INFO L226 Difference]: Without dead ends: 412 [2021-10-08 17:51:37,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3834.8ms TimeCoverageRelationStatistics Valid=403, Invalid=1079, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:51:37,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-08 17:51:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 356. [2021-10-08 17:51:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.174647887323944) internal successors, (1127), 355 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1127 transitions. [2021-10-08 17:51:37,627 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1127 transitions. Word has length 18 [2021-10-08 17:51:37,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:37,628 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1127 transitions. [2021-10-08 17:51:37,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:51:37,629 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1127 transitions. [2021-10-08 17:51:37,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:51:37,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:37,631 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:37,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:37,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:37,844 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)] === [2021-10-08 17:51:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1755363271, now seen corresponding path program 19 times [2021-10-08 17:51:37,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:37,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677778737] [2021-10-08 17:51:37,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:51:37,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:37,848 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:37,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 17:51:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:51:38,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:51:38,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:38,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:39,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:39,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677778737] [2021-10-08 17:51:39,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677778737] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:39,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:39,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:51:39,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114676926] [2021-10-08 17:51:39,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:51:39,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:39,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:51:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:51:39,877 INFO L87 Difference]: Start difference. First operand 356 states and 1127 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:46,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:46,122 INFO L93 Difference]: Finished difference Result 601 states and 1715 transitions. [2021-10-08 17:51:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:51:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:51:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:46,126 INFO L225 Difference]: With dead ends: 601 [2021-10-08 17:51:46,126 INFO L226 Difference]: Without dead ends: 592 [2021-10-08 17:51:46,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 5763.2ms TimeCoverageRelationStatistics Valid=534, Invalid=1272, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 17:51:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-08 17:51:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 414. [2021-10-08 17:51:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.2832929782082325) internal successors, (1356), 413 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:46,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1356 transitions. [2021-10-08 17:51:46,144 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1356 transitions. Word has length 18 [2021-10-08 17:51:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:46,144 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1356 transitions. [2021-10-08 17:51:46,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:46,145 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1356 transitions. [2021-10-08 17:51:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:51:46,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:46,147 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:46,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:46,361 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 [2021-10-08 17:51:46,361 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)] === [2021-10-08 17:51:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash -192222171, now seen corresponding path program 20 times [2021-10-08 17:51:46,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:46,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702949135] [2021-10-08 17:51:46,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:51:46,363 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:46,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:46,365 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) [2021-10-08 17:51:46,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 17:51:46,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:51:46,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:46,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:51:46,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:47,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:48,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:48,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702949135] [2021-10-08 17:51:48,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702949135] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:48,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:48,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:51:48,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975973121] [2021-10-08 17:51:48,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:51:48,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:51:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:51:48,124 INFO L87 Difference]: Start difference. First operand 414 states and 1356 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:54,182 INFO L93 Difference]: Finished difference Result 737 states and 2222 transitions. [2021-10-08 17:51:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:51:54,184 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:51:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:54,190 INFO L225 Difference]: With dead ends: 737 [2021-10-08 17:51:54,190 INFO L226 Difference]: Without dead ends: 720 [2021-10-08 17:51:54,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 5798.9ms TimeCoverageRelationStatistics Valid=478, Invalid=1328, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 17:51:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-10-08 17:51:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 510. [2021-10-08 17:51:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 3.406679764243615) internal successors, (1734), 509 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1734 transitions. [2021-10-08 17:51:54,212 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1734 transitions. Word has length 18 [2021-10-08 17:51:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:54,212 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1734 transitions. [2021-10-08 17:51:54,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1734 transitions. [2021-10-08 17:51:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:51:54,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:54,215 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:54,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:54,429 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 [2021-10-08 17:51:54,429 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)] === [2021-10-08 17:51:54,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:54,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1020511673, now seen corresponding path program 21 times [2021-10-08 17:51:54,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:54,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962553622] [2021-10-08 17:51:54,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:51:54,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:54,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:54,433 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) [2021-10-08 17:51:54,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 17:51:54,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:51:54,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:54,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:51:54,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:55,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:51:56,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:56,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962553622] [2021-10-08 17:51:56,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962553622] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:56,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:56,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:51:56,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172611936] [2021-10-08 17:51:56,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:51:56,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:51:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:51:56,618 INFO L87 Difference]: Start difference. First operand 510 states and 1734 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:05,703 INFO L93 Difference]: Finished difference Result 806 states and 2444 transitions. [2021-10-08 17:52:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:52:05,704 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:52:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:05,708 INFO L225 Difference]: With dead ends: 806 [2021-10-08 17:52:05,709 INFO L226 Difference]: Without dead ends: 788 [2021-10-08 17:52:05,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 7922.7ms TimeCoverageRelationStatistics Valid=667, Invalid=1589, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:52:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-10-08 17:52:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 560. [2021-10-08 17:52:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 3.4651162790697674) internal successors, (1937), 559 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1937 transitions. [2021-10-08 17:52:05,731 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1937 transitions. Word has length 18 [2021-10-08 17:52:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:05,732 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 1937 transitions. [2021-10-08 17:52:05,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1937 transitions. [2021-10-08 17:52:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:05,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:05,735 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:05,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:05,947 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 [2021-10-08 17:52:05,948 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)] === [2021-10-08 17:52:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:05,949 INFO L82 PathProgramCache]: Analyzing trace with hash -287022991, now seen corresponding path program 22 times [2021-10-08 17:52:05,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:05,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713728575] [2021-10-08 17:52:05,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:52:05,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:05,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:05,951 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) [2021-10-08 17:52:05,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 17:52:06,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:52:06,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:06,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:52:06,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:06,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:07,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:07,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713728575] [2021-10-08 17:52:07,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713728575] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:07,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:07,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2021-10-08 17:52:07,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280602820] [2021-10-08 17:52:07,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 17:52:07,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 17:52:07,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-08 17:52:07,504 INFO L87 Difference]: Start difference. First operand 560 states and 1937 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:10,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:10,886 INFO L93 Difference]: Finished difference Result 705 states and 2295 transitions. [2021-10-08 17:52:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:52:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:52:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:10,892 INFO L225 Difference]: With dead ends: 705 [2021-10-08 17:52:10,892 INFO L226 Difference]: Without dead ends: 694 [2021-10-08 17:52:10,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2324.9ms TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:52:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-08 17:52:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 598. [2021-10-08 17:52:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 3.5041876046901175) internal successors, (2092), 597 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 2092 transitions. [2021-10-08 17:52:10,913 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 2092 transitions. Word has length 18 [2021-10-08 17:52:10,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:10,913 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 2092 transitions. [2021-10-08 17:52:10,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 2092 transitions. [2021-10-08 17:52:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:10,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:10,916 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:10,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:11,128 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 [2021-10-08 17:52:11,129 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)] === [2021-10-08 17:52:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:11,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1530569529, now seen corresponding path program 23 times [2021-10-08 17:52:11,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:11,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833436797] [2021-10-08 17:52:11,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:52:11,131 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:11,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:11,133 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) [2021-10-08 17:52:11,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 17:52:11,438 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:52:11,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:11,440 WARN L261 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:52:11,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:11,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:12,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:12,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833436797] [2021-10-08 17:52:12,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833436797] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:12,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:12,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-08 17:52:12,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558824069] [2021-10-08 17:52:12,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:52:12,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:52:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:52:12,464 INFO L87 Difference]: Start difference. First operand 598 states and 2092 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) [2021-10-08 17:52:14,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:14,213 INFO L93 Difference]: Finished difference Result 716 states and 2398 transitions. [2021-10-08 17:52:14,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:52:14,214 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 [2021-10-08 17:52:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:14,221 INFO L225 Difference]: With dead ends: 716 [2021-10-08 17:52:14,221 INFO L226 Difference]: Without dead ends: 710 [2021-10-08 17:52:14,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1502.2ms TimeCoverageRelationStatistics Valid=232, Invalid=418, Unknown=0, NotChecked=0, Total=650 [2021-10-08 17:52:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-10-08 17:52:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 634. [2021-10-08 17:52:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.5039494470774093) internal successors, (2218), 633 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2218 transitions. [2021-10-08 17:52:14,249 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2218 transitions. Word has length 18 [2021-10-08 17:52:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:14,249 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 2218 transitions. [2021-10-08 17:52:14,249 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) [2021-10-08 17:52:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2218 transitions. [2021-10-08 17:52:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:14,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:14,254 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:14,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:14,467 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 [2021-10-08 17:52:14,468 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)] === [2021-10-08 17:52:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash 186584885, now seen corresponding path program 24 times [2021-10-08 17:52:14,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:14,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464326386] [2021-10-08 17:52:14,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:52:14,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:14,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:14,471 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) [2021-10-08 17:52:14,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 17:52:14,859 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:52:14,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:14,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:52:14,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:15,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:15,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:15,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464326386] [2021-10-08 17:52:15,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464326386] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:15,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:15,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 17:52:15,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485267555] [2021-10-08 17:52:15,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:52:15,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:52:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:52:15,886 INFO L87 Difference]: Start difference. First operand 634 states and 2218 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:52:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:20,036 INFO L93 Difference]: Finished difference Result 822 states and 2654 transitions. [2021-10-08 17:52:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:52:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 18 [2021-10-08 17:52:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:20,043 INFO L225 Difference]: With dead ends: 822 [2021-10-08 17:52:20,043 INFO L226 Difference]: Without dead ends: 812 [2021-10-08 17:52:20,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3769.0ms