/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/mult-comm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 20:56:55,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 20:56:55,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 20:56:55,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 20:56:55,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 20:56:55,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 20:56:55,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 20:56:55,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 20:56:55,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 20:56:55,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 20:56:55,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 20:56:55,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 20:56:55,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 20:56:55,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 20:56:55,457 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 20:56:55,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 20:56:55,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 20:56:55,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 20:56:55,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 20:56:55,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 20:56:55,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 20:56:55,458 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 20:56:55,458 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 20:56:55,458 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 20:56:55,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 20:56:55,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 20:56:55,459 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 20:56:55,459 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 20:56:55,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 20:56:55,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 20:56:55,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 20:56:55,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 20:56:55,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 20:56:55,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:55,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 20:56:55,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 20:56:55,461 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 20:56:55,461 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 20:56:55,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 20:56:55,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 20:56:55,462 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 20:56:55,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 20:56:55,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 20:56:55,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 20:56:55,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 20:56:55,906 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 20:56:55,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2021-10-06 20:56:55,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0049b8d2f/78ce0e0670764e13a434fdd77f92f61e/FLAG76d3b17eb [2021-10-06 20:56:56,718 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 20:56:56,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2021-10-06 20:56:56,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0049b8d2f/78ce0e0670764e13a434fdd77f92f61e/FLAG76d3b17eb [2021-10-06 20:56:57,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0049b8d2f/78ce0e0670764e13a434fdd77f92f61e [2021-10-06 20:56:57,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 20:56:57,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 20:56:57,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:57,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 20:56:57,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 20:56:57,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3905cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57, skipping insertion in model container [2021-10-06 20:56:57,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 20:56:57,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 20:56:57,317 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/mult-comm.wvr.c[1870,1883] [2021-10-06 20:56:57,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,336 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 20:56:57,360 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/mult-comm.wvr.c[1870,1883] [2021-10-06 20:56:57,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 20:56:57,380 INFO L208 MainTranslator]: Completed translation [2021-10-06 20:56:57,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57 WrapperNode [2021-10-06 20:56:57,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 20:56:57,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 20:56:57,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 20:56:57,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 20:56:57,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 20:56:57,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 20:56:57,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 20:56:57,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 20:56:57,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 20:56:57,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 20:56:57,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (1/1) ... [2021-10-06 20:56:57,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 20:56:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 20:56:57,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-06 20:56:57,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-06 20:56:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 20:56:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 20:56:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 20:56:57,589 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 20:56:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 20:56:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 20:56:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 20:56:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 20:56:57,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 20:56:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 20:56:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 20:56:57,593 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 20:56:58,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 20:56:58,053 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 20:56:58,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:58 BoogieIcfgContainer [2021-10-06 20:56:58,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 20:56:58,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 20:56:58,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 20:56:58,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 20:56:58,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 08:56:57" (1/3) ... [2021-10-06 20:56:58,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de07f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:58, skipping insertion in model container [2021-10-06 20:56:58,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 08:56:57" (2/3) ... [2021-10-06 20:56:58,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de07f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 08:56:58, skipping insertion in model container [2021-10-06 20:56:58,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 08:56:58" (3/3) ... [2021-10-06 20:56:58,067 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2021-10-06 20:56:58,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 20:56:58,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 20:56:58,074 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 20:56:58,142 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,143 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,143 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,143 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,144 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,144 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,144 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,144 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,145 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,145 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,145 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,149 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,150 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,150 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,150 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,151 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,153 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,153 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,153 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,154 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,156 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,156 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,156 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,157 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,157 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,157 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,157 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,157 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,158 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,162 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,162 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,162 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,163 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,167 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,168 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,168 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 20:56:58,175 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 20:56:58,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 20:56:58,235 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-06 20:56:58,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 20:56:58,255 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 20:56:58,269 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 87 transitions, 190 flow [2021-10-06 20:56:58,273 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 87 transitions, 190 flow [2021-10-06 20:56:58,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 190 flow [2021-10-06 20:56:58,358 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2021-10-06 20:56:58,359 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 20:56:58,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 6/85 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. 0/69 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2021-10-06 20:56:58,372 INFO L116 LiptonReduction]: Number of co-enabled transitions 576 [2021-10-06 20:57:06,303 INFO L131 LiptonReduction]: Checked pairs total: 614 [2021-10-06 20:57:06,303 INFO L133 LiptonReduction]: Total number of compositions: 87 [2021-10-06 20:57:06,324 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 20:57:06,342 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) [2021-10-06 20:57:06,345 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) [2021-10-06 20:57:06,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 20:57:06,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:06,352 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 20:57:06,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:06,359 INFO L82 PathProgramCache]: Analyzing trace with hash 338, now seen corresponding path program 1 times [2021-10-06 20:57:06,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:06,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328989334] [2021-10-06 20:57:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:06,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:06,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:06,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:06,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 20:57:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:06,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 20:57:06,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:06,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:06,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:06,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328989334] [2021-10-06 20:57:06,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328989334] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:06,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:06,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 20:57:06,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827290835] [2021-10-06 20:57:06,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 20:57:06,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 20:57:06,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:06,473 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) [2021-10-06 20:57:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:06,490 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-06 20:57:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 20:57:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-06 20:57:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:06,504 INFO L225 Difference]: With dead ends: 64 [2021-10-06 20:57:06,504 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 20:57:06,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 20:57:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 20:57:06,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-06 20:57:06,546 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) [2021-10-06 20:57:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-06 20:57:06,550 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-06 20:57:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:06,550 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-06 20:57:06,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-06 20:57:06,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:06,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:06,551 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:06,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:06,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:06,763 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash 330876, now seen corresponding path program 1 times [2021-10-06 20:57:06,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:06,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048374551] [2021-10-06 20:57:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:06,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:06,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:06,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 20:57:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:06,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:06,966 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 20:57:06,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-06 20:57:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:07,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:07,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:07,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048374551] [2021-10-06 20:57:07,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048374551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:07,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:07,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:07,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755972709] [2021-10-06 20:57:07,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:07,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:07,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:07,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:07,043 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) [2021-10-06 20:57:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:07,087 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-06 20:57:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:07,089 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 [2021-10-06 20:57:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:07,090 INFO L225 Difference]: With dead ends: 58 [2021-10-06 20:57:07,091 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 20:57:07,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 20:57:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 20:57:07,099 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) [2021-10-06 20:57:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 20:57:07,104 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-06 20:57:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:07,105 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 20:57:07,105 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) [2021-10-06 20:57:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 20:57:07,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 20:57:07,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:07,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 20:57:07,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:07,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:07,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:07,322 INFO L82 PathProgramCache]: Analyzing trace with hash 330878, now seen corresponding path program 1 times [2021-10-06 20:57:07,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:07,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60476952] [2021-10-06 20:57:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:07,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:07,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:07,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:07,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 20:57:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:07,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 20:57:07,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:07,492 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:57:07,493 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 [2021-10-06 20:57:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:07,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:07,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:07,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60476952] [2021-10-06 20:57:07,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60476952] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:07,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:07,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:07,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223125582] [2021-10-06 20:57:07,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:07,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:07,657 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) [2021-10-06 20:57:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:07,680 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-06 20:57:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:07,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-06 20:57:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:07,682 INFO L225 Difference]: With dead ends: 52 [2021-10-06 20:57:07,683 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 20:57:07,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 20:57:07,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 20:57:07,690 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) [2021-10-06 20:57:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-06 20:57:07,692 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-06 20:57:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:07,693 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-06 20:57:07,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-06 20:57:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:07,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:07,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:07,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:07,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:07,909 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:07,910 INFO L82 PathProgramCache]: Analyzing trace with hash 317979861, now seen corresponding path program 1 times [2021-10-06 20:57:07,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:07,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803694025] [2021-10-06 20:57:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:07,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:07,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:07,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:07,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 20:57:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:07,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 20:57:07,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:07,980 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 20:57:07,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-06 20:57:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:08,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:08,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:08,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803694025] [2021-10-06 20:57:08,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803694025] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:08,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:08,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 20:57:08,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768818182] [2021-10-06 20:57:08,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 20:57:08,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:08,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 20:57:08,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:08,061 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) [2021-10-06 20:57:08,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:08,086 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-06 20:57:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:08,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:57:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:08,091 INFO L225 Difference]: With dead ends: 43 [2021-10-06 20:57:08,091 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 20:57:08,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 20:57:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 20:57:08,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 20:57:08,107 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) [2021-10-06 20:57:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-06 20:57:08,111 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-06 20:57:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:08,114 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-06 20:57:08,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-06 20:57:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 20:57:08,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:08,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 20:57:08,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:08,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:08,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 20:57:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:08,331 INFO L82 PathProgramCache]: Analyzing trace with hash 317979862, now seen corresponding path program 1 times [2021-10-06 20:57:08,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:08,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308400089] [2021-10-06 20:57:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:08,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:08,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:08,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 20:57:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:08,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 20:57:08,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:08,505 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 20:57:08,505 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 26 treesize of output 48 [2021-10-06 20:57:08,514 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 49 treesize of output 47 [2021-10-06 20:57:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:08,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:08,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:08,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308400089] [2021-10-06 20:57:08,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308400089] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:08,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:08,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:08,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201337406] [2021-10-06 20:57:08,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:08,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:08,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:08,777 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) [2021-10-06 20:57:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:08,794 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 20:57:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:08,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 20:57:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:08,796 INFO L225 Difference]: With dead ends: 34 [2021-10-06 20:57:08,796 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 20:57:08,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 20:57:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 20:57:08,799 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) [2021-10-06 20:57:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 20:57:08,800 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-06 20:57:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:08,801 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 20:57:08,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 20:57:08,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 20:57:08,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:08,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:08,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:09,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,004 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)] === [2021-10-06 20:57:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash -572011521, now seen corresponding path program 1 times [2021-10-06 20:57:09,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:09,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477456295] [2021-10-06 20:57:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:09,006 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:09,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:09,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 20:57:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:09,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 20:57:09,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:09,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:09,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477456295] [2021-10-06 20:57:09,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477456295] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 20:57:09,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 20:57:09,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 20:57:09,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770950890] [2021-10-06 20:57:09,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 20:57:09,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 20:57:09,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:09,221 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:09,235 INFO L93 Difference]: Finished difference Result 61 states and 134 transitions. [2021-10-06 20:57:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 20:57:09,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 13 [2021-10-06 20:57:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:09,236 INFO L225 Difference]: With dead ends: 61 [2021-10-06 20:57:09,237 INFO L226 Difference]: Without dead ends: 56 [2021-10-06 20:57:09,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 20:57:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-06 20:57:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-06 20:57:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.2545454545454544) internal successors, (124), 55 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 124 transitions. [2021-10-06 20:57:09,243 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 124 transitions. Word has length 13 [2021-10-06 20:57:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:09,244 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 124 transitions. [2021-10-06 20:57:09,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 124 transitions. [2021-10-06 20:57:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:09,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:09,246 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:09,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:09,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,461 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)] === [2021-10-06 20:57:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:09,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1131225712, now seen corresponding path program 1 times [2021-10-06 20:57:09,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:09,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19618711] [2021-10-06 20:57:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:09,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:09,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:09,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:09,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 20:57:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:09,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 20:57:09,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:09,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:09,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19618711] [2021-10-06 20:57:09,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19618711] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:09,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:09,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:09,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692454227] [2021-10-06 20:57:09,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:09,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:09,967 INFO L87 Difference]: Start difference. First operand 56 states and 124 