TimeCoverageRelationStatistics Valid=408, Invalid=1232, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 17:52:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-08 17:52:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 664. [2021-10-08 17:52:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 3.497737556561086) internal successors, (2319), 663 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2319 transitions. [2021-10-08 17:52:20,068 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2319 transitions. Word has length 18 [2021-10-08 17:52:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:20,068 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 2319 transitions. [2021-10-08 17:52:20,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:52:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2319 transitions. [2021-10-08 17:52:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:20,072 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:20,072 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:20,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:20,285 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 [2021-10-08 17:52:20,285 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)] === [2021-10-08 17:52:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:20,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1805137245, now seen corresponding path program 25 times [2021-10-08 17:52:20,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:20,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756691347] [2021-10-08 17:52:20,287 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:52:20,288 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:20,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:20,289 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) [2021-10-08 17:52:20,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 17:52:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:52:20,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:52:20,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:21,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:21,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:21,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756691347] [2021-10-08 17:52:21,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756691347] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:21,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:21,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:52:21,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64712359] [2021-10-08 17:52:21,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:52:21,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:52:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:52:21,858 INFO L87 Difference]: Start difference. First operand 664 states and 2319 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:26,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:26,179 INFO L93 Difference]: Finished difference Result 864 states and 2766 transitions. [2021-10-08 17:52:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:52:26,181 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:52:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:26,187 INFO L225 Difference]: With dead ends: 864 [2021-10-08 17:52:26,187 INFO L226 Difference]: Without dead ends: 852 [2021-10-08 17:52:26,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 4017.8ms TimeCoverageRelationStatistics Valid=430, Invalid=1130, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:52:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-10-08 17:52:26,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 690. [2021-10-08 17:52:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 3.5036284470246732) internal successors, (2414), 689 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2414 transitions. [2021-10-08 17:52:26,214 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2414 transitions. Word has length 18 [2021-10-08 17:52:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:26,214 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 2414 transitions. [2021-10-08 17:52:26,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2414 transitions. [2021-10-08 17:52:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:26,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:26,218 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:26,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-08 17:52:26,431 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 [2021-10-08 17:52:26,431 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)] === [2021-10-08 17:52:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1332507467, now seen corresponding path program 26 times [2021-10-08 17:52:26,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:26,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148182523] [2021-10-08 17:52:26,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:52:26,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:26,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:26,434 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) [2021-10-08 17:52:26,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 17:52:26,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:52:26,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:26,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:52:26,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:27,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:28,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:28,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148182523] [2021-10-08 17:52:28,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148182523] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:28,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:28,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:52:28,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248627653] [2021-10-08 17:52:28,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:52:28,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:52:28,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:52:28,830 INFO L87 Difference]: Start difference. First operand 690 states and 2414 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:36,398 INFO L93 Difference]: Finished difference Result 980 states and 3094 transitions. [2021-10-08 17:52:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:52:36,399 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:52:36,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:36,405 INFO L225 Difference]: With dead ends: 980 [2021-10-08 17:52:36,405 INFO L226 Difference]: Without dead ends: 960 [2021-10-08 17:52:36,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 7000.5ms TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 17:52:36,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-10-08 17:52:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 710. [2021-10-08 17:52:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.5148095909732016) internal successors, (2492), 709 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2492 transitions. [2021-10-08 17:52:36,432 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2492 transitions. Word has length 18 [2021-10-08 17:52:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:36,433 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2492 transitions. [2021-10-08 17:52:36,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2492 transitions. [2021-10-08 17:52:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:36,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:36,445 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:36,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:36,658 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 [2021-10-08 17:52:36,659 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)] === [2021-10-08 17:52:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:36,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1304324291, now seen corresponding path program 27 times [2021-10-08 17:52:36,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:36,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704571363] [2021-10-08 17:52:36,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:52:36,661 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:36,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:36,663 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) [2021-10-08 17:52:36,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 17:52:37,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:52:37,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:37,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:52:37,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:37,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:37,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:37,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704571363] [2021-10-08 17:52:37,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704571363] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:37,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:37,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 17:52:37,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434492136] [2021-10-08 17:52:37,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:52:37,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:52:37,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:52:37,990 INFO L87 Difference]: Start difference. First operand 710 states and 2492 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:52:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:40,091 INFO L93 Difference]: Finished difference Result 748 states and 2595 transitions. [2021-10-08 17:52:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:52:40,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 18 [2021-10-08 17:52:40,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:40,098 INFO L225 Difference]: With dead ends: 748 [2021-10-08 17:52:40,098 INFO L226 Difference]: Without dead ends: 746 [2021-10-08 17:52:40,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 2016.3ms TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 17:52:40,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-10-08 17:52:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 720. [2021-10-08 17:52:40,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 3.5173852573018083) internal successors, (2529), 719 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2529 transitions. [2021-10-08 17:52:40,133 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2529 transitions. Word has length 18 [2021-10-08 17:52:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:40,134 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 2529 transitions. [2021-10-08 17:52:40,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:52:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2529 transitions. [2021-10-08 17:52:40,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:40,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:40,137 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:40,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:40,351 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 [2021-10-08 17:52:40,352 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)] === [2021-10-08 17:52:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:40,353 INFO L82 PathProgramCache]: Analyzing trace with hash 412830123, now seen corresponding path program 28 times [2021-10-08 17:52:40,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:40,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931373649] [2021-10-08 17:52:40,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:52:40,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:40,358 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) [2021-10-08 17:52:40,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 17:52:40,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:52:40,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:40,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:52:40,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:41,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:42,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:42,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931373649] [2021-10-08 17:52:42,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931373649] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:42,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:42,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:52:42,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575583862] [2021-10-08 17:52:42,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:52:42,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:52:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:52:42,182 INFO L87 Difference]: Start difference. First operand 720 states and 2529 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:46,987 INFO L93 Difference]: Finished difference Result 1035 states and 3348 transitions. [2021-10-08 17:52:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 17:52:46,988 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:52:46,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:46,994 INFO L225 Difference]: With dead ends: 1035 [2021-10-08 17:52:46,995 INFO L226 Difference]: Without dead ends: 1024 [2021-10-08 17:52:46,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 4346.6ms TimeCoverageRelationStatistics Valid=610, Invalid=1552, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:52:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-10-08 17:52:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 732. [2021-10-08 17:52:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 3.511627906976744) internal successors, (2567), 731 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 2567 transitions. [2021-10-08 17:52:47,021 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 2567 transitions. Word has length 18 [2021-10-08 17:52:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:47,021 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 2567 transitions. [2021-10-08 17:52:47,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:47,022 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 2567 transitions. [2021-10-08 17:52:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:47,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:47,025 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:47,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:47,238 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 [2021-10-08 17:52:47,238 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)] === [2021-10-08 17:52:47,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:47,239 INFO L82 PathProgramCache]: Analyzing trace with hash -549998275, now seen corresponding path program 29 times [2021-10-08 17:52:47,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:47,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120196183] [2021-10-08 17:52:47,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:52:47,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:47,242 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) [2021-10-08 17:52:47,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 17:52:47,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:52:47,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:47,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:52:47,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:48,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:49,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:49,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120196183] [2021-10-08 17:52:49,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120196183] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:49,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:49,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:52:49,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132757887] [2021-10-08 17:52:49,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:52:49,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:49,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:52:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:52:49,320 INFO L87 Difference]: Start difference. First operand 732 states and 2567 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:54,297 INFO L93 Difference]: Finished difference Result 1082 states and 3410 transitions. [2021-10-08 17:52:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:52:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:52:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:54,306 INFO L225 Difference]: With dead ends: 1082 [2021-10-08 17:52:54,306 INFO L226 Difference]: Without dead ends: 1060 [2021-10-08 17:52:54,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 4550.3ms TimeCoverageRelationStatistics Valid=490, Invalid=1232, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 17:52:54,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-08 17:52:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 738. [2021-10-08 17:52:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 3.5169606512890095) internal successors, (2592), 737 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 2592 transitions. [2021-10-08 17:52:54,331 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 2592 transitions. Word has length 18 [2021-10-08 17:52:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:54,332 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 2592 transitions. [2021-10-08 17:52:54,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 2592 transitions. [2021-10-08 17:52:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:54,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:54,335 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:54,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 17:52:54,551 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 [2021-10-08 17:52:54,551 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)] === [2021-10-08 17:52:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:54,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1425925671, now seen corresponding path program 30 times [2021-10-08 17:52:54,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:54,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722316034] [2021-10-08 17:52:54,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:52:54,553 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:54,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:54,554 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) [2021-10-08 17:52:54,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 17:52:55,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:52:55,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:55,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:52:55,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:55,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:52:55,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:55,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722316034] [2021-10-08 17:52:55,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722316034] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:55,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:55,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 17 [2021-10-08 17:52:55,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773108625] [2021-10-08 17:52:55,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:52:55,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:55,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:52:55,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:52:55,558 INFO L87 Difference]: Start difference. First operand 738 states and 2592 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:56,831 INFO L93 Difference]: Finished difference Result 1063 states and 3478 transitions. [2021-10-08 17:52:56,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:52:56,832 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:52:56,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:56,840 INFO L225 Difference]: With dead ends: 1063 [2021-10-08 17:52:56,840 INFO L226 Difference]: Without dead ends: 1048 [2021-10-08 17:52:56,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 966.4ms TimeCoverageRelationStatistics Valid=307, Invalid=1025, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 17:52:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-10-08 