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:10,282 INFO L93 Difference]: Finished difference Result 120 states and 264 transitions. [2021-10-06 20:57:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:57:10,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:10,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:10,285 INFO L225 Difference]: With dead ends: 120 [2021-10-06 20:57:10,285 INFO L226 Difference]: Without dead ends: 108 [2021-10-06 20:57:10,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 240.2ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-06 20:57:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 56. [2021-10-06 20:57:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 55 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 135 transitions. [2021-10-06 20:57:10,302 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 135 transitions. Word has length 14 [2021-10-06 20:57:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:10,302 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 135 transitions. [2021-10-06 20:57:10,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 135 transitions. [2021-10-06 20:57:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:10,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:10,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:10,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:10,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:10,519 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)] === [2021-10-06 20:57:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:10,520 INFO L82 PathProgramCache]: Analyzing trace with hash -551529236, now seen corresponding path program 1 times [2021-10-06 20:57:10,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:10,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190330412] [2021-10-06 20:57:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:10,521 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:10,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:10,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:10,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 20:57:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:10,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 20:57:10,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:10,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:10,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:10,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190330412] [2021-10-06 20:57:10,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190330412] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:10,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:10,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:10,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993217868] [2021-10-06 20:57:10,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:10,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:10,999 INFO L87 Difference]: Start difference. First operand 56 states and 135 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:11,177 INFO L93 Difference]: Finished difference Result 130 states and 279 transitions. [2021-10-06 20:57:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:57:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:11,179 INFO L225 Difference]: With dead ends: 130 [2021-10-06 20:57:11,179 INFO L226 Difference]: Without dead ends: 106 [2021-10-06 20:57:11,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-10-06 20:57:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-06 20:57:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 66. [2021-10-06 20:57:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.5384615384615383) internal successors, (165), 65 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 165 transitions. [2021-10-06 20:57:11,186 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 165 transitions. Word has length 14 [2021-10-06 20:57:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:11,187 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 165 transitions. [2021-10-06 20:57:11,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 165 transitions. [2021-10-06 20:57:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:11,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:11,188 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:11,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:11,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:11,403 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)] === [2021-10-06 20:57:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:11,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1527176212, now seen corresponding path program 2 times [2021-10-06 20:57:11,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:11,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101993538] [2021-10-06 20:57:11,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:11,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:11,406 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:11,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 20:57:11,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:11,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:11,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 20:57:11,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:11,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:11,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:11,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101993538] [2021-10-06 20:57:11,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101993538] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:11,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:11,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:11,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063988512] [2021-10-06 20:57:11,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:11,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:11,910 INFO L87 Difference]: Start difference. First operand 66 states and 165 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:12,280 INFO L93 Difference]: Finished difference Result 150 states and 334 transitions. [2021-10-06 20:57:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 20:57:12,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:12,283 INFO L225 Difference]: With dead ends: 150 [2021-10-06 20:57:12,283 INFO L226 Difference]: Without dead ends: 134 [2021-10-06 20:57:12,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 272.4ms TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:57:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-06 20:57:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 68. [2021-10-06 20:57:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.5970149253731343) internal successors, (174), 67 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 174 transitions. [2021-10-06 20:57:12,290 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 174 transitions. Word has length 14 [2021-10-06 20:57:12,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:12,291 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 174 transitions. [2021-10-06 20:57:12,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 174 transitions. [2021-10-06 20:57:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:12,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:12,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:12,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:12,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:12,505 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)] === [2021-10-06 20:57:12,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:12,506 INFO L82 PathProgramCache]: Analyzing trace with hash 247831150, now seen corresponding path program 2 times [2021-10-06 20:57:12,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:12,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390490418] [2021-10-06 20:57:12,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:12,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:12,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:12,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:12,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 20:57:12,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:12,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:12,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 20:57:12,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:12,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:13,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:13,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390490418] [2021-10-06 20:57:13,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390490418] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:13,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:13,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:13,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660174465] [2021-10-06 20:57:13,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:13,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:13,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:13,056 INFO L87 Difference]: Start difference. First operand 68 states and 174 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:13,454 INFO L93 Difference]: Finished difference Result 177 states and 391 transitions. [2021-10-06 20:57:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-06 20:57:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:13,456 INFO L225 Difference]: With dead ends: 177 [2021-10-06 20:57:13,456 INFO L226 Difference]: Without dead ends: 150 [2021-10-06 20:57:13,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 280.1ms TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-10-06 20:57:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-06 20:57:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 72. [2021-10-06 20:57:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.676056338028169) internal successors, (190), 71 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 190 transitions. [2021-10-06 20:57:13,463 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 190 transitions. Word has length 14 [2021-10-06 20:57:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:13,464 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 190 transitions. [2021-10-06 20:57:13,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 190 transitions. [2021-10-06 20:57:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 20:57:13,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:13,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:13,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:13,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:13,679 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)] === [2021-10-06 20:57:13,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:13,680 INFO L82 PathProgramCache]: Analyzing trace with hash 960650130, now seen corresponding path program 3 times [2021-10-06 20:57:13,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:13,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569067185] [2021-10-06 20:57:13,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:13,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:13,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:13,683 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 20:57:13,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 20:57:13,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:13,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:13,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 20:57:13,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:14,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:14,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569067185] [2021-10-06 20:57:14,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569067185] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:14,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:14,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-06 20:57:14,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498119703] [2021-10-06 20:57:14,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 20:57:14,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 20:57:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-06 20:57:14,181 INFO L87 Difference]: Start difference. First operand 72 states and 190 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:14,434 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2021-10-06 20:57:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 20:57:14,435 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 20:57:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:14,436 INFO L225 Difference]: With dead ends: 132 [2021-10-06 20:57:14,436 INFO L226 Difference]: Without dead ends: 110 [2021-10-06 20:57:14,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 221.2ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:57:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-06 20:57:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 68. [2021-10-06 20:57:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.6417910447761193) internal successors, (177), 67 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 177 transitions. [2021-10-06 20:57:14,442 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 177 transitions. Word has length 14 [2021-10-06 20:57:14,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:14,442 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 177 transitions. [2021-10-06 20:57:14,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 177 transitions. [2021-10-06 20:57:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:14,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:14,444 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:14,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:14,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,656 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)] === [2021-10-06 20:57:14,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:14,657 INFO L82 PathProgramCache]: Analyzing trace with hash 709217435, now seen corresponding path program 1 times [2021-10-06 20:57:14,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:14,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135566633] [2021-10-06 20:57:14,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 20:57:14,659 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:14,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:14,660 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) [2021-10-06 20:57:14,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 20:57:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:14,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:14,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:15,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:15,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:15,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135566633] [2021-10-06 20:57:15,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135566633] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:15,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:15,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:15,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265063445] [2021-10-06 20:57:15,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:15,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:15,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:15,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:15,777 INFO L87 Difference]: Start difference. First operand 68 states and 177 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:18,908 INFO L93 Difference]: Finished difference Result 223 states and 481 transitions. [2021-10-06 20:57:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 20:57:18,909 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:18,911 INFO L225 Difference]: With dead ends: 223 [2021-10-06 20:57:18,911 INFO L226 Difference]: Without dead ends: 208 [2021-10-06 20:57:18,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2904.5ms TimeCoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 20:57:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-06 20:57:18,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 96. [2021-10-06 20:57:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.473684210526316) internal successors, (235), 95 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 235 transitions. [2021-10-06 20:57:18,919 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 235 transitions. Word has length 15 [2021-10-06 20:57:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:18,920 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 235 transitions. [2021-10-06 20:57:18,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:18,920 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 235 transitions. [2021-10-06 20:57:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:18,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:18,922 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:18,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:19,133 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 [2021-10-06 20:57:19,134 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)] === [2021-10-06 20:57:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:19,135 INFO L82 PathProgramCache]: Analyzing trace with hash -205603363, now seen corresponding path program 2 times [2021-10-06 20:57:19,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:19,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315833578] [2021-10-06 20:57:19,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:19,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:19,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:19,139 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) [2021-10-06 20:57:19,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 20:57:19,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:19,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:19,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:19,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:19,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:20,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:20,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315833578] [2021-10-06 20:57:20,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315833578] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:20,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:20,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:20,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414948803] [2021-10-06 20:57:20,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:20,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:20,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:20,303 INFO L87 Difference]: Start difference. First operand 96 states and 235 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:23,374 INFO L93 Difference]: Finished difference Result 255 states and 545 transitions. [2021-10-06 20:57:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 20:57:23,375 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:23,377 INFO L225 Difference]: With dead ends: 255 [2021-10-06 20:57:23,378 INFO L226 Difference]: Without dead ends: 240 [2021-10-06 20:57:23,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2730.8ms TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 20:57:23,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-06 20:57:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 104. [2021-10-06 20:57:23,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.563106796116505) internal successors, (264), 103 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 264 transitions. [2021-10-06 20:57:23,386 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 264 transitions. Word has length 15 [2021-10-06 20:57:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:23,387 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 264 transitions. [2021-10-06 20:57:23,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 264 transitions. [2021-10-06 20:57:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:23,388 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:23,388 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:23,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:23,600 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 [2021-10-06 20:57:23,601 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)] === [2021-10-06 20:57:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:23,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1508577821, now seen corresponding path program 3 times [2021-10-06 20:57:23,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:23,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939015852] [2021-10-06 20:57:23,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:23,603 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:23,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:23,605 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) [2021-10-06 20:57:23,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 20:57:23,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:23,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:23,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:23,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:24,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:24,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:24,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939015852] [2021-10-06 20:57:24,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939015852] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:24,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:24,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:24,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418897824] [2021-10-06 20:57:24,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:24,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:24,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:24,692 INFO L87 Difference]: Start difference. First operand 104 states and 264 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:27,333 INFO L93 Difference]: Finished difference Result 311 states and 646 transitions. [2021-10-06 20:57:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 20:57:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:27,337 INFO L225 Difference]: With dead ends: 311 [2021-10-06 20:57:27,337 INFO L226 Difference]: Without dead ends: 296 [2021-10-06 20:57:27,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2534.8ms TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 20:57:27,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-06 20:57:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 104. [2021-10-06 20:57:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.6310679611650487) internal successors, (271), 103 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 271 transitions. [2021-10-06 20:57:27,345 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 271 transitions. Word has length 15 [2021-10-06 20:57:27,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:27,346 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 271 transitions. [2021-10-06 20:57:27,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 271 transitions. [2021-10-06 20:57:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:27,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:27,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:27,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:27,559 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 [2021-10-06 20:57:27,560 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)] === [2021-10-06 20:57:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1536283451, now seen corresponding path program 4 times [2021-10-06 20:57:27,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:27,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115105155] [2021-10-06 20:57:27,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:27,562 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:27,564 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) [2021-10-06 20:57:27,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 20:57:27,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:27,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:27,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:27,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:28,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:28,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:28,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115105155] [2021-10-06 20:57:28,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115105155] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:28,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:28,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:28,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74088762] [2021-10-06 20:57:28,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:28,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:28,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:28,672 INFO L87 Difference]: Start difference. First operand 104 states and 271 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:31,624 INFO L93 Difference]: Finished difference Result 277 states and 593 transitions. [2021-10-06 20:57:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 20:57:31,630 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:31,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:31,633 INFO L225 Difference]: With dead ends: 277 [2021-10-06 20:57:31,633 INFO L226 Difference]: Without dead ends: 262 [2021-10-06 20:57:31,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 2780.3ms TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 20:57:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-06 20:57:31,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 104. [2021-10-06 20:57:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.5728155339805827) internal successors, (265), 103 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 265 transitions. [2021-10-06 20:57:31,641 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 265 transitions. Word has length 15 [2021-10-06 20:57:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:31,642 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 265 transitions. [2021-10-06 20:57:31,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 265 transitions. [2021-10-06 20:57:31,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:31,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:31,643 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:31,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:31,855 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 [2021-10-06 20:57:31,856 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)] === [2021-10-06 20:57:31,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:31,857 INFO L82 PathProgramCache]: Analyzing trace with hash 825523435, now seen corresponding path program 5 times [2021-10-06 20:57:31,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:31,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285631143] [2021-10-06 20:57:31,858 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:31,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:31,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:31,859 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) [2021-10-06 20:57:31,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 20:57:32,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:32,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:32,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:32,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:32,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:33,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:33,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285631143] [2021-10-06 20:57:33,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285631143] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:33,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:33,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:33,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732925421] [2021-10-06 20:57:33,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:33,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:33,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:33,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:33,122 INFO L87 Difference]: Start difference. First operand 104 states and 265 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:35,619 INFO L93 Difference]: Finished difference Result 229 states and 516 transitions. [2021-10-06 20:57:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 20:57:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:35,622 INFO L225 Difference]: With dead ends: 229 [2021-10-06 20:57:35,622 INFO L226 Difference]: Without dead ends: 214 [2021-10-06 20:57:35,623 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2402.0ms TimeCoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2021-10-06 20:57:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-06 20:57:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 122. [2021-10-06 20:57:35,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.7355371900826446) internal successors, (331), 121 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 331 transitions. [2021-10-06 20:57:35,631 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 331 transitions. Word has length 15 [2021-10-06 20:57:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:35,631 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 331 transitions. [2021-10-06 20:57:35,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 331 transitions. [2021-10-06 20:57:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:35,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:35,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:35,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-06 20:57:35,845 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 [2021-10-06 20:57:35,845 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)] === [2021-10-06 20:57:35,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:35,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1755262677, now seen corresponding path program 6 times [2021-10-06 20:57:35,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:35,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877936819] [2021-10-06 20:57:35,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:35,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:35,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:35,848 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) [2021-10-06 20:57:35,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 20:57:36,069 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 20:57:36,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:36,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:36,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:36,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:37,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:37,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877936819] [2021-10-06 20:57:37,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877936819] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:37,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:37,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:37,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274560929] [2021-10-06 20:57:37,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:37,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:37,141 INFO L87 Difference]: Start difference. First operand 122 states and 331 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:39,031 INFO L93 Difference]: Finished difference Result 282 states and 642 transitions. [2021-10-06 20:57:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 20:57:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:39,034 INFO L225 Difference]: With dead ends: 282 [2021-10-06 20:57:39,035 INFO L226 Difference]: Without dead ends: 272 [2021-10-06 20:57:39,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1875.8ms TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2021-10-06 20:57:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-06 20:57:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 130. [2021-10-06 20:57:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.8449612403100777) internal successors, (367), 129 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 367 transitions. [2021-10-06 20:57:39,043 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 367 transitions. Word has length 15 [2021-10-06 20:57:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:39,043 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 367 transitions. [2021-10-06 20:57:39,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 367 transitions. [2021-10-06 20:57:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:39,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:39,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:39,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-06 20:57:39,248 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 [2021-10-06 20:57:39,249 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)] === [2021-10-06 20:57:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:39,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1727557047, now seen corresponding path program 7 times [2021-10-06 20:57:39,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:39,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193621549] [2021-10-06 20:57:39,251 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:57:39,251 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:39,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:39,253 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) [2021-10-06 20:57:39,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 20:57:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:57:39,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:39,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:39,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:40,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:40,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193621549] [2021-10-06 20:57:40,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193621549] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:40,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:40,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:40,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332130449] [2021-10-06 20:57:40,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:40,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:40,522 INFO L87 Difference]: Start difference. First operand 130 states and 367 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:42,529 INFO L93 Difference]: Finished difference Result 248 states and 583 transitions. [2021-10-06 20:57:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-06 20:57:42,530 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:42,531 INFO L225 Difference]: With dead ends: 248 [2021-10-06 20:57:42,532 INFO L226 Difference]: Without dead ends: 238 [2021-10-06 20:57:42,532 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1998.2ms TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-10-06 20:57:42,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-06 20:57:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 128. [2021-10-06 20:57:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.8188976377952755) internal successors, (358), 127 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 358 transitions. [2021-10-06 20:57:42,539 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 358 transitions. Word has length 15 [2021-10-06 20:57:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:42,539 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 358 transitions. [2021-10-06 20:57:42,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 358 transitions. [2021-10-06 20:57:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:42,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:42,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:42,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:42,753 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 [2021-10-06 20:57:42,753 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)] === [2021-10-06 20:57:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash -44649369, now seen corresponding path program 8 times [2021-10-06 20:57:42,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:42,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522520752] [2021-10-06 20:57:42,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:57:42,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:42,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:42,757 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) [2021-10-06 20:57:42,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 20:57:43,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:43,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:43,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:43,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:43,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:44,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:44,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522520752] [2021-10-06 20:57:44,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522520752] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:44,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:44,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:44,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862976698] [2021-10-06 20:57:44,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:44,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:44,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:44,060 INFO L87 Difference]: Start difference. First operand 128 states and 358 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:45,837 INFO L93 Difference]: Finished difference Result 274 states and 637 transitions. [2021-10-06 20:57:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 20:57:45,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:45,841 INFO L225 Difference]: With dead ends: 274 [2021-10-06 20:57:45,842 INFO L226 Difference]: Without dead ends: 264 [2021-10-06 20:57:45,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1751.0ms TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2021-10-06 20:57:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-06 20:57:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 136. [2021-10-06 20:57:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.9703703703703703) internal successors, (401), 135 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 401 transitions. [2021-10-06 20:57:45,850 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 401 transitions. Word has length 15 [2021-10-06 20:57:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:45,850 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 401 transitions. [2021-10-06 20:57:45,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 401 transitions. [2021-10-06 20:57:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:45,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:45,852 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:45,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-06 20:57:46,064 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 [2021-10-06 20:57:46,064 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)] === [2021-10-06 20:57:46,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash -16943739, now seen corresponding path program 9 times [2021-10-06 20:57:46,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:46,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951181809] [2021-10-06 20:57:46,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:57:46,067 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:46,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:46,070 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) [2021-10-06 20:57:46,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 20:57:46,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:57:46,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:46,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:46,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:46,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:47,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:47,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951181809] [2021-10-06 20:57:47,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951181809] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:47,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:47,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:47,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667407432] [2021-10-06 20:57:47,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:47,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:47,362 INFO L87 Difference]: Start difference. First operand 136 states and 401 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:49,266 INFO L93 Difference]: Finished difference Result 274 states and 628 transitions. [2021-10-06 20:57:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 20:57:49,267 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:49,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:49,269 INFO L225 Difference]: With dead ends: 274 [2021-10-06 20:57:49,269 INFO L226 Difference]: Without dead ends: 264 [2021-10-06 20:57:49,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1941.4ms TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2021-10-06 20:57:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-06 20:57:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 132. [2021-10-06 20:57:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.9236641221374047) internal successors, (383), 131 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 383 transitions. [2021-10-06 20:57:49,277 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 383 transitions. Word has length 15 [2021-10-06 20:57:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:49,278 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 383 transitions. [2021-10-06 20:57:49,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 383 transitions. [2021-10-06 20:57:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:49,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:49,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:49,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:49,491 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 [2021-10-06 20:57:49,492 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)] === [2021-10-06 20:57:49,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:49,493 INFO L82 PathProgramCache]: Analyzing trace with hash 845498667, now seen corresponding path program 10 times [2021-10-06 20:57:49,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:49,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78913268] [2021-10-06 20:57:49,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:57:49,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:49,496 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) [2021-10-06 20:57:49,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 20:57:49,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:57:49,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:49,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:49,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:50,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:50,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:50,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78913268] [2021-10-06 20:57:50,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78913268] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:50,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:50,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:50,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628807994] [2021-10-06 20:57:50,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:50,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:50,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:50,846 INFO L87 Difference]: Start difference. First operand 132 states and 383 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:53,680 INFO L93 Difference]: Finished difference Result 212 states and 524 transitions. [2021-10-06 20:57:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 20:57:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:53,682 INFO L225 Difference]: With dead ends: 212 [2021-10-06 20:57:53,683 INFO L226 Difference]: Without dead ends: 202 [2021-10-06 20:57:53,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2651.7ms TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 20:57:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-06 20:57:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 136. [2021-10-06 20:57:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.925925925925926) internal successors, (395), 135 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 395 transitions. [2021-10-06 20:57:53,690 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 395 transitions. Word has length 15 [2021-10-06 20:57:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:53,690 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 395 transitions. [2021-10-06 20:57:53,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 395 transitions. [2021-10-06 20:57:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:53,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:53,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:53,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:53,901 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 [2021-10-06 20:57:53,902 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)] === [2021-10-06 20:57:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash 609176037, now seen corresponding path program 11 times [2021-10-06 20:57:53,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:53,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100757203] [2021-10-06 20:57:53,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:57:53,904 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:53,905 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) [2021-10-06 20:57:53,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 20:57:54,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:57:54,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:54,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:54,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:54,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:55,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:55,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100757203] [2021-10-06 20:57:55,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100757203] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:55,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:55,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:55,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648969080] [2021-10-06 20:57:55,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:55,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:55,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:55,067 INFO L87 Difference]: Start difference. First operand 136 states and 395 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:57:58,099 INFO L93 Difference]: Finished difference Result 287 states and 680 transitions. [2021-10-06 20:57:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 20:57:58,100 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:57:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:57:58,103 INFO L225 Difference]: With dead ends: 287 [2021-10-06 20:57:58,103 INFO L226 Difference]: Without dead ends: 272 [2021-10-06 20:57:58,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 2858.6ms TimeCoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 20:57:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-06 20:57:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 144. [2021-10-06 20:57:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.902097902097902) internal successors, (415), 143 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 415 transitions. [2021-10-06 20:57:58,112 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 415 transitions. Word has length 15 [2021-10-06 20:57:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:57:58,113 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 415 transitions. [2021-10-06 20:57:58,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:57:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 415 transitions. [2021-10-06 20:57:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:57:58,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:57:58,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:57:58,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 20:57:58,322 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 [2021-10-06 20:57:58,323 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)] === [2021-10-06 20:57:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:57:58,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1770376995, now seen corresponding path program 12 times [2021-10-06 20:57:58,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:57:58,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576204274] [2021-10-06 20:57:58,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:57:58,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:57:58,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:57:58,326 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) [2021-10-06 20:57:58,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 20:57:58,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:57:58,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:57:58,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:57:58,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:57:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:59,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:57:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:57:59,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:57:59,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576204274] [2021-10-06 20:57:59,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576204274] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:57:59,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:57:59,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:57:59,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481115955] [2021-10-06 20:57:59,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:57:59,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:57:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:57:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:57:59,582 INFO L87 Difference]: Start difference. First operand 144 states and 415 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:03,494 INFO L93 Difference]: Finished difference Result 396 states and 881 transitions. [2021-10-06 20:58:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 20:58:03,495 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:03,498 INFO L225 Difference]: With dead ends: 396 [2021-10-06 20:58:03,498 INFO L226 Difference]: Without dead ends: 381 [2021-10-06 20:58:03,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 3674.9ms TimeCoverageRelationStatistics Valid=481, Invalid=1589, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 20:58:03,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-10-06 20:58:03,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 152. [2021-10-06 20:58:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.986754966887417) internal successors, (451), 151 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 451 transitions. [2021-10-06 20:58:03,508 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 451 transitions. Word has length 15 [2021-10-06 20:58:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:03,509 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 451 transitions. [2021-10-06 20:58:03,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:03,509 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 451 transitions. [2021-10-06 20:58:03,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:03,510 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:03,510 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:03,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-06 20:58:03,723 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 [2021-10-06 20:58:03,724 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)] === [2021-10-06 20:58:03,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:03,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1742671365, now seen corresponding path program 13 times [2021-10-06 20:58:03,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:03,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989768540] [2021-10-06 20:58:03,726 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:03,726 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:03,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:03,727 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) [2021-10-06 20:58:03,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 20:58:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:04,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:04,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:04,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:04,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:04,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989768540] [2021-10-06 20:58:04,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989768540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:04,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:04,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:04,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781780395] [2021-10-06 20:58:04,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:04,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:04,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:04,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:04,974 INFO L87 Difference]: Start difference. First operand 152 states and 451 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:07,688 INFO L93 Difference]: Finished difference Result 383 states and 858 transitions. [2021-10-06 20:58:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 20:58:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:07,691 INFO L225 Difference]: With dead ends: 383 [2021-10-06 20:58:07,691 INFO L226 Difference]: Without dead ends: 368 [2021-10-06 20:58:07,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2512.5ms TimeCoverageRelationStatistics Valid=320, Invalid=1012, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 20:58:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-06 20:58:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 148. [2021-10-06 20:58:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.945578231292517) internal successors, (433), 147 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 433 transitions. [2021-10-06 20:58:07,701 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 433 transitions. Word has length 15 [2021-10-06 20:58:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:07,702 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 433 transitions. [2021-10-06 20:58:07,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 433 transitions. [2021-10-06 20:58:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:07,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:07,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:07,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:07,916 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 [2021-10-06 20:58:07,917 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)] === [2021-10-06 20:58:07,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:07,918 INFO L82 PathProgramCache]: Analyzing trace with hash -880228959, now seen corresponding path program 14 times [2021-10-06 20:58:07,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:07,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226733992] [2021-10-06 20:58:07,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:07,919 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:07,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:07,920 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) [2021-10-06 20:58:07,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 20:58:08,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:08,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:08,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:08,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:08,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:09,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:09,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226733992] [2021-10-06 20:58:09,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226733992] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:09,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:09,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:09,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278824696] [2021-10-06 20:58:09,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:09,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:09,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:09,183 INFO L87 Difference]: Start difference. First operand 148 states and 433 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:11,989 INFO L93 Difference]: Finished difference Result 309 states and 723 transitions. [2021-10-06 20:58:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 20:58:11,990 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:11,992 INFO L225 Difference]: With dead ends: 309 [2021-10-06 20:58:11,992 INFO L226 Difference]: Without dead ends: 294 [2021-10-06 20:58:11,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2562.4ms TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 20:58:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-06 20:58:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 150. [2021-10-06 20:58:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.966442953020134) internal successors, (442), 149 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 442 transitions. [2021-10-06 20:58:12,001 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 442 transitions. Word has length 15 [2021-10-06 20:58:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:12,001 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 442 transitions. [2021-10-06 20:58:12,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 442 transitions. [2021-10-06 20:58:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:12,002 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:12,003 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:12,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:12,215 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 [2021-10-06 20:58:12,216 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)] === [2021-10-06 20:58:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:12,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1438059769, now seen corresponding path program 15 times [2021-10-06 20:58:12,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:12,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882185622] [2021-10-06 20:58:12,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:12,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:12,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:12,219 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) [2021-10-06 20:58:12,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 20:58:12,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:12,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:12,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:12,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:12,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:13,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:13,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882185622] [2021-10-06 20:58:13,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882185622] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:13,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:13,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:13,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459707956] [2021-10-06 20:58:13,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:13,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:13,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:13,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:13,525 INFO L87 Difference]: Start difference. First operand 150 states and 442 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:16,011 INFO L93 Difference]: Finished difference Result 268 states and 678 transitions. [2021-10-06 20:58:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 20:58:16,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:16,015 INFO L225 Difference]: With dead ends: 268 [2021-10-06 20:58:16,015 INFO L226 Difference]: Without dead