17:52:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 752. [2021-10-08 17:52:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 3.5059920106524634) internal successors, (2633), 751 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2633 transitions. [2021-10-08 17:52:56,868 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2633 transitions. Word has length 18 [2021-10-08 17:52:56,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:56,869 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 2633 transitions. [2021-10-08 17:52:56,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:56,869 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2633 transitions. [2021-10-08 17:52:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:52:56,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:56,872 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:56,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:57,086 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 [2021-10-08 17:52:57,087 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)] === [2021-10-08 17:52:57,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:57,088 INFO L82 PathProgramCache]: Analyzing trace with hash 577142875, now seen corresponding path program 31 times [2021-10-08 17:52:57,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:57,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296800930] [2021-10-08 17:52:57,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:52:57,089 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:57,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:57,091 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) [2021-10-08 17:52:57,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 17:52:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:52:57,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:52:57,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:58,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:59,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:59,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296800930] [2021-10-08 17:52:59,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296800930] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:59,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:59,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:52:59,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607800380] [2021-10-08 17:52:59,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:52:59,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:59,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:52:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:52:59,192 INFO L87 Difference]: Start difference. First operand 752 states and 2633 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:04,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:53:04,171 INFO L93 Difference]: Finished difference Result 953 states and 3136 transitions. [2021-10-08 17:53:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:53:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:53:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:53:04,179 INFO L225 Difference]: With dead ends: 953 [2021-10-08 17:53:04,179 INFO L226 Difference]: Without dead ends: 946 [2021-10-08 17:53:04,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4725.2ms TimeCoverageRelationStatistics Valid=383, Invalid=1023, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 17:53:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2021-10-08 17:53:04,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 808. [2021-10-08 17:53:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 3.5278810408921935) internal successors, (2847), 807 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2847 transitions. [2021-10-08 17:53:04,202 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2847 transitions. Word has length 18 [2021-10-08 17:53:04,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:53:04,202 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2847 transitions. [2021-10-08 17:53:04,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2847 transitions. [2021-10-08 17:53:04,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:53:04,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:53:04,206 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:53:04,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 17:53:04,410 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 [2021-10-08 17:53:04,411 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)] === [2021-10-08 17:53:04,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:53:04,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2000670007, now seen corresponding path program 32 times [2021-10-08 17:53:04,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:53:04,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613453449] [2021-10-08 17:53:04,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:53:04,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:53:04,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:53:04,414 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) [2021-10-08 17:53:04,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 17:53:04,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:53:04,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:53:04,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:53:04,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:53:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:05,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:53:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:06,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:53:06,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613453449] [2021-10-08 17:53:06,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613453449] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:53:06,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:53:06,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 17:53:06,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808225008] [2021-10-08 17:53:06,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:53:06,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:53:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:53:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:53:06,032 INFO L87 Difference]: Start difference. First operand 808 states and 2847 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:53:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:53:13,449 INFO L93 Difference]: Finished difference Result 1128 states and 3629 transitions. [2021-10-08 17:53:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:53:13,450 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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 18 [2021-10-08 17:53:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:53:13,454 INFO L225 Difference]: With dead ends: 1128 [2021-10-08 17:53:13,455 INFO L226 Difference]: Without dead ends: 1122 [2021-10-08 17:53:13,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 6680.0ms TimeCoverageRelationStatistics Valid=619, Invalid=1931, Unknown=0, NotChecked=0, Total=2550 [2021-10-08 17:53:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2021-10-08 17:53:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 836. [2021-10-08 17:53:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.5365269461077844) internal successors, (2953), 835 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2953 transitions. [2021-10-08 17:53:13,475 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2953 transitions. Word has length 18 [2021-10-08 17:53:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:53:13,475 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2953 transitions. [2021-10-08 17:53:13,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 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) [2021-10-08 17:53:13,475 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2953 transitions. [2021-10-08 17:53:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:53:13,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:53:13,478 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:53:13,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 17:53:13,678 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 [2021-10-08 17:53:13,679 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)] === [2021-10-08 17:53:13,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:53:13,680 INFO L82 PathProgramCache]: Analyzing trace with hash -437528907, now seen corresponding path program 33 times [2021-10-08 17:53:13,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:53:13,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014499115] [2021-10-08 17:53:13,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:53:13,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:53:13,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:53:13,684 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) [2021-10-08 17:53:13,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 17:53:14,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:53:14,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:53:14,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:53:14,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:53:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:14,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:53:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:15,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:53:15,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014499115] [2021-10-08 17:53:15,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014499115] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:53:15,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:53:15,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:53:15,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125250993] [2021-10-08 17:53:15,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:53:15,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:53:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:53:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:53:15,673 INFO L87 Difference]: Start difference. First operand 836 states and 2953 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:53:23,256 INFO L93 Difference]: Finished difference Result 1229 states and 3967 transitions. [2021-10-08 17:53:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:53:23,257 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:53:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:53:23,261 INFO L225 Difference]: With dead ends: 1229 [2021-10-08 17:53:23,261 INFO L226 Difference]: Without dead ends: 1210 [2021-10-08 17:53:23,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 7096.6ms TimeCoverageRelationStatistics Valid=660, Invalid=2096, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:53:23,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-08 17:53:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 864. [2021-10-08 17:53:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.5469293163383546) internal successors, (3061), 863 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3061 transitions. [2021-10-08 17:53:23,283 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3061 transitions. Word has length 18 [2021-10-08 17:53:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:53:23,283 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3061 transitions. [2021-10-08 17:53:23,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3061 transitions. [2021-10-08 17:53:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:53:23,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:53:23,286 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:53:23,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 17:53:23,486 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 [2021-10-08 17:53:23,487 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)] === [2021-10-08 17:53:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:53:23,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1605205242, now seen corresponding path program 34 times [2021-10-08 17:53:23,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:53:23,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868094858] [2021-10-08 17:53:23,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:53:23,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:53:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:53:23,490 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) [2021-10-08 17:53:23,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 17:53:23,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:53:23,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:53:23,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:53:23,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:53:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:53:24,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:53:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:25,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:53:25,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868094858] [2021-10-08 17:53:25,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868094858] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:53:25,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:53:25,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-10-08 17:53:25,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873435642] [2021-10-08 17:53:25,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:53:25,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:53:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:53:25,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:53:25,635 INFO L87 Difference]: Start difference. First operand 864 states and 3061 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-10-08 17:53:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:53:31,647 INFO L93 Difference]: Finished difference Result 1160 states and 3898 transitions. [2021-10-08 17:53:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:53:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 19 [2021-10-08 17:53:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:53:31,652 INFO L225 Difference]: With dead ends: 1160 [2021-10-08 17:53:31,653 INFO L226 Difference]: Without dead ends: 1160 [2021-10-08 17:53:31,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 5545.5ms TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 17:53:31,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-10-08 17:53:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 946. [2021-10-08 17:53:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.585185185185185) internal successors, (3388), 945 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3388 transitions. [2021-10-08 17:53:31,677 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3388 transitions. Word has length 19 [2021-10-08 17:53:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:53:31,677 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 3388 transitions. [2021-10-08 17:53:31,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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) [2021-10-08 17:53:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3388 transitions. [2021-10-08 17:53:31,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:53:31,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:53:31,680 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:53:31,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-08 17:53:31,880 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 [2021-10-08 17:53:31,880 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)] === [2021-10-08 17:53:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:53:31,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1977152880, now seen corresponding path program 35 times [2021-10-08 17:53:31,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:53:31,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065356458] [2021-10-08 17:53:31,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:53:31,882 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:53:31,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:53:31,884 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) [2021-10-08 17:53:31,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 17:53:32,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:53:32,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:53:32,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:53:32,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:53:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:32,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:53:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:33,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:53:33,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065356458] [2021-10-08 17:53:33,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065356458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:53:33,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:53:33,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2021-10-08 17:53:33,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189846042] [2021-10-08 17:53:33,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:53:33,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:53:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:53:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:53:33,936 INFO L87 Difference]: Start difference. First operand 946 states and 3388 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-08 17:53:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:53:41,800 INFO L93 Difference]: Finished difference Result 1330 states and 4381 transitions. [2021-10-08 17:53:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:53:41,802 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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 19 [2021-10-08 17:53:41,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:53:41,805 INFO L225 Difference]: With dead ends: 1330 [2021-10-08 17:53:41,806 INFO L226 Difference]: Without dead ends: 1330 [2021-10-08 17:53:41,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 6343.0ms TimeCoverageRelationStatistics Valid=487, Invalid=1153, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 17:53:41,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-08 17:53:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1034. [2021-10-08 17:53:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 3.622458857696031) internal successors, (3742), 1033 states have internal predecessors, (3742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:53:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 3742 transitions. [2021-10-08 17:53:41,844 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 3742 transitions. Word has length 19 [2021-10-08 17:53:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:53:41,844 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 3742 transitions. [2021-10-08 17:53:41,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 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) [2021-10-08 17:53:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 3742 transitions. [2021-10-08 17:53:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:53:41,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:53:41,849 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:53:41,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 17:53:42,066 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 [2021-10-08 17:53:42,067 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)] === [2021-10-08 17:53:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:53:42,068 INFO L82 PathProgramCache]: Analyzing trace with hash -23563782, now seen corresponding path program 36 times [2021-10-08 17:53:42,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:53:42,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88215063] [2021-10-08 17:53:42,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:53:42,069 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:53:42,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:53:42,071 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) [2021-10-08 17:53:42,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 17:53:42,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 