ends: 258 [2021-10-06 20:58:16,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2361.2ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 20:58:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-06 20:58:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 162. [2021-10-06 20:58:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 3.0372670807453415) internal successors, (489), 161 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 489 transitions. [2021-10-06 20:58:16,023 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 489 transitions. Word has length 15 [2021-10-06 20:58:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:16,024 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 489 transitions. [2021-10-06 20:58:16,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 489 transitions. [2021-10-06 20:58:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:16,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:16,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:16,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:16,226 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 [2021-10-06 20:58:16,226 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)] === [2021-10-06 20:58:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:16,227 INFO L82 PathProgramCache]: Analyzing trace with hash 276121415, now seen corresponding path program 16 times [2021-10-06 20:58:16,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:16,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141397249] [2021-10-06 20:58:16,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:16,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:16,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:16,229 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) [2021-10-06 20:58:16,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 20:58:16,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:16,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:16,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:16,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:16,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:17,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:17,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141397249] [2021-10-06 20:58:17,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141397249] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:17,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:17,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:17,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390800532] [2021-10-06 20:58:17,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:17,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:17,626 INFO L87 Difference]: Start difference. First operand 162 states and 489 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:19,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:19,853 INFO L93 Difference]: Finished difference Result 336 states and 817 transitions. [2021-10-06 20:58:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 20:58:19,855 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:19,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:19,856 INFO L225 Difference]: With dead ends: 336 [2021-10-06 20:58:19,857 INFO L226 Difference]: Without dead ends: 326 [2021-10-06 20:58:19,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2090.6ms TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2021-10-06 20:58:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-06 20:58:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 170. [2021-10-06 20:58:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 3.106508875739645) internal successors, (525), 169 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 525 transitions. [2021-10-06 20:58:19,866 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 525 transitions. Word has length 15 [2021-10-06 20:58:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:19,866 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 525 transitions. [2021-10-06 20:58:19,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 525 transitions. [2021-10-06 20:58:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:19,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:19,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:19,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-06 20:58:20,081 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 [2021-10-06 20:58:20,081 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)] === [2021-10-06 20:58:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash 303827045, now seen corresponding path program 17 times [2021-10-06 20:58:20,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:20,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122540006] [2021-10-06 20:58:20,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:20,083 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:20,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:20,084 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) [2021-10-06 20:58:20,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 20:58:20,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:58:20,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:20,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:20,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:20,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:21,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:21,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122540006] [2021-10-06 20:58:21,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122540006] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:21,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:21,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:21,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569291893] [2021-10-06 20:58:21,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:21,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:21,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:21,456 INFO L87 Difference]: Start difference. First operand 170 states and 525 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:23,316 INFO L93 Difference]: Finished difference Result 298 states and 751 transitions. [2021-10-06 20:58:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 20:58:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:23,319 INFO L225 Difference]: With dead ends: 298 [2021-10-06 20:58:23,320 INFO L226 Difference]: Without dead ends: 288 [2021-10-06 20:58:23,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1776.4ms TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2021-10-06 20:58:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-06 20:58:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 154. [2021-10-06 20:58:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.973856209150327) internal successors, (455), 153 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 455 transitions. [2021-10-06 20:58:23,328 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 455 transitions. Word has length 15 [2021-10-06 20:58:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:23,328 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 455 transitions. [2021-10-06 20:58:23,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 455 transitions. [2021-10-06 20:58:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:23,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:23,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:23,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:23,542 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 [2021-10-06 20:58:23,543 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)] === [2021-10-06 20:58:23,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:23,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1986734723, now seen corresponding path program 18 times [2021-10-06 20:58:23,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:23,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664606669] [2021-10-06 20:58:23,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:23,545 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:23,546 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) [2021-10-06 20:58:23,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 20:58:23,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:58:23,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:23,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:23,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:24,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:25,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:25,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664606669] [2021-10-06 20:58:25,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664606669] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:25,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:25,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:25,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720885826] [2021-10-06 20:58:25,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:25,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:25,058 INFO L87 Difference]: Start difference. First operand 154 states and 455 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:27,481 INFO L93 Difference]: Finished difference Result 326 states and 789 transitions. [2021-10-06 20:58:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 20:58:27,482 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:27,484 INFO L225 Difference]: With dead ends: 326 [2021-10-06 20:58:27,484 INFO L226 Difference]: Without dead ends: 316 [2021-10-06 20:58:27,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2291.6ms TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2021-10-06 20:58:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-06 20:58:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 162. [2021-10-06 20:58:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 3.093167701863354) internal successors, (498), 161 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 498 transitions. [2021-10-06 20:58:27,502 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 498 transitions. Word has length 15 [2021-10-06 20:58:27,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:27,502 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 498 transitions. [2021-10-06 20:58:27,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 498 transitions. [2021-10-06 20:58:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:27,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:27,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:27,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:27,716 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 [2021-10-06 20:58:27,716 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)] === [2021-10-06 20:58:27,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:27,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2014440353, now seen corresponding path program 19 times [2021-10-06 20:58:27,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:27,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232215911] [2021-10-06 20:58:27,718 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:58:27,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:27,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:27,720 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) [2021-10-06 20:58:27,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 20:58:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:58:28,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:28,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:28,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:29,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:29,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232215911] [2021-10-06 20:58:29,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232215911] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:29,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:29,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:29,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097375982] [2021-10-06 20:58:29,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:29,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:29,171 INFO L87 Difference]: Start difference. First operand 162 states and 498 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:31,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:31,086 INFO L93 Difference]: Finished difference Result 312 states and 765 transitions. [2021-10-06 20:58:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 20:58:31,087 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:31,097 INFO L225 Difference]: With dead ends: 312 [2021-10-06 20:58:31,098 INFO L226 Difference]: Without dead ends: 302 [2021-10-06 20:58:31,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1823.5ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-10-06 20:58:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-06 20:58:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 154. [2021-10-06 20:58:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.019607843137255) internal successors, (462), 153 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 462 transitions. [2021-10-06 20:58:31,111 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 462 transitions. Word has length 15 [2021-10-06 20:58:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:31,111 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 462 transitions. [2021-10-06 20:58:31,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 462 transitions. [2021-10-06 20:58:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 20:58:31,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:31,113 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:31,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-06 20:58:31,326 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 [2021-10-06 20:58:31,327 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)] === [2021-10-06 20:58:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1418084537, now seen corresponding path program 20 times [2021-10-06 20:58:31,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:31,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719370770] [2021-10-06 20:58:31,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:58:31,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:31,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:31,330 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) [2021-10-06 20:58:31,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 20:58:31,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:58:31,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:31,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 20:58:31,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:32,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:32,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:32,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719370770] [2021-10-06 20:58:32,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719370770] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:32,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:32,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:32,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454593562] [2021-10-06 20:58:32,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:32,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:32,797 INFO L87 Difference]: Start difference. First operand 154 states and 462 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:35,491 INFO L93 Difference]: Finished difference Result 269 states and 668 transitions. [2021-10-06 20:58:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 20:58:35,493 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 20:58:35,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:35,495 INFO L225 Difference]: With dead ends: 269 [2021-10-06 20:58:35,495 INFO L226 Difference]: Without dead ends: 254 [2021-10-06 20:58:35,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2506.6ms TimeCoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2021-10-06 20:58:35,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-06 20:58:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 144. [2021-10-06 20:58:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.958041958041958) internal successors, (423), 143 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 423 transitions. [2021-10-06 20:58:35,501 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 423 transitions. Word has length 15 [2021-10-06 20:58:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:35,501 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 423 transitions. [2021-10-06 20:58:35,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 423 transitions. [2021-10-06 20:58:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:35,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:35,503 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:35,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:35,716 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 [2021-10-06 20:58:35,717 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)] === [2021-10-06 20:58:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:35,717 INFO L82 PathProgramCache]: Analyzing trace with hash 162011596, now seen corresponding path program 3 times [2021-10-06 20:58:35,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:35,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38935795] [2021-10-06 20:58:35,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:35,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:35,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:35,720 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) [2021-10-06 20:58:35,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 20:58:36,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:58:36,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:36,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 20:58:36,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:36,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:36,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:36,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38935795] [2021-10-06 20:58:36,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38935795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:36,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:36,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:58:36,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560343507] [2021-10-06 20:58:36,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:36,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:36,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:36,819 INFO L87 Difference]: Start difference. First operand 144 states and 423 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:37,661 INFO L93 Difference]: Finished difference Result 241 states and 622 transitions. [2021-10-06 20:58:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:58:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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 [2021-10-06 20:58:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:37,664 INFO L225 Difference]: With dead ends: 241 [2021-10-06 20:58:37,664 INFO L226 Difference]: Without dead ends: 218 [2021-10-06 20:58:37,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 852.9ms TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:58:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-06 20:58:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 148. [2021-10-06 20:58:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.945578231292517) internal successors, (433), 147 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 433 transitions. [2021-10-06 20:58:37,670 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 433 transitions. Word has length 16 [2021-10-06 20:58:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:37,670 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 433 transitions. [2021-10-06 20:58:37,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 433 transitions. [2021-10-06 20:58:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:37,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:37,671 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:37,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:37,871 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 [2021-10-06 20:58:37,872 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)] === [2021-10-06 20:58:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:37,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1270131314, now seen corresponding path program 4 times [2021-10-06 20:58:37,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:37,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44964380] [2021-10-06 20:58:37,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:37,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:37,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:37,876 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) [2021-10-06 20:58:37,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 20:58:38,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:38,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:38,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 20:58:38,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:38,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:38,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:38,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44964380] [2021-10-06 20:58:38,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44964380] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:38,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:38,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:58:38,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627520932] [2021-10-06 20:58:38,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:38,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:38,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:38,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:38,976 INFO L87 Difference]: Start difference. First operand 148 states and 433 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:39,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:39,728 INFO L93 Difference]: Finished difference Result 237 states and 598 transitions. [2021-10-06 20:58:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 20:58:39,729 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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 [2021-10-06 20:58:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:39,730 INFO L225 Difference]: With dead ends: 237 [2021-10-06 20:58:39,731 INFO L226 Difference]: Without dead ends: 206 [2021-10-06 20:58:39,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 677.5ms TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-10-06 20:58:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-06 20:58:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 156. [2021-10-06 20:58:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.9419354838709677) internal successors, (456), 155 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 456 transitions. [2021-10-06 20:58:39,737 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 456 transitions. Word has length 16 [2021-10-06 20:58:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:39,737 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 456 transitions. [2021-10-06 20:58:39,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 456 transitions. [2021-10-06 20:58:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:39,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:39,739 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:39,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:39,952 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 [2021-10-06 20:58:39,953 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)] === [2021-10-06 20:58:39,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:39,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1604742706, now seen corresponding path program 5 times [2021-10-06 20:58:39,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:39,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711077240] [2021-10-06 20:58:39,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:58:39,956 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:39,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:39,957 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) [2021-10-06 20:58:39,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 20:58:40,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:58:40,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:40,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 20:58:40,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:40,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:40,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:40,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711077240] [2021-10-06 20:58:40,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711077240] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:40,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:40,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:58:40,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896367596] [2021-10-06 20:58:40,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:40,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:40,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:40,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:40,982 INFO L87 Difference]: Start difference. First operand 156 states and 456 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:41,811 INFO L93 Difference]: Finished difference Result 249 states and 641 transitions. [2021-10-06 20:58:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 20:58:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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 [2021-10-06 20:58:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:41,813 INFO L225 Difference]: With dead ends: 249 [2021-10-06 20:58:41,813 INFO L226 Difference]: Without dead ends: 218 [2021-10-06 20:58:41,813 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 780.2ms TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-10-06 20:58:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-06 20:58:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 158. [2021-10-06 20:58:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.949044585987261) internal successors, (463), 157 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 463 transitions. [2021-10-06 20:58:41,818 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 463 transitions. Word has length 16 [2021-10-06 20:58:41,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:41,818 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 463 transitions. [2021-10-06 20:58:41,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 463 transitions. [2021-10-06 20:58:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 20:58:41,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:41,819 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:41,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:42,022 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 [2021-10-06 20:58:42,023 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)] === [2021-10-06 20:58:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:42,024 INFO L82 PathProgramCache]: Analyzing trace with hash -976043406, now seen corresponding path program 6 times [2021-10-06 20:58:42,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:42,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167638879] [2021-10-06 20:58:42,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:58:42,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:42,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:42,027 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) [2021-10-06 20:58:42,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 20:58:42,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:58:42,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:42,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 20:58:42,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:42,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:43,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:43,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167638879] [2021-10-06 20:58:43,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167638879] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:43,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:43,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-06 20:58:43,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554573596] [2021-10-06 20:58:43,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 20:58:43,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:43,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 20:58:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-06 20:58:43,113 INFO L87 Difference]: Start difference. First operand 158 states and 463 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:44,044 INFO L93 Difference]: Finished difference Result 244 states and 640 transitions. [2021-10-06 20:58:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 20:58:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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 [2021-10-06 20:58:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:44,047 INFO L225 Difference]: With dead ends: 244 [2021-10-06 20:58:44,047 INFO L226 Difference]: Without dead ends: 222 [2021-10-06 20:58:44,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 916.6ms TimeCoverageRelationStatistics Valid=135, Invalid=285, Unknown=0, NotChecked=0, Total=420 [2021-10-06 20:58:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-06 20:58:44,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 158. [2021-10-06 20:58:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.968152866242038) internal successors, (466), 157 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 466 transitions. [2021-10-06 20:58:44,051 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 466 transitions. Word has length 16 [2021-10-06 20:58:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:44,052 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 466 transitions. [2021-10-06 20:58:44,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-10-06 20:58:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 466 transitions. [2021-10-06 20:58:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:44,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:44,053 