17:53:42,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:53:42,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:53:42,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:53:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:43,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:53:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:53:46,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:53:46,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88215063] [2021-10-08 17:53:46,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88215063] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:53:46,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:53:46,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-08 17:53:46,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65150537] [2021-10-08 17:53:46,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:53:46,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:53:46,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:53:46,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:53:46,384 INFO L87 Difference]: Start difference. First operand 1034 states and 3742 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:54:45,230 INFO L93 Difference]: Finished difference Result 1461 states and 4718 transitions. [2021-10-08 17:54:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 17:54:45,232 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 [2021-10-08 17:54:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:54:45,235 INFO L225 Difference]: With dead ends: 1461 [2021-10-08 17:54:45,236 INFO L226 Difference]: Without dead ends: 1446 [2021-10-08 17:54:45,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 57265.8ms TimeCoverageRelationStatistics Valid=1182, Invalid=3374, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 17:54:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-08 17:54:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1098. [2021-10-08 17:54:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 3.6298997265268915) internal successors, (3982), 1097 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 3982 transitions. [2021-10-08 17:54:45,269 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 3982 transitions. Word has length 19 [2021-10-08 17:54:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:54:45,269 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 3982 transitions. [2021-10-08 17:54:45,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:54:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 3982 transitions. [2021-10-08 17:54:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:54:45,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:54:45,274 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:54:45,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 17:54:45,480 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 [2021-10-08 17:54:45,481 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)] === [2021-10-08 17:54:45,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:54:45,481 INFO L82 PathProgramCache]: Analyzing trace with hash -68848500, now seen corresponding path program 37 times [2021-10-08 17:54:45,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:54:45,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176850475] [2021-10-08 17:54:45,482 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:54:45,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:54:45,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:54:45,484 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) [2021-10-08 17:54:45,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 17:54:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:54:46,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 17:54:46,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:54:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:54:46,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:54:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:54:51,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:54:51,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176850475] [2021-10-08 17:54:51,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176850475] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:54:51,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:54:51,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2021-10-08 17:54:51,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544321250] [2021-10-08 17:54:51,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:54:51,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:54:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:54:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:54:51,597 INFO L87 Difference]: Start difference. First operand 1098 states and 3982 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:18,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:55:18,268 INFO L93 Difference]: Finished difference Result 1329 states and 4513 transitions. [2021-10-08 17:55:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 17:55:18,269 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 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 [2021-10-08 17:55:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:55:18,274 INFO L225 Difference]: With dead ends: 1329 [2021-10-08 17:55:18,275 INFO L226 Difference]: Without dead ends: 1320 [2021-10-08 17:55:18,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 27050.3ms TimeCoverageRelationStatistics Valid=561, Invalid=1601, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:55:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-10-08 17:55:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1114. [2021-10-08 17:55:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.6442048517520216) internal successors, (4056), 1113 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4056 transitions. [2021-10-08 17:55:18,313 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4056 transitions. Word has length 19 [2021-10-08 17:55:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:55:18,314 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 4056 transitions. [2021-10-08 17:55:18,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4056 transitions. [2021-10-08 17:55:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:55:18,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:55:18,318 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:55:18,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 17:55:18,531 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 [2021-10-08 17:55:18,532 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)] === [2021-10-08 17:55:18,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:55:18,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1703717174, now seen corresponding path program 38 times [2021-10-08 17:55:18,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:55:18,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521556543] [2021-10-08 17:55:18,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:55:18,534 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:55:18,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:55:18,535 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) [2021-10-08 17:55:18,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 17:55:19,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:55:19,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:55:19,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:55:19,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:55:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:19,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:55:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:21,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:55:21,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521556543] [2021-10-08 17:55:21,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521556543] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:55:21,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:55:21,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 17:55:21,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369299818] [2021-10-08 17:55:21,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:55:21,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:55:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:55:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:55:21,502 INFO L87 Difference]: Start difference. First operand 1114 states and 4056 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:37,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:55:37,789 INFO L93 Difference]: Finished difference Result 1460 states and 4830 transitions. [2021-10-08 17:55:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 17:55:37,790 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 17:55:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:55:37,797 INFO L225 Difference]: With dead ends: 1460 [2021-10-08 17:55:37,797 INFO L226 Difference]: Without dead ends: 1452 [2021-10-08 17:55:37,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 15215.8ms TimeCoverageRelationStatistics Valid=925, Invalid=2381, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:55:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2021-10-08 17:55:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1142. [2021-10-08 17:55:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.633654688869413) internal successors, (4146), 1141 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:37,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4146 transitions. [2021-10-08 17:55:37,837 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4146 transitions. Word has length 19 [2021-10-08 17:55:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:55:37,837 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 4146 transitions. [2021-10-08 17:55:37,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4146 transitions. [2021-10-08 17:55:37,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:55:37,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:55:37,842 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:55:37,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 17:55:38,055 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 [2021-10-08 17:55:38,055 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)] === [2021-10-08 17:55:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:55:38,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1432238368, now seen corresponding path program 39 times [2021-10-08 17:55:38,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:55:38,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582640547] [2021-10-08 17:55:38,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:55:38,057 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:55:38,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:55:38,059 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) [2021-10-08 17:55:38,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 17:55:38,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-08 17:55:38,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:55:38,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:55:38,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:55:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:55:39,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:55:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:41,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:55:41,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582640547] [2021-10-08 17:55:41,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582640547] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:55:41,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:55:41,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2021-10-08 17:55:41,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115930847] [2021-10-08 17:55:41,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:55:41,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:55:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:55:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:55:41,400 INFO L87 Difference]: Start difference. First operand 1142 states and 4146 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:55:53,942 INFO L93 Difference]: Finished difference Result 1325 states and 4534 transitions. [2021-10-08 17:55:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 17:55:53,943 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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 [2021-10-08 17:55:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:55:53,950 INFO L225 Difference]: With dead ends: 1325 [2021-10-08 17:55:53,950 INFO L226 Difference]: Without dead ends: 1320 [2021-10-08 17:55:53,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 10173.5ms TimeCoverageRelationStatistics Valid=613, Invalid=1549, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:55:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-10-08 17:55:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1162. [2021-10-08 17:55:53,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.6382428940568476) internal successors, (4224), 1161 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 4224 transitions. [2021-10-08 17:55:53,989 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 4224 transitions. Word has length 19 [2021-10-08 17:55:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:55:53,989 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 4224 transitions. [2021-10-08 17:55:53,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:53,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 4224 transitions. [2021-10-08 17:55:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:55:53,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:55:53,994 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:55:54,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 17:55:54,209 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 [2021-10-08 17:55:54,209 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)] === [2021-10-08 17:55:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:55:54,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1955625568, now seen corresponding path program 40 times [2021-10-08 17:55:54,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:55:54,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267694187] [2021-10-08 17:55:54,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:55:54,211 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:55:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:55:54,212 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) [2021-10-08 17:55:54,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 17:55:54,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:55:54,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:55:54,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:55:54,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:55:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:55,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:55:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:55:55,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:55:55,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267694187] [2021-10-08 17:55:55,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267694187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:55:55,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:55:55,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-08 17:55:55,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951267630] [2021-10-08 17:55:55,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:55:55,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:55:55,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:55:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:55:55,898 INFO L87 Difference]: Start difference. First operand 1162 states and 4224 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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) [2021-10-08 17:55:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:55:58,988 INFO L93 Difference]: Finished difference Result 1566 states and 5407 transitions. [2021-10-08 17:55:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:55:58,988 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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 19 [2021-10-08 17:55:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:55:59,004 INFO L225 Difference]: With dead ends: 1566 [2021-10-08 17:55:59,005 INFO L226 Difference]: Without dead ends: 1531 [2021-10-08 17:55:59,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 507.4ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-08 17:55:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2021-10-08 17:55:59,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1250. [2021-10-08 17:55:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.625300240192154) internal successors, (4528), 1249 states have internal predecessors, (4528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:55:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4528 transitions. [2021-10-08 17:55:59,037 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4528 transitions. Word has length 19 [2021-10-08 17:55:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:55:59,038 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 4528 transitions. [2021-10-08 17:55:59,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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) [2021-10-08 17:55:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4528 transitions. [2021-10-08 17:55:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:55:59,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:55:59,043 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:55:59,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 17:55:59,256 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 [2021-10-08 17:55:59,257 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)] === [2021-10-08 17:55:59,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:55:59,258 INFO L82 PathProgramCache]: Analyzing trace with hash 809345228, now seen corresponding path program 41 times [2021-10-08 17:55:59,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:55:59,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452085007] [2021-10-08 17:55:59,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:55:59,259 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:55:59,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:55:59,261 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) [2021-10-08 17:55:59,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 17:55:59,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:55:59,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:55:59,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:55:59,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:56:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:00,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:56:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:02,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:56:02,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452085007] [2021-10-08 17:56:02,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452085007] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:56:02,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:56:02,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2021-10-08 17:56:02,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293748913] [2021-10-08 17:56:02,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:56:02,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:56:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:56:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:56:02,227 INFO L87 Difference]: Start difference. First operand 1250 states and 4528 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:56:12,140 INFO L93 Difference]: Finished difference Result 1588 states and 5343 transitions. [2021-10-08 17:56:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:56:12,142 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 [2021-10-08 17:56:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:56:12,146 INFO L225 Difference]: With dead ends: 1588 [2021-10-08 17:56:12,146 INFO L226 Difference]: Without dead ends: 1554 [2021-10-08 17:56:12,147 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 8357.6ms TimeCoverageRelationStatistics Valid=538, Invalid=1184, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 17:56:12,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-10-08 17:56:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1298. [2021-10-08 17:56:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.6268311488049343) internal successors, (4704), 1297 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4704 transitions. [2021-10-08 17:56:12,175 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 4704 transitions. Word has length 19 [2021-10-08 17:56:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:56:12,175 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 4704 transitions. [2021-10-08 17:56:12,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 4704 transitions. [2021-10-08 17:56:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:56:12,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:56:12,178 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:56:12,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 17:56:12,379 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 [2021-10-08 17:56:12,379 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)] === [2021-10-08 17:56:12,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:56:12,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2022079072, now seen corresponding path program 42 times [2021-10-08 17:56:12,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:56:12,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94143519] [2021-10-08 17:56:12,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:56:12,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:56:12,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:56:12,383 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) [2021-10-08 17:56:12,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 17:56:13,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:56:13,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:56:13,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:56:13,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:56:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:13,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:56:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:14,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:56:14,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94143519] [2021-10-08 17:56:14,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94143519] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:56:14,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:56:14,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 17:56:14,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921483795] [2021-10-08 17:56:14,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:56:14,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:56:14,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:56:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:56:14,500 INFO L87 Difference]: Start difference. First operand 1298 states and 4704 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:56:25,394 INFO L93 Difference]: Finished difference Result 1619 states and 5443 transitions. [2021-10-08 17:56:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 17:56:25,396 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 [2021-10-08 17:56:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:56:25,400 INFO L225 Difference]: With dead ends: 1619 [2021-10-08 17:56:25,400 INFO L226 Difference]: Without dead ends: 1614 [2021-10-08 17:56:25,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 8890.7ms TimeCoverageRelationStatistics Valid=756, Invalid=2436, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:56:25,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-10-08 17:56:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1370. [2021-10-08 17:56:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.643535427319211) internal successors, (4988), 1369 states have internal predecessors, (4988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 4988 transitions. [2021-10-08 17:56:25,429 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 4988 transitions. Word has length 19 [2021-10-08 17:56:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:56:25,430 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 4988 transitions. [2021-10-08 17:56:25,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:56:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 4988 transitions. [2021-10-08 17:56:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:56:25,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:56:25,434 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:56:25,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 17:56:25,634 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 [2021-10-08 17:56:25,635 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)] === [2021-10-08 17:56:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:56:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash 47286910, now seen corresponding path program 43 times [2021-10-08 17:56:25,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:56:25,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950209618] [2021-10-08 17:56:25,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:56:25,637 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:56:25,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:56:25,638 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) [2021-10-08 17:56:25,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 17:56:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:56:26,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:56:26,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:56:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:27,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:56:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:56:29,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:56:29,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950209618] [2021-10-08 17:56:29,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950209618] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:56:29,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:56:29,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2021-10-08 17:56:29,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575699479] [2021-10-08 17:56:29,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:56:29,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:56:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:56:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:56:29,648 INFO L87 Difference]: Start difference. First operand 1370 states and 4988 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:03,390 INFO L93 Difference]: Finished difference Result 1841 states and 6166 transitions. [2021-10-08 17:57:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 17:57:03,392 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 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 [2021-10-08 17:57:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:03,398 INFO L225 Difference]: With dead ends: 1841 [2021-10-08 17:57:03,398 INFO L226 Difference]: Without dead ends: 1828 [2021-10-08 17:57:03,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 32698.7ms TimeCoverageRelationStatistics Valid=1002, Invalid=3288, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:57:03,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-10-08 17:57:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1396. [2021-10-08 17:57:03,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 3.65089605734767) internal successors, (5093), 1395 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5093 transitions. [2021-10-08 17:57:03,434 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5093 transitions. Word has length 19 [2021-10-08 17:57:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:03,435 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 5093 transitions. [2021-10-08 17:57:03,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5093 transitions. [2021-10-08 17:57:03,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:57:03,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:03,439 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:03,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:03,639 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 [2021-10-08 17:57:03,640 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)] === [2021-10-08 17:57:03,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:03,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1774567866, now seen corresponding path program 44 times [2021-10-08 17:57:03,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:03,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380927103] [2021-10-08 17:57:03,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:57:03,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:03,643 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) [2021-10-08 17:57:03,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 17:57:04,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:57:04,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:57:04,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:57:04,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:05,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:06,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:06,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380927103] [2021-10-08 17:57:06,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380927103] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:57:06,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:57:06,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 17:57:06,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62068740] [2021-10-08 17:57:06,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:57:06,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:57:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:57:06,494 INFO L87 Difference]: Start difference. First operand 1396 states and 5093 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:20,541 INFO L93 Difference]: Finished difference Result 1732 states and 5848 transitions. [2021-10-08 17:57:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 17:57:20,542 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 17:57:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:20,547 INFO L225 Difference]: With dead ends: 1732 [2021-10-08 17:57:20,547 INFO L226 Difference]: Without dead ends: 1724 [2021-10-08 17:57:20,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 13183.9ms TimeCoverageRelationStatistics Valid=957, Invalid=2465, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:57:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-10-08 17:57:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1412. [2021-10-08 17:57:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.6392629340892984) internal successors, (5135), 1411 states have internal predecessors, (5135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5135 transitions. [2021-10-08 17:57:20,580 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5135 transitions. Word has length 19 [2021-10-08 17:57:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:20,581 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5135 transitions. [2021-10-08 17:57:20,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5135 transitions. [2021-10-08 17:57:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:57:20,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:20,585 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:20,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:20,785 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 [2021-10-08 17:57:20,786 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)] === [2021-10-08 17:57:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1503089060, now seen corresponding path program 45 times [2021-10-08 17:57:20,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:20,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155649979] [2021-10-08 17:57:20,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:57:20,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:20,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:20,789 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) [2021-10-08 17:57:20,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 17:57:21,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-08 17:57:21,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:57:21,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:57:21,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:57:22,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:23,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:23,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155649979] [2021-10-08 17:57:23,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155649979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:57:23,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:57:23,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-10-08 17:57:23,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279538518] [2021-10-08 17:57:23,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:57:23,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:23,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:57:23,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:57:23,391 INFO L87 Difference]: Start difference. First operand 1412 states and 5135 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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) [2021-10-08 17:57:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:26,904 INFO L93 Difference]: Finished difference Result 1528 states and 5400 transitions. [2021-10-08 17:57:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:57:26,905 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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 19 [2021-10-08 17:57:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:26,909 INFO L225 Difference]: With dead ends: 1528 [2021-10-08 17:57:26,909 INFO L226 Difference]: Without dead ends: 1528 [2021-10-08 17:57:26,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2914.0ms TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:57:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-08 17:57:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1418. [2021-10-08 17:57:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.6386732533521524) internal successors, (5156), 1417 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5156 transitions. [2021-10-08 17:57:26,949 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5156 transitions. Word has length 19 [2021-10-08 17:57:26,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:26,950 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 5156 transitions. [2021-10-08 17:57:26,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 17 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) [2021-10-08 17:57:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5156 transitions. [2021-10-08 17:57:26,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:57:26,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:26,955 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:26,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:27,170 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 [2021-10-08 17:57:27,171 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)] === [2021-10-08 17:57:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:27,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1019312562, now seen corresponding path program 46 times [2021-10-08 17:57:27,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:27,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070263911] [2021-10-08 17:57:27,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:57:27,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:27,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:27,174 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) [2021-10-08 17:57:27,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 17:57:27,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:57:27,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:57:28,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:57:28,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:28,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:30,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:30,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070263911] [2021-10-08 17:57:30,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070263911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:57:30,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:57:30,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 17:57:30,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312401741] [2021-10-08 17:57:30,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 17:57:30,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 17:57:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:57:30,392 INFO L87 Difference]: Start difference. First operand 1418 states and 5156 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:44,472 INFO L93 Difference]: Finished difference Result 1765 states and 6006 transitions. [2021-10-08 17:57:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:57:44,473 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 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 [2021-10-08 17:57:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:44,477 INFO L225 Difference]: With dead ends: 1765 [2021-10-08 17:57:44,478 INFO L226 Difference]: Without dead ends: 1752 [2021-10-08 17:57:44,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 11980.0ms TimeCoverageRelationStatistics Valid=845, Invalid=2125, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 17:57:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2021-10-08 17:57:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1438. [2021-10-08 17:57:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 3.6339596381350034) internal successors, (5222), 1437 states have internal predecessors, (5222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 5222 transitions. [2021-10-08 17:57:44,509 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 5222 transitions. Word has length 19 [2021-10-08 17:57:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:44,509 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 5222 transitions. [2021-10-08 17:57:44,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 5222 transitions. [2021-10-08 17:57:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:57:44,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:44,513 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:44,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:44,713 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 [2021-10-08 17:57:44,714 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)] === [2021-10-08 17:57:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:44,714 INFO L82 PathProgramCache]: Analyzing trace with hash -641228338, now seen corresponding path program 47 times [2021-10-08 17:57:44,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:44,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835990615] [2021-10-08 17:57:44,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:57:44,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:44,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:44,717 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) [2021-10-08 17:57:44,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 17:57:45,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:57:45,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:57:45,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:57:45,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:45,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:47,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:47,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835990615] [2021-10-08 17:57:47,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835990615] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:57:47,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:57:47,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-10-08 17:57:47,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480011114] [2021-10-08 17:57:47,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:57:47,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:57:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:57:47,560 INFO L87 Difference]: Start difference. First operand 1438 states and 5222 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:54,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:57:54,441 