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:44,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-06 20:58:44,255 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 [2021-10-06 20:58:44,255 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)] === [2021-10-06 20:58:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:44,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1448932991, now seen corresponding path program 4 times [2021-10-06 20:58:44,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:44,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842147702] [2021-10-06 20:58:44,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:44,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:44,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:44,259 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) [2021-10-06 20:58:44,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 20:58:44,711 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:44,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:44,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 20:58:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:45,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:45,402 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:45,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842147702] [2021-10-06 20:58:45,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842147702] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:45,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:45,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 20:58:45,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363103782] [2021-10-06 20:58:45,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 20:58:45,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 20:58:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-06 20:58:45,404 INFO L87 Difference]: Start difference. First operand 158 states and 466 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) 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) [2021-10-06 20:58:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:46,469 INFO L93 Difference]: Finished difference Result 263 states and 652 transitions. [2021-10-06 20:58:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-06 20:58:46,470 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) 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 [2021-10-06 20:58:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:46,473 INFO L225 Difference]: With dead ends: 263 [2021-10-06 20:58:46,473 INFO L226 Difference]: Without dead ends: 244 [2021-10-06 20:58:46,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1098.7ms TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2021-10-06 20:58:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-06 20:58:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 160. [2021-10-06 20:58:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.9874213836477987) internal successors, (475), 159 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 475 transitions. [2021-10-06 20:58:46,480 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 475 transitions. Word has length 17 [2021-10-06 20:58:46,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:46,480 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 475 transitions. [2021-10-06 20:58:46,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) 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) [2021-10-06 20:58:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 475 transitions. [2021-10-06 20:58:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:46,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:46,481 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:46,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:46,687 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 [2021-10-06 20:58:46,688 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)] === [2021-10-06 20:58:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:46,689 INFO L82 PathProgramCache]: Analyzing trace with hash 908636095, now seen corresponding path program 21 times [2021-10-06 20:58:46,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:46,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848371984] [2021-10-06 20:58:46,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:58:46,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:46,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:46,692 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) [2021-10-06 20:58:46,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 20:58:47,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 20:58:47,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:47,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 20:58:47,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:47,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:48,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:48,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848371984] [2021-10-06 20:58:48,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848371984] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:48,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:48,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:58:48,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477544736] [2021-10-06 20:58:48,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:58:48,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:58:48,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:48,947 INFO L87 Difference]: Start difference. First operand 160 states and 475 transitions. Second operand has 20 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) [2021-10-06 20:58:56,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:58:56,726 INFO L93 Difference]: Finished difference Result 360 states and 849 transitions. [2021-10-06 20:58:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 20:58:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 20:58:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:58:56,729 INFO L225 Difference]: With dead ends: 360 [2021-10-06 20:58:56,729 INFO L226 Difference]: Without dead ends: 340 [2021-10-06 20:58:56,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 7692.9ms TimeCoverageRelationStatistics Valid=544, Invalid=2536, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 20:58:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-06 20:58:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 190. [2021-10-06 20:58:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.867724867724868) internal successors, (542), 189 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:58:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 542 transitions. [2021-10-06 20:58:56,750 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 542 transitions. Word has length 17 [2021-10-06 20:58:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:58:56,750 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 542 transitions. [2021-10-06 20:58:56,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 20:58:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 542 transitions. [2021-10-06 20:58:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:58:56,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:58:56,752 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:58:56,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 20:58:56,965 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 [2021-10-06 20:58:56,965 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)] === [2021-10-06 20:58:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:58:56,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1650737931, now seen corresponding path program 22 times [2021-10-06 20:58:56,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:58:56,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464245238] [2021-10-06 20:58:56,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 20:58:56,967 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:58:56,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:58:56,969 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) [2021-10-06 20:58:56,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 20:58:57,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 20:58:57,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:58:57,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 20:58:57,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:58:58,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:58,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:58:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:58:59,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:58:59,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464245238] [2021-10-06 20:58:59,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464245238] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:58:59,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:58:59,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:58:59,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308174321] [2021-10-06 20:58:59,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:58:59,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:58:59,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:58:59,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:58:59,218 INFO L87 Difference]: Start difference. First operand 190 states and 542 transitions. Second operand has 20 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) [2021-10-06 20:59:08,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:08,070 INFO L93 Difference]: Finished difference Result 425 states and 1026 transitions. [2021-10-06 20:59:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 20:59:08,071 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 20:59:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:08,073 INFO L225 Difference]: With dead ends: 425 [2021-10-06 20:59:08,073 INFO L226 Difference]: Without dead ends: 410 [2021-10-06 20:59:08,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 8541.6ms TimeCoverageRelationStatistics Valid=814, Invalid=3092, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 20:59:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-06 20:59:08,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 206. [2021-10-06 20:59:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.9853658536585366) internal successors, (612), 205 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 612 transitions. [2021-10-06 20:59:08,082 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 612 transitions. Word has length 17 [2021-10-06 20:59:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:08,082 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 612 transitions. [2021-10-06 20:59:08,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 20:59:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 612 transitions. [2021-10-06 20:59:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:08,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:08,084 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:08,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-10-06 20:59:08,297 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 [2021-10-06 20:59:08,298 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)] === [2021-10-06 20:59:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:08,299 INFO L82 PathProgramCache]: Analyzing trace with hash -930048181, now seen corresponding path program 23 times [2021-10-06 20:59:08,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:08,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959102846] [2021-10-06 20:59:08,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 20:59:08,300 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:08,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:08,301 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) [2021-10-06 20:59:08,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 20:59:08,805 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 20:59:08,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:08,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 20:59:08,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:09,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:10,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:10,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959102846] [2021-10-06 20:59:10,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959102846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:10,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:10,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:10,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650491081] [2021-10-06 20:59:10,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:10,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:10,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:10,716 INFO L87 Difference]: Start difference. First operand 206 states and 612 transitions. Second operand has 20 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) [2021-10-06 20:59:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:18,964 INFO L93 Difference]: Finished difference Result 513 states and 1217 transitions. [2021-10-06 20:59:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 20:59:18,966 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 20:59:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:18,968 INFO L225 Difference]: With dead ends: 513 [2021-10-06 20:59:18,969 INFO L226 Difference]: Without dead ends: 498 [2021-10-06 20:59:18,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 8076.0ms TimeCoverageRelationStatistics Valid=840, Invalid=2942, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 20:59:18,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-06 20:59:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 214. [2021-10-06 20:59:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.0422535211267605) internal successors, (648), 213 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 648 transitions. [2021-10-06 20:59:18,978 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 648 transitions. Word has length 17 [2021-10-06 20:59:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:18,979 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 648 transitions. [2021-10-06 20:59:18,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 20:59:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 648 transitions. [2021-10-06 20:59:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:18,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:18,980 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:18,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:19,190 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 [2021-10-06 20:59:19,191 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)] === [2021-10-06 20:59:19,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash -902342551, now seen corresponding path program 24 times [2021-10-06 20:59:19,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:19,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553414896] [2021-10-06 20:59:19,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 20:59:19,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:19,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:19,194 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) [2021-10-06 20:59:19,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 20:59:19,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 20:59:19,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:19,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 20:59:19,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:20,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:21,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553414896] [2021-10-06 20:59:21,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553414896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:21,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:21,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:21,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842308967] [2021-10-06 20:59:21,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:21,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:21,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:21,517 INFO L87 Difference]: Start difference. First operand 214 states and 648 transitions. Second operand has 20 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) [2021-10-06 20:59:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:30,151 INFO L93 Difference]: Finished difference Result 475 states and 1157 transitions. [2021-10-06 20:59:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 20:59:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 20:59:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:30,155 INFO L225 Difference]: With dead ends: 475 [2021-10-06 20:59:30,155 INFO L226 Difference]: Without dead ends: 460 [2021-10-06 20:59:30,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 8192.8ms TimeCoverageRelationStatistics Valid=804, Invalid=3102, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 20:59:30,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-10-06 20:59:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 200. [2021-10-06 20:59:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.949748743718593) internal successors, (587), 199 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 587 transitions. [2021-10-06 20:59:30,164 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 587 transitions. Word has length 17 [2021-10-06 20:59:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:30,164 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 587 transitions. [2021-10-06 20:59:30,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 20:59:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 587 transitions. [2021-10-06 20:59:30,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:30,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:30,166 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:30,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-06 20:59:30,379 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 [2021-10-06 20:59:30,380 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)] === [2021-10-06 20:59:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash -758617847, now seen corresponding path program 25 times [2021-10-06 20:59:30,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:30,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689026873] [2021-10-06 20:59:30,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 20:59:30,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:30,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:30,383 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) [2021-10-06 20:59:30,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 20:59:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 20:59:30,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 20:59:30,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:31,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:32,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:32,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689026873] [2021-10-06 20:59:32,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689026873] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:32,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:32,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:32,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796405058] [2021-10-06 20:59:32,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:32,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:32,677 INFO L87 Difference]: Start difference. First operand 200 states and 587 transitions. Second operand has 20 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) [2021-10-06 20:59:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:40,182 INFO L93 Difference]: Finished difference Result 403 states and 973 transitions. [2021-10-06 20:59:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 20:59:40,183 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 20:59:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:40,185 INFO L225 Difference]: With dead ends: 403 [2021-10-06 20:59:40,185 INFO L226 Difference]: Without dead ends: 388 [2021-10-06 20:59:40,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 7335.1ms TimeCoverageRelationStatistics Valid=570, Invalid=2400, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 20:59:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-06 20:59:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 202. [2021-10-06 20:59:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.955223880597015) internal successors, (594), 201 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2021-10-06 20:59:40,194 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2021-10-06 20:59:40,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:40,194 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2021-10-06 20:59:40,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 20:59:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2021-10-06 20:59:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:40,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:40,196 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:40,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:40,410 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 [2021-10-06 20:59:40,411 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)] === [2021-10-06 20:59:40,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:40,411 INFO L82 PathProgramCache]: Analyzing trace with hash 780565127, now seen corresponding path program 26 times [2021-10-06 20:59:40,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:40,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658238266] [2021-10-06 20:59:40,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 20:59:40,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:40,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:40,414 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) [2021-10-06 20:59:40,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 20:59:41,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 20:59:41,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:41,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 20:59:41,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:41,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:42,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:42,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658238266] [2021-10-06 20:59:42,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658238266] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:42,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:42,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:42,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827243666] [2021-10-06 20:59:42,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:42,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:42,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:42,924 INFO L87 Difference]: Start difference. First operand 202 states and 594 transitions. Second operand has 20 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) [2021-10-06 20:59:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:50,030 INFO L93 Difference]: Finished difference Result 472 states and 1159 transitions. [2021-10-06 20:59:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 20:59:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 20:59:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:50,035 INFO L225 Difference]: With dead ends: 472 [2021-10-06 20:59:50,036 INFO L226 Difference]: Without dead ends: 462 [2021-10-06 20:59:50,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 6964.7ms TimeCoverageRelationStatistics Valid=691, Invalid=2389, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 20:59:50,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-06 20:59:50,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 212. [2021-10-06 20:59:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.028436018957346) internal successors, (639), 211 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 639 transitions. [2021-10-06 20:59:50,044 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 639 transitions. Word has length 17 [2021-10-06 20:59:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:50,044 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 639 transitions. [2021-10-06 20:59:50,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 20:59:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 639 transitions. [2021-10-06 20:59:50,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:50,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:50,045 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:50,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 20:59:50,246 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 [2021-10-06 20:59:50,246 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)] === [2021-10-06 20:59:50,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 20:59:50,247 INFO L82 PathProgramCache]: Analyzing trace with hash 808270757, now seen corresponding path program 27 times [2021-10-06 20:59:50,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 20:59:50,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123808160] [2021-10-06 20:59:50,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 20:59:50,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 20:59:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 20:59:50,250 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) [2021-10-06 20:59:50,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 20:59:50,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 20:59:50,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 20:59:50,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 20:59:50,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 20:59:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:51,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 20:59:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 20:59:52,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 20:59:52,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123808160] [2021-10-06 20:59:52,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123808160] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 20:59:52,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 20:59:52,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 20:59:52,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362004410] [2021-10-06 20:59:52,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 20:59:52,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 20:59:52,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 20:59:52,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 20:59:52,689 INFO L87 Difference]: Start difference. First operand 212 states and 639 transitions. Second operand has 20 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) [2021-10-06 20:59:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 20:59:59,932 INFO L93 Difference]: Finished difference Result 462 states and 1128 transitions. [2021-10-06 20:59:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 20:59:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 20:59:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 20:59:59,935 INFO L225 Difference]: With dead ends: 462 [2021-10-06 20:59:59,935 INFO L226 Difference]: Without dead ends: 452 [2021-10-06 20:59:59,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 7110.0ms TimeCoverageRelationStatistics Valid=649, Invalid=2657, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 20:59:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-06 20:59:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 202. [2021-10-06 20:59:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.955223880597015) internal successors, (594), 201 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 20:59:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2021-10-06 20:59:59,944 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2021-10-06 20:59:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 20:59:59,945 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2021-10-06 20:59:59,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 20:59:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2021-10-06 20:59:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 20:59:59,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 20:59:59,946 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 20:59:59,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:00,160 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 [2021-10-06 21:00:00,161 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)] === [2021-10-06 21:00:00,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:00,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1670713163, now seen corresponding path program 28 times [2021-10-06 21:00:00,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:00,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999818811] [2021-10-06 21:00:00,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:00:00,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:00,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:00,165 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) [2021-10-06 21:00:00,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:00:00,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:00:00,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:00,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:00:00,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:01,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:02,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:02,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999818811] [2021-10-06 21:00:02,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999818811] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:02,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:02,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:02,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647565778] [2021-10-06 21:00:02,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:02,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:02,527 INFO L87 Difference]: Start difference. First operand 202 states and 594 transitions. Second operand has 20 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) [2021-10-06 21:00:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:10,154 INFO L93 Difference]: Finished difference Result 398 states and 1002 transitions. [2021-10-06 21:00:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:00:10,156 