INFO L93 Difference]: Finished difference Result 1675 states and 5796 transitions. [2021-10-08 17:57:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 17:57:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 17:57:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:57:54,446 INFO L225 Difference]: With dead ends: 1675 [2021-10-08 17:57:54,446 INFO L226 Difference]: Without dead ends: 1644 [2021-10-08 17:57:54,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 6314.1ms TimeCoverageRelationStatistics Valid=317, Invalid=1089, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 17:57:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-10-08 17:57:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1492. [2021-10-08 17:57:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 3.625083836351442) internal successors, (5405), 1491 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5405 transitions. [2021-10-08 17:57:54,494 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5405 transitions. Word has length 19 [2021-10-08 17:57:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:57:54,495 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 5405 transitions. [2021-10-08 17:57:54,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:57:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5405 transitions. [2021-10-08 17:57:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:57:54,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:57:54,500 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:57:54,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 17:57:54,701 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 [2021-10-08 17:57:54,701 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)] === [2021-10-08 17:57:54,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:57:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1882912558, now seen corresponding path program 48 times [2021-10-08 17:57:54,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:57:54,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125851190] [2021-10-08 17:57:54,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:57:54,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:57:54,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:57:54,705 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) [2021-10-08 17:57:54,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 17:57:55,592 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:57:55,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:57:55,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:57:55,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:57:56,073 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:56,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:57:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:57:56,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:57:56,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125851190] [2021-10-08 17:57:56,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125851190] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:57:56,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:57:56,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 17:57:56,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873936100] [2021-10-08 17:57:56,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:57:56,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:57:56,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:57:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:57:56,770 INFO L87 Difference]: Start difference. First operand 1492 states and 5405 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:03,384 INFO L93 Difference]: Finished difference Result 1880 states and 6302 transitions. [2021-10-08 17:58:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:58:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 17:58:03,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:03,390 INFO L225 Difference]: With dead ends: 1880 [2021-10-08 17:58:03,390 INFO L226 Difference]: Without dead ends: 1868 [2021-10-08 17:58:03,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 5939.0ms TimeCoverageRelationStatistics Valid=681, Invalid=2181, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:58:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-10-08 17:58:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1552. [2021-10-08 17:58:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 3.6266924564796907) internal successors, (5625), 1551 states have internal predecessors, (5625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 5625 transitions. [2021-10-08 17:58:03,422 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 5625 transitions. Word has length 19 [2021-10-08 17:58:03,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:03,422 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 5625 transitions. [2021-10-08 17:58:03,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 5625 transitions. [2021-10-08 17:58:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:58:03,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:03,426 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:03,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:03,627 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 [2021-10-08 17:58:03,627 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)] === [2021-10-08 17:58:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:03,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2035689902, now seen corresponding path program 49 times [2021-10-08 17:58:03,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:03,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [274940679] [2021-10-08 17:58:03,629 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:58:03,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:03,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:03,630 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) [2021-10-08 17:58:03,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 17:58:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:58:04,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:58:04,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:04,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:05,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:05,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [274940679] [2021-10-08 17:58:05,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [274940679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:05,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:05,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2021-10-08 17:58:05,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397520289] [2021-10-08 17:58:05,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:58:05,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:58:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:58:05,550 INFO L87 Difference]: Start difference. First operand 1552 states and 5625 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-08 17:58:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:10,234 INFO L93 Difference]: Finished difference Result 1802 states and 6215 transitions. [2021-10-08 17:58:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:58:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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 19 [2021-10-08 17:58:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:10,240 INFO L225 Difference]: With dead ends: 1802 [2021-10-08 17:58:10,241 INFO L226 Difference]: Without dead ends: 1794 [2021-10-08 17:58:10,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 4081.1ms TimeCoverageRelationStatistics Valid=557, Invalid=1893, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 17:58:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2021-10-08 17:58:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1572. [2021-10-08 17:58:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1571 states have (on average 3.622533418204965) internal successors, (5691), 1571 states have internal predecessors, (5691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 5691 transitions. [2021-10-08 17:58:10,274 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 5691 transitions. Word has length 19 [2021-10-08 17:58:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:10,274 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 5691 transitions. [2021-10-08 17:58:10,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 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) [2021-10-08 17:58:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 5691 transitions. [2021-10-08 17:58:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:58:10,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:10,278 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:10,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-08 17:58:10,479 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 [2021-10-08 17:58:10,479 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)] === [2021-10-08 17:58:10,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash 516597550, now seen corresponding path program 50 times [2021-10-08 17:58:10,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:10,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900735150] [2021-10-08 17:58:10,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:10,482 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:10,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:10,484 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) [2021-10-08 17:58:10,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 17:58:11,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:58:11,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:11,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:58:11,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:11,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:12,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:12,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900735150] [2021-10-08 17:58:12,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900735150] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:12,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:12,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 17:58:12,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035993616] [2021-10-08 17:58:12,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:58:12,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:58:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:58:12,667 INFO L87 Difference]: Start difference. First operand 1572 states and 5691 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:16,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:16,801 INFO L93 Difference]: Finished difference Result 1793 states and 6156 transitions. [2021-10-08 17:58:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:58:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 [2021-10-08 17:58:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:16,807 INFO L225 Difference]: With dead ends: 1793 [2021-10-08 17:58:16,807 INFO L226 Difference]: Without dead ends: 1788 [2021-10-08 17:58:16,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 3163.8ms TimeCoverageRelationStatistics Valid=409, Invalid=1483, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 17:58:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-10-08 17:58:16,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1592. [2021-10-08 17:58:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1591 states have (on average 3.629792583280955) internal successors, (5775), 1591 states have internal predecessors, (5775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 5775 transitions. [2021-10-08 17:58:16,844 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 5775 transitions. Word has length 19 [2021-10-08 17:58:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:16,844 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 5775 transitions. [2021-10-08 17:58:16,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 5775 transitions. [2021-10-08 17:58:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:58:16,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:16,849 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:16,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:17,049 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 [2021-10-08 17:58:17,050 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)] === [2021-10-08 17:58:17,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2033032156, now seen corresponding path program 51 times [2021-10-08 17:58:17,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:17,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429165007] [2021-10-08 17:58:17,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:58:17,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:17,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:17,053 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) [2021-10-08 17:58:17,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 17:58:18,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:58:18,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:18,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:58:18,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:18,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:19,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:19,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429165007] [2021-10-08 17:58:19,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429165007] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:19,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:19,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 17:58:19,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517576850] [2021-10-08 17:58:19,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 17:58:19,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:19,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 17:58:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:58:19,210 INFO L87 Difference]: Start difference. First operand 1592 states and 5775 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:24,590 INFO L93 Difference]: Finished difference Result 1892 states and 6484 transitions. [2021-10-08 17:58:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:58:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 17:58:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:24,595 INFO L225 Difference]: With dead ends: 1892 [2021-10-08 17:58:24,596 INFO L226 Difference]: Without dead ends: 1884 [2021-10-08 17:58:24,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 4887.2ms TimeCoverageRelationStatistics Valid=631, Invalid=2231, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:58:24,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-10-08 17:58:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1608. [2021-10-08 17:58:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1607 states have (on average 3.624766645924082) internal successors, (5825), 1607 states have internal predecessors, (5825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 5825 transitions. [2021-10-08 17:58:24,643 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 5825 transitions. Word has length 19 [2021-10-08 17:58:24,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:24,644 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 5825 transitions. [2021-10-08 17:58:24,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 5825 transitions. [2021-10-08 17:58:24,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:58:24,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:24,648 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:24,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-10-08 17:58:24,848 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 [2021-10-08 17:58:24,849 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)] === [2021-10-08 17:58:24,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:24,850 INFO L82 PathProgramCache]: Analyzing trace with hash 687431528, now seen corresponding path program 52 times [2021-10-08 17:58:24,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:24,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642341529] [2021-10-08 17:58:24,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:58:24,851 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:24,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:24,853 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) [2021-10-08 17:58:24,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 17:58:25,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:58:25,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:25,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 17:58:25,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:26,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:58:26,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:26,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642341529] [2021-10-08 17:58:26,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642341529] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:26,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:26,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2021-10-08 17:58:26,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138823200] [2021-10-08 17:58:26,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:58:26,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:26,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:58:26,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:58:26,847 INFO L87 Difference]: Start difference. First operand 1608 states and 5825 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:32,438 INFO L93 Difference]: Finished difference Result 1895 states and 6449 transitions. [2021-10-08 17:58:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:58:32,439 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 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 [2021-10-08 17:58:32,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:32,443 INFO L225 Difference]: With dead ends: 1895 [2021-10-08 17:58:32,443 INFO L226 Difference]: Without dead ends: 1888 [2021-10-08 17:58:32,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 5033.7ms TimeCoverageRelationStatistics Valid=582, Invalid=2280, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:58:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2021-10-08 17:58:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1632. [2021-10-08 17:58:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 3.6253832004904964) internal successors, (5913), 1631 states have internal predecessors, (5913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 5913 transitions. [2021-10-08 17:58:32,477 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 5913 transitions. Word has length 19 [2021-10-08 17:58:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:32,477 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 5913 transitions. [2021-10-08 17:58:32,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 5913 transitions. [2021-10-08 17:58:32,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:58:32,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:32,481 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:32,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:32,682 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 [2021-10-08 17:58:32,682 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)] === [2021-10-08 17:58:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:32,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1763485384, now seen corresponding path program 53 times [2021-10-08 17:58:32,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:32,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627939467] [2021-10-08 17:58:32,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:58:32,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:32,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:32,686 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) [2021-10-08 17:58:32,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 17:58:33,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:58:33,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:33,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:58:33,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:34,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:35,049 