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:00:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:10,158 INFO L225 Difference]: With dead ends: 398 [2021-10-06 21:00:10,159 INFO L226 Difference]: Without dead ends: 388 [2021-10-06 21:00:10,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 7471.8ms TimeCoverageRelationStatistics Valid=649, Invalid=2773, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:00:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-06 21:00:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 208. [2021-10-06 21:00:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9806763285024154) internal successors, (617), 207 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 617 transitions. [2021-10-06 21:00:10,169 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 617 transitions. Word has length 17 [2021-10-06 21:00:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:10,169 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 617 transitions. [2021-10-06 21:00:10,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:00:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 617 transitions. [2021-10-06 21:00:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:10,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:10,171 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:10,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:10,384 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 [2021-10-06 21:00:10,385 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)] === [2021-10-06 21:00:10,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:10,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1311165637, now seen corresponding path program 29 times [2021-10-06 21:00:10,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:10,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545751993] [2021-10-06 21:00:10,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:00:10,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:10,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:10,388 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) [2021-10-06 21:00:10,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:00:11,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:00:11,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:11,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:00:11,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:11,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:12,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:12,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545751993] [2021-10-06 21:00:12,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545751993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:12,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:12,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:12,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635448042] [2021-10-06 21:00:12,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:12,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:12,691 INFO L87 Difference]: Start difference. First operand 208 states and 617 transitions. Second operand has 20 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) [2021-10-06 21:00:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:17,922 INFO L93 Difference]: Finished difference Result 364 states and 889 transitions. [2021-10-06 21:00:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:00:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:00:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:17,925 INFO L225 Difference]: With dead ends: 364 [2021-10-06 21:00:17,925 INFO L226 Difference]: Without dead ends: 344 [2021-10-06 21:00:17,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 5123.8ms TimeCoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:00:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-06 21:00:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 222. [2021-10-06 21:00:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.8959276018099547) internal successors, (640), 221 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 640 transitions. [2021-10-06 21:00:17,932 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 640 transitions. Word has length 17 [2021-10-06 21:00:17,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:17,932 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 640 transitions. [2021-10-06 21:00:17,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:00:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 640 transitions. [2021-10-06 21:00:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:17,933 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:17,933 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:17,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:18,139 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 [2021-10-06 21:00:18,140 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)] === [2021-10-06 21:00:18,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:18,141 INFO L82 PathProgramCache]: Analyzing trace with hash -744069699, now seen corresponding path program 30 times [2021-10-06 21:00:18,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:18,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459999741] [2021-10-06 21:00:18,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:00:18,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:18,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:18,143 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) [2021-10-06 21:00:18,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:00:18,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:00:18,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:18,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:00:18,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:19,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:20,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:20,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459999741] [2021-10-06 21:00:20,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459999741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:20,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:20,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:20,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501201091] [2021-10-06 21:00:20,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:20,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:20,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:20,734 INFO L87 Difference]: Start difference. First operand 222 states and 640 transitions. Second operand has 20 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) [2021-10-06 21:00:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:33,193 INFO L93 Difference]: Finished difference Result 453 states and 1102 transitions. [2021-10-06 21:00:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:00:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:00:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:33,197 INFO L225 Difference]: With dead ends: 453 [2021-10-06 21:00:33,197 INFO L226 Difference]: Without dead ends: 438 [2021-10-06 21:00:33,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 12247.6ms TimeCoverageRelationStatistics Valid=734, Invalid=2458, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:00:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-06 21:00:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 242. [2021-10-06 21:00:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 3.029045643153527) internal successors, (730), 241 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 730 transitions. [2021-10-06 21:00:33,204 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 730 transitions. Word has length 17 [2021-10-06 21:00:33,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:33,204 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 730 transitions. [2021-10-06 21:00:33,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:00:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 730 transitions. [2021-10-06 21:00:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:33,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:33,205 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:33,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:33,418 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 [2021-10-06 21:00:33,419 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)] === [2021-10-06 21:00:33,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:33,419 INFO L82 PathProgramCache]: Analyzing trace with hash 970111485, now seen corresponding path program 31 times [2021-10-06 21:00:33,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:33,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217538421] [2021-10-06 21:00:33,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:00:33,420 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:33,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:33,422 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) [2021-10-06 21:00:33,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:00:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:00:34,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:00:34,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:34,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:34,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:35,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:35,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217538421] [2021-10-06 21:00:35,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217538421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:35,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:35,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:35,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719797709] [2021-10-06 21:00:35,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:35,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:35,934 INFO L87 Difference]: Start difference. First operand 242 states and 730 transitions. Second operand has 20 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) [2021-10-06 21:00:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:44,641 INFO L93 Difference]: Finished difference Result 531 states and 1274 transitions. [2021-10-06 21:00:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:00:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:00:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:44,645 INFO L225 Difference]: With dead ends: 531 [2021-10-06 21:00:44,645 INFO L226 Difference]: Without dead ends: 516 [2021-10-06 21:00:44,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 8476.1ms TimeCoverageRelationStatistics Valid=786, Invalid=2406, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:00:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-06 21:00:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 254. [2021-10-06 21:00:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 3.0988142292490117) internal successors, (784), 253 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 784 transitions. [2021-10-06 21:00:44,657 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 784 transitions. Word has length 17 [2021-10-06 21:00:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:44,658 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 784 transitions. [2021-10-06 21:00:44,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:00:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 784 transitions. [2021-10-06 21:00:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:44,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:44,659 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:44,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:00:44,872 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 [2021-10-06 21:00:44,873 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)] === [2021-10-06 21:00:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:44,874 INFO L82 PathProgramCache]: Analyzing trace with hash 997817115, now seen corresponding path program 32 times [2021-10-06 21:00:44,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:44,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313588264] [2021-10-06 21:00:44,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:00:44,875 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:44,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:44,877 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) [2021-10-06 21:00:44,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:00:45,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:00:45,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:45,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:00:45,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:46,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:47,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:47,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313588264] [2021-10-06 21:00:47,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313588264] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:47,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:47,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:47,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614115792] [2021-10-06 21:00:47,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:47,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:47,548 INFO L87 Difference]: Start difference. First operand 254 states and 784 transitions. Second operand has 20 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) [2021-10-06 21:00:56,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:00:56,647 INFO L93 Difference]: Finished difference Result 478 states and 1192 transitions. [2021-10-06 21:00:56,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:00:56,648 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:00:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:00:56,651 INFO L225 Difference]: With dead ends: 478 [2021-10-06 21:00:56,652 INFO L226 Difference]: Without dead ends: 468 [2021-10-06 21:00:56,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 8878.2ms TimeCoverageRelationStatistics Valid=741, Invalid=2339, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:00:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-06 21:00:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 246. [2021-10-06 21:00:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.053061224489796) internal successors, (748), 245 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:00:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 748 transitions. [2021-10-06 21:00:56,659 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 748 transitions. Word has length 17 [2021-10-06 21:00:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:00:56,660 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 748 transitions. [2021-10-06 21:00:56,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:00:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 748 transitions. [2021-10-06 21:00:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:00:56,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:00:56,661 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:00:56,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-06 21:00:56,876 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 [2021-10-06 21:00:56,877 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)] === [2021-10-06 21:00:56,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:00:56,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1141541819, now seen corresponding path program 33 times [2021-10-06 21:00:56,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:00:56,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195966267] [2021-10-06 21:00:56,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:00:56,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:00:56,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:00:56,880 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) [2021-10-06 21:00:56,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:00:57,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:00:57,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:00:57,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:00:57,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:00:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:58,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:00:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:00:59,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:00:59,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195966267] [2021-10-06 21:00:59,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195966267] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:00:59,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:00:59,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:00:59,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299357930] [2021-10-06 21:00:59,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:00:59,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:00:59,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:00:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:00:59,610 INFO L87 Difference]: Start difference. First operand 246 states and 748 transitions. Second operand has 20 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) [2021-10-06 21:01:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:07,606 INFO L93 Difference]: Finished difference Result 441 states and 1090 transitions. [2021-10-06 21:01:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:01:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:01:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:07,609 INFO L225 Difference]: With dead ends: 441 [2021-10-06 21:01:07,610 INFO L226 Difference]: Without dead ends: 426 [2021-10-06 21:01:07,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 7937.0ms TimeCoverageRelationStatistics Valid=558, Invalid=2304, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:01:07,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-10-06 21:01:07,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 250. [2021-10-06 21:01:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.0481927710843375) internal successors, (759), 249 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 759 transitions. [2021-10-06 21:01:07,619 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 759 transitions. Word has length 17 [2021-10-06 21:01:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:07,619 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 759 transitions. [2021-10-06 21:01:07,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:01:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 759 transitions. [2021-10-06 21:01:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:07,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:07,621 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:07,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-06 21:01:07,837 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 [2021-10-06 21:01:07,837 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)] === [2021-10-06 21:01:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:07,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1614242503, now seen corresponding path program 34 times [2021-10-06 21:01:07,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:07,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660048226] [2021-10-06 21:01:07,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:01:07,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:07,840 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) [2021-10-06 21:01:07,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:01:08,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:01:08,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:08,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:01:08,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:09,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:10,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:10,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660048226] [2021-10-06 21:01:10,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660048226] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:10,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:10,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:10,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799423143] [2021-10-06 21:01:10,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:10,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:10,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:10,551 INFO L87 Difference]: Start difference. First operand 250 states and 759 transitions. Second operand has 20 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) [2021-10-06 21:01:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:18,790 INFO L93 Difference]: Finished difference Result 524 states and 1293 transitions. [2021-10-06 21:01:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:01:18,791 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:01:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:18,794 INFO L225 Difference]: With dead ends: 524 [2021-10-06 21:01:18,794 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:01:18,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 8057.2ms TimeCoverageRelationStatistics Valid=789, Invalid=2403, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:01:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:01:18,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 258. [2021-10-06 21:01:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.1206225680933852) internal successors, (802), 257 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 802 transitions. [2021-10-06 21:01:18,801 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 802 transitions. Word has length 17 [2021-10-06 21:01:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:18,801 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 802 transitions. [2021-10-06 21:01:18,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:01:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 802 transitions. [2021-10-06 21:01:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:18,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:18,803 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:18,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:19,005 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 [2021-10-06 21:01:19,005 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)] === [2021-10-06 21:01:19,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:19,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1586536873, now seen corresponding path program 35 times [2021-10-06 21:01:19,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:19,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020651268] [2021-10-06 21:01:19,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:01:19,007 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:19,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:19,008 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) [2021-10-06 21:01:19,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:01:19,804 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:01:19,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:19,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:01:19,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:20,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:21,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:21,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020651268] [2021-10-06 21:01:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020651268] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:21,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:21,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:21,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958924647] [2021-10-06 21:01:21,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:21,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:21,693 INFO L87 Difference]: Start difference. First operand 258 states and 802 transitions. Second operand has 20 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) [2021-10-06 21:01:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:30,703 INFO L93 Difference]: Finished difference Result 524 states and 1284 transitions. [2021-10-06 21:01:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:01:30,704 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:01:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:30,708 INFO L225 Difference]: With dead ends: 524 [2021-10-06 21:01:30,708 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:01:30,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 8547.3ms TimeCoverageRelationStatistics Valid=768, Invalid=2772, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:01:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:01:30,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 252. [2021-10-06 21:01:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 3.087649402390438) internal successors, (775), 251 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 775 transitions. [2021-10-06 21:01:30,717 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 775 transitions. Word has length 17 [2021-10-06 21:01:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:30,717 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 775 transitions. [2021-10-06 21:01:30,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:01:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 775 transitions. [2021-10-06 21:01:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:30,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:30,718 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:30,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:30,919 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 [2021-10-06 21:01:30,919 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)] === [2021-10-06 21:01:30,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:30,920 INFO L82 PathProgramCache]: Analyzing trace with hash -724094467, now seen corresponding path program 36 times [2021-10-06 21:01:30,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:30,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439288019] [2021-10-06 21:01:30,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:01:30,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:30,923 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) [2021-10-06 21:01:30,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:01:31,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:01:31,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:31,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:01:31,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:32,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:33,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:33,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439288019] [2021-10-06 21:01:33,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439288019] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:33,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:33,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:33,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893989175] [2021-10-06 21:01:33,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:33,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:33,756 INFO L87 Difference]: Start difference. First operand 252 states and 775 transitions. Second operand has 20 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) [2021-10-06 21:01:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:42,149 INFO L93 Difference]: Finished difference Result 460 states and 1172 transitions. [2021-10-06 21:01:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:01:42,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:01:42,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:42,153 INFO L225 Difference]: With dead ends: 460 [2021-10-06 21:01:42,153 INFO L226 Difference]: Without dead ends: 450 [2021-10-06 21:01:42,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 8187.5ms TimeCoverageRelationStatistics Valid=614, Invalid=2578, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:01:42,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-06 21:01:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 256. [2021-10-06 21:01:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.1098039215686275) internal successors, (793), 255 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 793 transitions. [2021-10-06 21:01:42,161 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 793 transitions. Word has length 17 [2021-10-06 21:01:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:42,162 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 793 transitions. [2021-10-06 21:01:42,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:01:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 793 transitions. [2021-10-06 21:01:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:42,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:42,163 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:42,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:42,376 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 [2021-10-06 21:01:42,377 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)] === [2021-10-06 21:01:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:42,377 INFO L82 PathProgramCache]: Analyzing trace with hash -534043267, now seen corresponding path program 37 times [2021-10-06 21:01:42,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:42,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344016650] [2021-10-06 21:01:42,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:01:42,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:42,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:42,380 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) [2021-10-06 21:01:42,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:01:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:01:43,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:01:43,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:43,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:44,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:44,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344016650] [2021-10-06 21:01:44,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344016650] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:44,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:44,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:44,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241414828] [2021-10-06 21:01:44,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:44,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:44,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:44,958 INFO L87 Difference]: Start difference. First operand 256 states and 793 transitions. Second operand has 20 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) [2021-10-06 21:01:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:01:49,731 INFO L93 Difference]: Finished difference Result 401 states and 1045 transitions. [2021-10-06 21:01:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:01:49,732 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:01:49,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:01:49,734 INFO L225 Difference]: With dead ends: 401 [2021-10-06 21:01:49,735 INFO L226 Difference]: Without dead ends: 386 [2021-10-06 21:01:49,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 4747.9ms TimeCoverageRelationStatistics Valid=341, Invalid=1381, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:01:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-06 21:01:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 256. [2021-10-06 21:01:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 3.1098039215686275) internal successors, (793), 255 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:01:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 793 transitions. [2021-10-06 21:01:49,740 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 793 transitions. Word has length 17 [2021-10-06 21:01:49,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:01:49,741 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 793 transitions. [2021-10-06 21:01:49,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:01:49,741 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 793 transitions. [2021-10-06 21:01:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:01:49,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:01:49,742 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:01:49,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:01:49,954 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 [2021-10-06 21:01:49,955 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)] === [2021-10-06 21:01:49,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:01:49,956 INFO L82 PathProgramCache]: Analyzing trace with hash -124837507, now seen corresponding path program 38 times [2021-10-06 21:01:49,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:01:49,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359065550] [2021-10-06 21:01:49,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:01:49,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:01:49,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:01:49,959 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) [2021-10-06 21:01:49,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:01:50,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:01:50,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:01:50,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:01:50,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:01:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:51,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:01:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:01:52,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:01:52,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359065550] [2021-10-06 21:01:52,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359065550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:01:52,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:01:52,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:01:52,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061802365] [2021-10-06 21:01:52,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:01:52,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:01:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:01:52,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:01:52,708 INFO L87 Difference]: Start difference. First operand 256 states and 793 transitions. Second operand has 20 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) [2021-10-06 21:02:00,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:00,426 INFO L93 Difference]: Finished difference Result 540 states and 1373 transitions. [2021-10-06 21:02:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:02:00,427 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:02:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:00,430 INFO L225 Difference]: With dead ends: 540 [2021-10-06 21:02:00,430 INFO L226 Difference]: Without dead ends: 530 [2021-10-06 21:02:00,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 7677.9ms TimeCoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:02:00,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-06 21:02:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 276. [2021-10-06 21:02:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.210909090909091) internal successors, (883), 275 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 883 transitions. [2021-10-06 21:02:00,439 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 883 transitions. Word has length 17 [2021-10-06 21:02:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:00,440 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 883 transitions. [2021-10-06 21:02:00,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:02:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 883 transitions. [2021-10-06 21:02:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:02:00,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:00,441 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:00,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:00,646 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 [2021-10-06 21:02:00,646 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)] === [2021-10-06 21:02:00,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:00,647 INFO L82 PathProgramCache]: Analyzing trace with hash -97131877, now seen corresponding path program 39 times [2021-10-06 21:02:00,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:00,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641515569] [2021-10-06 21:02:00,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:02:00,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:00,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:00,650 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) [2021-10-06 21:02:00,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:02:01,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:02:01,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:01,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:02:01,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:02,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:03,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:03,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641515569] [2021-10-06 21:02:03,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641515569] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:03,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:03,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:02:03,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830154535] [2021-10-06 21:02:03,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:02:03,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:03,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:02:03,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:02:03,564 INFO L87 Difference]: Start difference. First operand 276 states and 883 transitions. Second operand has 20 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) [2021-10-06 21:02:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:11,253 INFO L93 Difference]: Finished difference Result 538 states and 1360 transitions. [2021-10-06 21:02:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:02:11,254 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:02:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:11,257 INFO L225 Difference]: With dead ends: 538 [2021-10-06 21:02:11,257 INFO L226 Difference]: Without dead ends: 528 [2021-10-06 21:02:11,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 7527.6ms TimeCoverageRelationStatistics Valid=633, Invalid=2447, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:02:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-06 21:02:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 266. [2021-10-06 21:02:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.1622641509433964) internal successors, (838), 265 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 838 transitions. [2021-10-06 21:02:11,265 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 838 transitions. Word has length 17 [2021-10-06 21:02:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:11,265 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 838 transitions. [2021-10-06 21:02:11,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:02:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 838 transitions. [2021-10-06 21:02:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:02:11,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:11,266 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:11,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-06 21:02:11,466 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 [2021-10-06 21:02:11,467 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)] === [2021-10-06 21:02:11,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash 765310529, now seen corresponding path program 40 times [2021-10-06 21:02:11,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:11,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668919746] [2021-10-06 21:02:11,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:02:11,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:11,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:11,470 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) [2021-10-06 21:02:11,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:02:12,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:02:12,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:12,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:02:12,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:12,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:14,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:14,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668919746] [2021-10-06 21:02:14,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668919746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:14,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:14,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:02:14,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007432347] [2021-10-06 21:02:14,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:02:14,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:02:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:02:14,336 INFO L87 Difference]: Start difference. First operand 266 states and 838 transitions. Second operand has 20 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) [2021-10-06 21:02:22,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:22,773 INFO L93 Difference]: Finished difference Result 490 states and 1258 transitions. [2021-10-06 21:02:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:02:22,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:02:22,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:22,777 INFO L225 Difference]: With dead ends: 490 [2021-10-06 21:02:22,777 INFO L226 Difference]: Without dead ends: 480 [2021-10-06 21:02:22,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 8225.7ms TimeCoverageRelationStatistics Valid=641, Invalid=2899, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:02:22,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-10-06 21:02:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 270. [2021-10-06 21:02:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.1821561338289963) internal successors, (856), 269 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 856 transitions. [2021-10-06 21:02:22,786 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 856 transitions. Word has length 17 [2021-10-06 21:02:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:22,786 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 856 transitions. [2021-10-06 21:02:22,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:02:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 856 transitions. [2021-10-06 21:02:22,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:02:22,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:22,788 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:22,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:22,994 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 [2021-10-06 21:02:22,995 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)] === [2021-10-06 21:02:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -873357955, now seen corresponding path program 41 times [2021-10-06 21:02:22,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:22,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93939029] [2021-10-06 21:02:22,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:02:22,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:22,998 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) [2021-10-06 21:02:23,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:02:23,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:02:23,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:23,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:02:23,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:24,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:25,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:25,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93939029] [2021-10-06 21:02:25,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93939029] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:25,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:25,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:02:25,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903778770] [2021-10-06 21:02:25,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:02:25,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:25,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:02:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:02:25,598 INFO L87 Difference]: Start difference. First operand 270 states and 856 transitions. Second operand has 20 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) [2021-10-06 21:02:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:33,481 INFO L93 Difference]: Finished difference Result 509 states and 1296 transitions. [2021-10-06 21:02:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:02:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:02:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:33,485 INFO L225 Difference]: With dead ends: 509 [2021-10-06 21:02:33,485 INFO L226 Difference]: Without dead ends: 494 [2021-10-06 21:02:33,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 7647.4ms TimeCoverageRelationStatistics Valid=603, Invalid=2367, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:02:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-10-06 21:02:33,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 276. [2021-10-06 21:02:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.210909090909091) internal successors, (883), 275 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 883 transitions. [2021-10-06 21:02:33,492 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 883 transitions. Word has length 17 [2021-10-06 21:02:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:33,492 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 883 transitions. [2021-10-06 21:02:33,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:02:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 883 transitions. [2021-10-06 21:02:33,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:02:33,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:33,493 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:33,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:33,695 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 [2021-10-06 21:02:33,696 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)] === [2021-10-06 21:02:33,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:33,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1731221339, now seen corresponding path program 42 times [2021-10-06 21:02:33,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:33,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892929372] [2021-10-06 21:02:33,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:02:33,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:33,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:33,700 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) [2021-10-06 21:02:33,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:02:34,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:02:34,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:34,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:02:34,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:35,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:36,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:36,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892929372] [2021-10-06 21:02:36,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892929372] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:36,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:36,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:02:36,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400471337] [2021-10-06 21:02:36,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:02:36,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:02:36,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:02:36,528 INFO L87 Difference]: Start difference. First operand 276 states and 883 transitions. Second operand has 20 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) [2021-10-06 21:02:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:43,841 INFO L93 Difference]: Finished difference Result 428 states and 1145 transitions. [2021-10-06 21:02:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:02:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:02:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:43,845 INFO L225 Difference]: With dead ends: 428 [2021-10-06 21:02:43,845 INFO L226 Difference]: Without dead ends: 418 [2021-10-06 21:02:43,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 7053.9ms TimeCoverageRelationStatistics Valid=514, Invalid=2242, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:02:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-06 21:02:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 282. [2021-10-06 21:02:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 3.1743772241992882) internal successors, (892), 281 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 892 transitions. [2021-10-06 21:02:43,853 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 892 transitions. Word has length 17 [2021-10-06 21:02:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:43,853 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 892 transitions. [2021-10-06 21:02:43,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:02:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 892 transitions. [2021-10-06 21:02:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:02:43,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:43,854 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:43,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:02:44,054 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 [2021-10-06 21:02:44,055 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)] === [2021-10-06 21:02:44,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:44,056 INFO L82 PathProgramCache]: Analyzing trace with hash -83050679, now seen corresponding path program 43 times [2021-10-06 21:02:44,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:44,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322782265] [2021-10-06 21:02:44,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:02:44,057 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:44,058 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) [2021-10-06 21:02:44,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:02:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:02:45,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:02:45,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:45,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:47,007 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:47,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322782265] [2021-10-06 21:02:47,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322782265] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:47,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:47,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:02:47,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081695933] [2021-10-06 21:02:47,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:02:47,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:02:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:02:47,009 INFO L87 Difference]: Start difference. First operand 282 states and 892 transitions. Second operand has 20 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) [2021-10-06 21:02:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:02:55,826 INFO L93 Difference]: Finished difference Result 511 states and 1363 transitions. [2021-10-06 21:02:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:02:55,828 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:02:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:02:55,831 INFO L225 Difference]: With dead ends: 511 [2021-10-06 21:02:55,831 INFO L226 Difference]: Without dead ends: 496 [2021-10-06 21:02:55,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 8829.3ms TimeCoverageRelationStatistics Valid=393, Invalid=1329, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:02:55,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-06 21:02:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 316. [2021-10-06 21:02:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.2634920634920634) internal successors, (1028), 315 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:02:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1028 transitions. [2021-10-06 21:02:55,842 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1028 transitions. Word has length 17 [2021-10-06 21:02:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:02:55,842 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1028 transitions. [2021-10-06 21:02:55,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:02:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1028 transitions. [2021-10-06 21:02:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:02:55,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:02:55,843 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:02:55,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-06 21:02:56,050 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 [2021-10-06 21:02:56,051 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)] === [2021-10-06 21:02:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:02:56,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1456132295, now seen corresponding path program 44 times [2021-10-06 21:02:56,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:02:56,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587802712] [2021-10-06 21:02:56,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:02:56,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:02:56,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:02:56,054 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) [2021-10-06 21:02:56,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:02:57,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:02:57,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:02:57,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:02:57,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:02:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:57,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:02:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:02:58,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:02:58,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587802712] [2021-10-06 21:02:58,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587802712] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:02:58,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:02:58,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:02:58,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376707923] [2021-10-06 21:02:58,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:02:58,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:02:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:02:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:02:58,847 INFO L87 Difference]: Start difference. First operand 316 states and 1028 transitions. Second operand has 20 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) [2021-10-06 21:03:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:06,378 INFO L93 Difference]: Finished difference Result 639 states and 1655 transitions. [2021-10-06 21:03:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:03:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:03:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:06,383 INFO L225 Difference]: With dead ends: 639 [2021-10-06 21:03:06,384 INFO L226 Difference]: Without dead ends: 624 [2021-10-06 21:03:06,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 7011.0ms TimeCoverageRelationStatistics Valid=656, Invalid=1794, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:03:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-06 21:03:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 334. [2021-10-06 21:03:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 3.33033033033033) internal successors, (1109), 333 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1109 transitions. [2021-10-06 21:03:06,394 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1109 transitions. Word has length 17 [2021-10-06 21:03:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:06,394 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 1109 transitions. [2021-10-06 21:03:06,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:03:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1109 transitions. [2021-10-06 21:03:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:03:06,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:06,396 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:06,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:06,596 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 [2021-10-06 21:03:06,597 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)] === [2021-10-06 21:03:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1483837925, now seen corresponding path program 45 times [2021-10-06 21:03:06,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:06,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107457656] [2021-10-06 21:03:06,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:03:06,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:06,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:06,600 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) [2021-10-06 21:03:06,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:03:07,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:03:07,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:03:07,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:08,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:09,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:09,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107457656] [2021-10-06 21:03:09,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107457656] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:09,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:09,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:03:09,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927002875] [2021-10-06 21:03:09,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:03:09,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:09,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:03:09,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:03:09,714 INFO L87 Difference]: Start difference. First operand 334 states and 1109 transitions. Second operand has 20 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) [2021-10-06 21:03:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:15,967 INFO L93 Difference]: Finished difference Result 608 states and 1599 transitions. [2021-10-06 21:03:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:03:15,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:03:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:15,971 INFO L225 Difference]: With dead ends: 608 [2021-10-06 21:03:15,971 INFO L226 Difference]: Without dead ends: 598 [2021-10-06 21:03:15,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 6153.2ms TimeCoverageRelationStatistics Valid=514, Invalid=1466, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:03:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-06 21:03:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 328. [2021-10-06 21:03:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.308868501529052) internal successors, (1082), 327 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1082 transitions. [2021-10-06 21:03:15,984 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1082 transitions. Word has length 17 [2021-10-06 21:03:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:15,984 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1082 transitions. [2021-10-06 21:03:15,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:03:15,985 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1082 transitions. [2021-10-06 21:03:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:03:15,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:15,986 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:16,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:16,195 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 [2021-10-06 21:03:16,196 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)] === [2021-10-06 21:03:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:16,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1516958473, now seen corresponding