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:35,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627939467] [2021-10-08 17:58:35,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627939467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:35,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:35,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-08 17:58:35,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806233510] [2021-10-08 17:58:35,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:58:35,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:35,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:58:35,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:58:35,051 INFO L87 Difference]: Start difference. First operand 1632 states and 5913 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 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) [2021-10-08 17:58:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:58:40,315 INFO L93 Difference]: Finished difference Result 1964 states and 6597 transitions. [2021-10-08 17:58:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:58:40,316 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 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 19 [2021-10-08 17:58:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:58:40,321 INFO L225 Difference]: With dead ends: 1964 [2021-10-08 17:58:40,321 INFO L226 Difference]: Without dead ends: 1956 [2021-10-08 17:58:40,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 4906.6ms TimeCoverageRelationStatistics Valid=459, Invalid=1703, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:58:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-10-08 17:58:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1634. [2021-10-08 17:58:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 3.5713410900183713) internal successors, (5832), 1633 states have internal predecessors, (5832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:58:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 5832 transitions. [2021-10-08 17:58:40,358 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 5832 transitions. Word has length 19 [2021-10-08 17:58:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:58:40,358 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 5832 transitions. [2021-10-08 17:58:40,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 19 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) [2021-10-08 17:58:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 5832 transitions. [2021-10-08 17:58:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:58:40,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:58:40,362 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:58:40,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-08 17:58:40,562 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 [2021-10-08 17:58:40,563 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)] === [2021-10-08 17:58:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:58:40,564 INFO L82 PathProgramCache]: Analyzing trace with hash 961861994, now seen corresponding path program 54 times [2021-10-08 17:58:40,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:58:40,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507819916] [2021-10-08 17:58:40,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:58:40,565 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:58:40,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:58:40,566 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) [2021-10-08 17:58:40,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 17:58:41,524 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 17:58:41,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:41,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:58:41,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:42,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:58:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:58:50,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:50,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507819916] [2021-10-08 17:58:50,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507819916] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:58:50,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:58:50,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-10-08 17:58:50,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705719106] [2021-10-08 17:58:50,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:58:50,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:58:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:58:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:58:50,151 INFO L87 Difference]: Start difference. First operand 1634 states and 5832 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:59:08,586 WARN L207 SmtUtils]: Spent 8.39 s on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2021-10-08 17:59:23,860 WARN L207 SmtUtils]: Spent 8.49 s on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-10-08 17:59:50,760 WARN L207 SmtUtils]: Spent 7.78 s on a formula simplification. DAG size of input: 108 DAG size of output: 99 [2021-10-08 17:59:56,851 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2021-10-08 18:00:08,733 WARN L207 SmtUtils]: Spent 11.56 s on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-10-08 18:00:20,108 WARN L207 SmtUtils]: Spent 11.11 s on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2021-10-08 18:00:27,002 WARN L207 SmtUtils]: Spent 6.61 s on a formula simplification that was a NOOP. DAG size: 74 [2021-10-08 18:00:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:30,711 INFO L93 Difference]: Finished difference Result 2089 states and 6879 transitions. [2021-10-08 18:00:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 18:00:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 [2021-10-08 18:00:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:30,718 INFO L225 Difference]: With dead ends: 2089 [2021-10-08 18:00:30,718 INFO L226 Difference]: Without dead ends: 2076 [2021-10-08 18:00:30,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 103789.4ms TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 18:00:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2021-10-08 18:00:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1680. [2021-10-08 18:00:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 3.571768910065515) internal successors, (5997), 1679 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 5997 transitions. [2021-10-08 18:00:30,764 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 5997 transitions. Word has length 19 [2021-10-08 18:00:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:30,764 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 5997 transitions. [2021-10-08 18:00:30,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 5997 transitions. [2021-10-08 18:00:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:00:30,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:30,771 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:30,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:30,986 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 [2021-10-08 18:00:30,987 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)] === [2021-10-08 18:00:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:30,988 INFO L82 PathProgramCache]: Analyzing trace with hash -592011968, now seen corresponding path program 55 times [2021-10-08 18:00:30,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:30,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146976983] [2021-10-08 18:00:30,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:00:30,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:30,990 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) [2021-10-08 18:00:30,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 18:00:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:00:31,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 18:00:31,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:00:32,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:35,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:35,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146976983] [2021-10-08 18:00:35,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146976983] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:35,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:35,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2021-10-08 18:00:35,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951697368] [2021-10-08 18:00:35,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:00:35,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:35,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:00:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:00:35,178 INFO L87 Difference]: Start difference. First operand 1680 states and 5997 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:47,449 INFO L93 Difference]: Finished difference Result 1807 states and 6258 transitions. [2021-10-08 18:00:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 18:00:47,450 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 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 [2021-10-08 18:00:47,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:47,454 INFO L225 Difference]: With dead ends: 1807 [2021-10-08 18:00:47,454 INFO L226 Difference]: Without dead ends: 1800 [2021-10-08 18:00:47,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 12396.8ms TimeCoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:00:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-10-08 18:00:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1704. [2021-10-08 18:00:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.567234292425132) internal successors, (6075), 1703 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 6075 transitions. [2021-10-08 18:00:47,503 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 6075 transitions. Word has length 19 [2021-10-08 18:00:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:47,503 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 6075 transitions. [2021-10-08 18:00:47,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:47,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 6075 transitions. [2021-10-08 18:00:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:00:47,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:47,507 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:00:47,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 18:00:47,707 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 [2021-10-08 18:00:47,708 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)] === [2021-10-08 18:00:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:00:47,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1440239792, now seen corresponding path program 56 times [2021-10-08 18:00:47,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:00:47,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790492888] [2021-10-08 18:00:47,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:00:47,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:00:47,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:00:47,713 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) [2021-10-08 18:00:47,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 18:00:48,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:00:48,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:00:48,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:00:48,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:00:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:49,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:00:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:00:50,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:00:50,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790492888] [2021-10-08 18:00:50,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790492888] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:00:50,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:00:50,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 18:00:50,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230917826] [2021-10-08 18:00:50,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:00:50,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:00:50,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:00:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:00:50,625 INFO L87 Difference]: Start difference. First operand 1704 states and 6075 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:00:59,944 INFO L93 Difference]: Finished difference Result 2239 states and 7550 transitions. [2021-10-08 18:00:59,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 18:00:59,945 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 [2021-10-08 18:00:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:00:59,951 INFO L225 Difference]: With dead ends: 2239 [2021-10-08 18:00:59,952 INFO L226 Difference]: Without dead ends: 2214 [2021-10-08 18:00:59,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 8491.2ms TimeCoverageRelationStatistics Valid=970, Invalid=2570, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 18:00:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2021-10-08 18:00:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1830. [2021-10-08 18:00:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1829 states have (on average 3.574630945872061) internal successors, (6538), 1829 states have internal predecessors, (6538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 6538 transitions. [2021-10-08 18:00:59,994 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 6538 transitions. Word has length 19 [2021-10-08 18:00:59,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:00:59,994 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 6538 transitions. [2021-10-08 18:00:59,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:00:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 6538 transitions. [2021-10-08 18:00:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:00:59,998 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:00:59,999 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:00,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:00,199 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 [2021-10-08 18:01:00,200 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)] === [2021-10-08 18:01:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:00,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1475967105, now seen corresponding path program 57 times [2021-10-08 18:01:00,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:00,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887122371] [2021-10-08 18:01:00,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:01:00,204 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:00,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:00,205 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) [2021-10-08 18:01:00,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 18:01:01,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:01:01,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:01,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:01:01,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:01:01,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:03,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:03,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887122371] [2021-10-08 18:01:03,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887122371] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:03,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:03,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2021-10-08 18:01:03,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804669965] [2021-10-08 18:01:03,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-08 18:01:03,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-08 18:01:03,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:01:03,438 INFO L87 Difference]: Start difference. First operand 1830 states and 6538 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:10,611 INFO L93 Difference]: Finished difference Result 1964 states and 6850 transitions. [2021-10-08 18:01:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 18:01:10,613 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:01:10,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:10,617 INFO L225 Difference]: With dead ends: 1964 [2021-10-08 18:01:10,617 INFO L226 Difference]: Without dead ends: 1962 [2021-10-08 18:01:10,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 6934.2ms TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 18:01:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-10-08 18:01:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1858. [2021-10-08 18:01:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 3.5788906838987615) internal successors, (6646), 1857 states have internal predecessors, (6646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 6646 transitions. [2021-10-08 18:01:10,656 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 6646 transitions. Word has length 20 [2021-10-08 18:01:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:10,656 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 6646 transitions. [2021-10-08 18:01:10,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 6646 transitions. [2021-10-08 18:01:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:01:10,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:10,661 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:10,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:10,862 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 [2021-10-08 18:01:10,862 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)] === [2021-10-08 18:01:10,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:10,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1492222805, now seen corresponding path program 58 times [2021-10-08 18:01:10,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:10,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479915360] [2021-10-08 18:01:10,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:01:10,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:10,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:10,866 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) [2021-10-08 18:01:10,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 18:01:11,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:01:11,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:11,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 18:01:11,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:16,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:01:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:20,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:01:20,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479915360] [2021-10-08 18:01:20,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479915360] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:01:20,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:01:20,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-08 18:01:20,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456467532] [2021-10-08 18:01:20,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:01:20,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:01:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:01:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:01:20,555 INFO L87 Difference]: Start difference. First operand 1858 states and 6646 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:51,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:01:51,631 INFO L93 Difference]: Finished difference Result 2233 states and 7597 transitions. [2021-10-08 18:01:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:01:51,632 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:01:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:01:51,638 INFO L225 Difference]: With dead ends: 2233 [2021-10-08 18:01:51,638 INFO L226 Difference]: Without dead ends: 2196 [2021-10-08 18:01:51,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 34135.7ms TimeCoverageRelationStatistics Valid=711, Invalid=1545, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:01:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-10-08 18:01:51,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1912. [2021-10-08 18:01:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 3.5850340136054424) internal successors, (6851), 1911 states have internal predecessors, (6851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 6851 transitions. [2021-10-08 18:01:51,688 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 6851 transitions. Word has length 20 [2021-10-08 18:01:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:01:51,688 INFO L470 AbstractCegarLoop]: Abstraction has 1912 states and 6851 transitions. [2021-10-08 18:01:51,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:01:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 6851 transitions. [2021-10-08 18:01:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:01:51,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:01:51,695 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:01:51,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 18:01:51,908 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 [2021-10-08 18:01:51,909 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)] === [2021-10-08 18:01:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:01:51,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1609688297, now seen corresponding path program 59 times [2021-10-08 18:01:51,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:01:51,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595457524] [2021-10-08 18:01:51,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:01:51,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:01:51,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:01:51,913 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) [2021-10-08 18:01:51,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 18:01:52,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 18:01:52,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:01:53,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:01:53,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:01:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:01:53,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:02:03,229 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-10-08 18:02:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:02:03,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:02:03,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595457524] [2021-10-08 18:02:03,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595457524] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:02:03,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:02:03,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2021-10-08 18:02:03,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747406987] [2021-10-08 18:02:03,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:02:03,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:02:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:02:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:02:03,494 INFO L87 Difference]: Start difference. First operand 1912 states and 6851 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:02:11,601 WARN L207 SmtUtils]: Spent 6.96 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-10-08 18:02:21,661 WARN L207 SmtUtils]: Spent 9.53 s on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2021-10-08 18:02:49,674 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2021-10-08 18:03:01,938 WARN L207 SmtUtils]: Spent 9.57 s on a formula simplification. DAG size of input: 74 DAG size of output: 45 [2021-10-08 18:03:29,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:29,220 INFO L93 Difference]: Finished difference Result 2519 states and 8261 transitions. [2021-10-08 18:03:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 18:03:29,223 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:03:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:29,228 INFO L225 Difference]: With dead ends: 2519 [2021-10-08 18:03:29,228 INFO L226 Difference]: Without dead ends: 2499 [2021-10-08 18:03:29,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 82273.5ms TimeCoverageRelationStatistics Valid=786, Invalid=2874, Unknown=0, NotChecked=0, Total=3660 [2021-10-08 18:03:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-10-08 18:03:29,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2024. [2021-10-08 18:03:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 3.6119624320316364) internal successors, (7307), 2023 states have internal predecessors, (7307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 7307 transitions. [2021-10-08 18:03:29,276 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 7307 transitions. Word has length 20 [2021-10-08 18:03:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:29,276 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 7307 transitions. [2021-10-08 18:03:29,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 7307 transitions. [2021-10-08 18:03:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:03:29,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:29,281 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:29,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:29,481 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 [2021-10-08 18:03:29,482 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:29,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1722450601, now seen corresponding path program 60 times [2021-10-08 18:03:29,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:29,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835832649] [2021-10-08 18:03:29,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:03:29,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:29,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:29,485 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:29,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 18:03:30,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:03:30,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:03:30,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 18:03:30,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:31,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:03:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:35,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:03:35,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835832649] [2021-10-08 18:03:35,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835832649] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:03:35,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:03:35,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-08 18:03:35,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638864655] [2021-10-08 18:03:35,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 18:03:35,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:03:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 18:03:35,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:03:35,202 INFO L87 Difference]: Start difference. First operand 2024 states and 7307 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:03:55,884 INFO L93 Difference]: Finished difference Result 2291 states and 8003 transitions. [2021-10-08 18:03:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:03:55,885 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:03:55,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:03:55,891 INFO L225 Difference]: With dead ends: 2291 [2021-10-08 18:03:55,891 INFO L226 Difference]: Without dead ends: 2270 [2021-10-08 18:03:55,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 20454.4ms TimeCoverageRelationStatistics Valid=580, Invalid=1400, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:03:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-10-08 18:03:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2096. [2021-10-08 18:03:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2095 states have (on average 3.6272076372315034) internal successors, (7599), 2095 states have internal predecessors, (7599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7599 transitions. [2021-10-08 18:03:55,939 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7599 transitions. Word has length 20 [2021-10-08 18:03:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:03:55,940 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 7599 transitions. [2021-10-08 18:03:55,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:03:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7599 transitions. [2021-10-08 18:03:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:03:55,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:03:55,945 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:03:55,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:56,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:03:56,146 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:03:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:03:56,147 INFO L82 PathProgramCache]: Analyzing trace with hash 662494101, now seen corresponding path program 61 times [2021-10-08 18:03:56,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:03:56,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426299606] [2021-10-08 18:03:56,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:03:56,149 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:03:56,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:03:56,150 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:03:56,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 18:03:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:03:57,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 18:03:57,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:03:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:03:58,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:01,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:01,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426299606] [2021-10-08 18:04:01,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426299606] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:01,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:01,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-08 18:04:01,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087959109] [2021-10-08 18:04:01,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 18:04:01,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 18:04:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:04:01,682 INFO L87 Difference]: Start difference. First operand 2096 states and 7599 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:04:20,390 INFO L93 Difference]: Finished difference Result 2327 states and 8169 transitions. [2021-10-08 18:04:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:04:20,392 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:04:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:04:20,397 INFO L225 Difference]: With dead ends: 2327 [2021-10-08 18:04:20,397 INFO L226 Difference]: Without dead ends: 2310 [2021-10-08 18:04:20,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 18187.9ms TimeCoverageRelationStatistics Valid=624, Invalid=1538, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:04:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-10-08 18:04:20,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2144. [2021-10-08 18:04:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 3.6364909006066264) internal successors, (7793), 2143 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 7793 transitions. [2021-10-08 18:04:20,440 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 7793 transitions. Word has length 20 [2021-10-08 18:04:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:04:20,440 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 7793 transitions. [2021-10-08 18:04:20,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:04:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 7793 transitions. [2021-10-08 18:04:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:04:20,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:04:20,445 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:04:20,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:20,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:20,646 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:04:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:04:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2029742911, now seen corresponding path program 62 times [2021-10-08 18:04:20,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:04:20,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694467958] [2021-10-08 18:04:20,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:04:20,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:04:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:04:20,650 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:04:20,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 18:04:21,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:04:21,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:04:21,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:04:21,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:04:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:22,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:04:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:04:24,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:04:24,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694467958] [2021-10-08 18:04:24,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694467958] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:04:24,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:04:24,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-08 18:04:24,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221167211] [2021-10-08 18:04:24,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:04:24,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:04:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:04:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:04:24,825 INFO L87 Difference]: Start difference. First operand 2144 states and 7793 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-08 18:04:28,570 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:04:28,573 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 [2021-10-08 18:04:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:04:28,582 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:04:28,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 18:04:28,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:04:28,783 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. [2021-10-08 18:04:28,786 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:04:28,787 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:04:28,787 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:04:28,787 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:04:28,787 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:04:28,787 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:04:28,787 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:04:28,787 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:04:28,788 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:04:28,788 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:04:28,788 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:04:28,792 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:04:28,792 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:04:28,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:04:28 BasicIcfg [2021-10-08 18:04:28,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:04:28,794 INFO L168 Benchmark]: Toolchain (without parser) took 837011.55 ms. Allocated memory was 174.1 MB in the beginning and 264.2 MB in the end (delta: 90.2 MB). Free memory was 147.9 MB in the beginning and 138.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:04:28,795 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 174.1 MB. Free memory is still 145.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:04:28,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.05 ms. Allocated memory is still 174.1 MB. Free memory was 147.5 MB in the beginning and 136.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:04:28,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.57 ms. Allocated memory is still 174.1 MB. Free memory was 136.6 MB in the beginning and 135.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:04:28,795 INFO L168 Benchmark]: Boogie Preprocessor took 34.47 ms. Allocated memory is still 174.1 MB. Free memory was 135.2 MB in the beginning and 133.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:04:28,796 INFO L168 Benchmark]: RCFGBuilder took 799.51 ms. Allocated memory is still 174.1 MB. Free memory was 133.7 MB in the beginning and 155.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-10-08 18:04:28,796 INFO L168 Benchmark]: TraceAbstraction took 835714.00 ms. Allocated memory was 174.1 MB in the beginning and 264.2 MB in the end (delta: 90.2 MB). Free memory was 154.5 MB in the beginning and 138.7 MB in the end (delta: 15.8 MB). Peak memory consumption was 105.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:04:28,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 174.1 MB. Free memory is still 145.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.05 ms. Allocated memory is still 174.1 MB. Free memory was 147.5 MB in the beginning and 136.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.57 ms. Allocated memory is still 174.1 MB. Free memory was 136.6 MB in the beginning and 135.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.47 ms. Allocated memory is still 174.1 MB. Free memory was 135.2 MB in the beginning and 133.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 799.51 ms. Allocated memory is still 174.1 MB. Free memory was 133.7 MB in the beginning and 155.0 MB in the end (delta: -21.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 835714.00 ms. Allocated memory was 174.1 MB in the beginning and 264.2 MB in the end (delta: 90.2 MB). Free memory was 154.5 MB in the beginning and 138.7 MB in the end (delta: 15.8 MB). Peak memory consumption was 105.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7407.0ms, 89 PlacesBefore, 32 PlacesAfterwards, 88 TransitionsBefore, 27 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 7 FixpointIterations, 57 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 92 TotalNumberOfCompositions, 710 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 701, positive: 700, positive conditional: 0, positive unconditional: 700, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 326, positive: 325, positive conditional: 0, positive unconditional: 325, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 326, positive: 325, positive conditional: 0, positive unconditional: 325, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 701, positive: 375, positive conditional: 0, positive unconditional: 375, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 326, unknown conditional: 0, unknown unconditional: 326] , 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: 76]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 71]: 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 (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - TimeoutResultAtElement [Line: 70]: 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 (2144states) and FLOYD_HOARE automaton (currently 19 states, 23 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 835575.7ms, OverallIterations: 69, TraceHistogramMax: 4, EmptinessCheckTime: 200.9ms, AutomataDifference: 653192.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7467.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2376 SDtfs, 9804 SDslu, 14385 SDs, 0 SdLazy, 19479 SolverSat, 3580 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 92829.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3728 GetRequests, 1383 SyntacticMatches, 8 SemanticMatches, 2336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24165 ImplicationChecksByTransitivity, 621353.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2144occurred in iteration=68, InterpolantAutomatonStates: 1956, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1705.8ms AutomataMinimizationTime, 68 MinimizatonAttempts, 12341 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 471.8ms SsaConstructionTime, 6010.0ms SatisfiabilityAnalysisTime, 123806.1ms InterpolantComputationTime, 1165 NumberOfCodeBlocks, 1154 NumberOfCodeBlocksAsserted, 157 NumberOfCheckSat, 2192 ConstructedInterpolants, 113 QuantifiedInterpolants, 26866 SizeOfPredicates, 532 NumberOfNonLiveVariables, 5013 ConjunctsInSsa, 1096 ConjunctsInUnsatCore, 138 InterpolantComputations, 15 PerfectInterpolantSequences, 198/1222 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