path program 46 times [2021-10-06 21:03:16,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:16,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766475394] [2021-10-06 21:03:16,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:03:16,197 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:16,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:16,199 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) [2021-10-06 21:03:16,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:03:17,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:03:17,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:17,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:03:17,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:17,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:19,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:19,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766475394] [2021-10-06 21:03:19,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766475394] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:19,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:19,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:03:19,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599501724] [2021-10-06 21:03:19,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:03:19,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:03:19,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:03:19,311 INFO L87 Difference]: Start difference. First operand 328 states and 1082 transitions. Second operand has 20 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) [2021-10-06 21:03:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:26,877 INFO L93 Difference]: Finished difference Result 582 states and 1569 transitions. [2021-10-06 21:03:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:03:26,879 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:03:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:26,880 INFO L225 Difference]: With dead ends: 582 [2021-10-06 21:03:26,880 INFO L226 Difference]: Without dead ends: 572 [2021-10-06 21:03:26,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 7247.3ms TimeCoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:03:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-06 21:03:26,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 340. [2021-10-06 21:03:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.3510324483775813) internal successors, (1136), 339 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1136 transitions. [2021-10-06 21:03:26,889 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1136 transitions. Word has length 17 [2021-10-06 21:03:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:26,889 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1136 transitions. [2021-10-06 21:03:26,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:03:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1136 transitions. [2021-10-06 21:03:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:03:26,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:26,891 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:26,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:27,092 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 [2021-10-06 21:03:27,093 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)] === [2021-10-06 21:03:27,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:27,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1063827639, now seen corresponding path program 47 times [2021-10-06 21:03:27,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:27,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080252294] [2021-10-06 21:03:27,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:03:27,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:27,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:27,096 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) [2021-10-06 21:03:27,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:03:28,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:03:28,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:28,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:03:28,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:28,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:30,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:30,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080252294] [2021-10-06 21:03:30,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080252294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:30,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:30,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:03:30,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271054967] [2021-10-06 21:03:30,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:03:30,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:03:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:03:30,122 INFO L87 Difference]: Start difference. First operand 340 states and 1136 transitions. Second operand has 20 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) [2021-10-06 21:03:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:36,538 INFO L93 Difference]: Finished difference Result 650 states and 1750 transitions. [2021-10-06 21:03:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:03:36,539 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:03:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:36,541 INFO L225 Difference]: With dead ends: 650 [2021-10-06 21:03:36,541 INFO L226 Difference]: Without dead ends: 640 [2021-10-06 21:03:36,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 6224.7ms TimeCoverageRelationStatistics Valid=508, Invalid=1298, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:03:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-10-06 21:03:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 356. [2021-10-06 21:03:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.4028169014084506) internal successors, (1208), 355 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1208 transitions. [2021-10-06 21:03:36,552 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1208 transitions. Word has length 17 [2021-10-06 21:03:36,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:36,552 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1208 transitions. [2021-10-06 21:03:36,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:03:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1208 transitions. [2021-10-06 21:03:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:03:36,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:36,553 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:36,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:36,753 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 [2021-10-06 21:03:36,754 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)] === [2021-10-06 21:03:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:36,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1948686965, now seen corresponding path program 48 times [2021-10-06 21:03:36,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:36,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871520407] [2021-10-06 21:03:36,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:03:36,756 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:36,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:36,757 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) [2021-10-06 21:03:36,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:03:37,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:03:37,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:37,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:03:37,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:38,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:39,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:39,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871520407] [2021-10-06 21:03:39,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871520407] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:39,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:39,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:03:39,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358019912] [2021-10-06 21:03:39,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:03:39,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:39,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:03:39,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:03:39,968 INFO L87 Difference]: Start difference. First operand 356 states and 1208 transitions. Second operand has 20 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) [2021-10-06 21:03:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:47,587 INFO L93 Difference]: Finished difference Result 554 states and 1557 transitions. [2021-10-06 21:03:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:03:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:03:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:47,591 INFO L225 Difference]: With dead ends: 554 [2021-10-06 21:03:47,591 INFO L226 Difference]: Without dead ends: 544 [2021-10-06 21:03:47,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 7235.1ms TimeCoverageRelationStatistics Valid=478, Invalid=1684, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:03:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-06 21:03:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 356. [2021-10-06 21:03:47,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.4028169014084506) internal successors, (1208), 355 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1208 transitions. [2021-10-06 21:03:47,600 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1208 transitions. Word has length 17 [2021-10-06 21:03:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:47,600 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1208 transitions. [2021-10-06 21:03:47,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:03:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1208 transitions. [2021-10-06 21:03:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:03:47,602 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:47,602 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:47,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-06 21:03:47,810 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 [2021-10-06 21:03:47,811 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)] === [2021-10-06 21:03:47,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:47,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1758635765, now seen corresponding path program 49 times [2021-10-06 21:03:47,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:47,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065551042] [2021-10-06 21:03:47,812 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:03:47,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:47,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:47,815 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) [2021-10-06 21:03:47,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:03:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:03:48,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:03:48,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:49,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:50,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:50,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065551042] [2021-10-06 21:03:50,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065551042] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:50,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:50,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:03:50,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042134150] [2021-10-06 21:03:50,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:03:50,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:03:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:03:50,698 INFO L87 Difference]: Start difference. First operand 356 states and 1208 transitions. Second operand has 20 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) [2021-10-06 21:03:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:03:55,199 INFO L93 Difference]: Finished difference Result 519 states and 1487 transitions. [2021-10-06 21:03:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:03:55,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:03:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:03:55,201 INFO L225 Difference]: With dead ends: 519 [2021-10-06 21:03:55,201 INFO L226 Difference]: Without dead ends: 504 [2021-10-06 21:03:55,201 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 4485.6ms TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:03:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-06 21:03:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 356. [2021-10-06 21:03:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.4028169014084506) internal successors, (1208), 355 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:03:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1208 transitions. [2021-10-06 21:03:55,209 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1208 transitions. Word has length 17 [2021-10-06 21:03:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:03:55,209 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1208 transitions. [2021-10-06 21:03:55,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:03:55,209 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1208 transitions. [2021-10-06 21:03:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:03:55,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:03:55,210 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:03:55,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:03:55,410 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 [2021-10-06 21:03:55,411 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)] === [2021-10-06 21:03:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:03:55,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1349430005, now seen corresponding path program 50 times [2021-10-06 21:03:55,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:03:55,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599001720] [2021-10-06 21:03:55,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:03:55,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:03:55,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:03:55,414 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) [2021-10-06 21:03:55,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:03:56,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:03:56,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:03:56,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:03:56,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:03:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:57,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:03:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:03:58,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:03:58,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599001720] [2021-10-06 21:03:58,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599001720] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:03:58,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:03:58,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:03:58,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496371625] [2021-10-06 21:03:58,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:03:58,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:03:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:03:58,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:03:58,256 INFO L87 Difference]: Start difference. First operand 356 states and 1208 transitions. Second operand has 20 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) [2021-10-06 21:04:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:06,457 INFO L93 Difference]: Finished difference Result 704 states and 1846 transitions. [2021-10-06 21:04:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:04:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:04:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:06,461 INFO L225 Difference]: With dead ends: 704 [2021-10-06 21:04:06,461 INFO L226 Difference]: Without dead ends: 684 [2021-10-06 21:04:06,461 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 7581.5ms TimeCoverageRelationStatistics Valid=802, Invalid=2390, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:04:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-06 21:04:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 372. [2021-10-06 21:04:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.463611859838275) internal successors, (1285), 371 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1285 transitions. [2021-10-06 21:04:06,477 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1285 transitions. Word has length 17 [2021-10-06 21:04:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:06,477 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 1285 transitions. [2021-10-06 21:04:06,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:04:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1285 transitions. [2021-10-06 21:04:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:04:06,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:06,478 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:06,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:06,678 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 [2021-10-06 21:04:06,679 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)] === [2021-10-06 21:04:06,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:06,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1321724375, now seen corresponding path program 51 times [2021-10-06 21:04:06,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:06,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811783007] [2021-10-06 21:04:06,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:04:06,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:06,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:06,685 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) [2021-10-06 21:04:06,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:04:07,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:04:07,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:07,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:04:07,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:08,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:09,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:09,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811783007] [2021-10-06 21:04:09,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811783007] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:09,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:09,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:04:09,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850080185] [2021-10-06 21:04:09,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:04:09,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:04:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:04:09,786 INFO L87 Difference]: Start difference. First operand 372 states and 1285 transitions. Second operand has 20 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) [2021-10-06 21:04:16,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:16,166 INFO L93 Difference]: Finished difference Result 646 states and 1759 transitions. [2021-10-06 21:04:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:04:16,168 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:04:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:16,170 INFO L225 Difference]: With dead ends: 646 [2021-10-06 21:04:16,170 INFO L226 Difference]: Without dead ends: 636 [2021-10-06 21:04:16,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 6232.6ms TimeCoverageRelationStatistics Valid=543, Invalid=1619, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:04:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-10-06 21:04:16,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 364. [2021-10-06 21:04:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 3.440771349862259) internal successors, (1249), 363 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 1249 transitions. [2021-10-06 21:04:16,181 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 1249 transitions. Word has length 17 [2021-10-06 21:04:16,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:16,181 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 1249 transitions. [2021-10-06 21:04:16,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:04:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 1249 transitions. [2021-10-06 21:04:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:04:16,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:16,183 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:16,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:16,392 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 [2021-10-06 21:04:16,393 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)] === [2021-10-06 21:04:16,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:16,394 INFO L82 PathProgramCache]: Analyzing trace with hash -459281969, now seen corresponding path program 52 times [2021-10-06 21:04:16,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:16,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461649652] [2021-10-06 21:04:16,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:04:16,395 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:16,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:16,396 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) [2021-10-06 21:04:16,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:04:17,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:04:17,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:17,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:04:17,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:18,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:19,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:19,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461649652] [2021-10-06 21:04:19,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461649652] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:19,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:19,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:04:19,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326361361] [2021-10-06 21:04:19,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:04:19,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:04:19,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:04:19,650 INFO L87 Difference]: Start difference. First operand 364 states and 1249 transitions. Second operand has 20 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) [2021-10-06 21:04:27,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:27,944 INFO L93 Difference]: Finished difference Result 612 states and 1710 transitions. [2021-10-06 21:04:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:04:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:04:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:27,948 INFO L225 Difference]: With dead ends: 612 [2021-10-06 21:04:27,948 INFO L226 Difference]: Without dead ends: 602 [2021-10-06 21:04:27,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 7829.1ms TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:04:27,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-06 21:04:27,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 374. [2021-10-06 21:04:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4691689008042896) internal successors, (1294), 373 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1294 transitions. [2021-10-06 21:04:27,959 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1294 transitions. Word has length 17 [2021-10-06 21:04:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:27,960 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1294 transitions. [2021-10-06 21:04:27,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:04:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1294 transitions. [2021-10-06 21:04:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:04:27,961 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:27,961 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:27,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:28,163 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 [2021-10-06 21:04:28,164 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)] === [2021-10-06 21:04:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:28,164 INFO L82 PathProgramCache]: Analyzing trace with hash 506628841, now seen corresponding path program 53 times [2021-10-06 21:04:28,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:28,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789532061] [2021-10-06 21:04:28,165 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:04:28,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:28,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:28,167 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) [2021-10-06 21:04:28,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:04:29,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:04:29,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:29,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:04:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:29,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:31,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:31,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789532061] [2021-10-06 21:04:31,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789532061] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:31,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:31,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:04:31,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450146382] [2021-10-06 21:04:31,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:04:31,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:04:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:04:31,361 INFO L87 Difference]: Start difference. First operand 374 states and 1294 transitions. Second operand has 20 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) [2021-10-06 21:04:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:38,734 INFO L93 Difference]: Finished difference Result 580 states and 1647 transitions. [2021-10-06 21:04:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:04:38,735 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:04:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:38,737 INFO L225 Difference]: With dead ends: 580 [2021-10-06 21:04:38,737 INFO L226 Difference]: Without dead ends: 570 [2021-10-06 21:04:38,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 7064.5ms TimeCoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:04:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-06 21:04:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 374. [2021-10-06 21:04:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4691689008042896) internal successors, (1294), 373 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1294 transitions. [2021-10-06 21:04:38,747 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1294 transitions. Word has length 17 [2021-10-06 21:04:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:38,747 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1294 transitions. [2021-10-06 21:04:38,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:04:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1294 transitions. [2021-10-06 21:04:38,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:04:38,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:38,748 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:38,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:38,948 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 [2021-10-06 21:04:38,949 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:38,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1933278089, now seen corresponding path program 54 times [2021-10-06 21:04:38,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:38,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709041459] [2021-10-06 21:04:38,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:04:38,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:38,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:38,953 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:38,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:04:40,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:04:40,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:04:40,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:04:40,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:40,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:42,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:42,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709041459] [2021-10-06 21:04:42,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709041459] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:42,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:42,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:04:42,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619590238] [2021-10-06 21:04:42,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:04:42,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:04:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:04:42,209 INFO L87 Difference]: Start difference. First operand 374 states and 1294 transitions. Second operand has 20 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) [2021-10-06 21:04:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:04:51,230 INFO L93 Difference]: Finished difference Result 634 states and 1823 transitions. [2021-10-06 21:04:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:04:51,231 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:04:51,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:04:51,233 INFO L225 Difference]: With dead ends: 634 [2021-10-06 21:04:51,233 INFO L226 Difference]: Without dead ends: 624 [2021-10-06 21:04:51,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 8849.3ms TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:04:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-10-06 21:04:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 398. [2021-10-06 21:04:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.526448362720403) internal successors, (1400), 397 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:04:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1400 transitions. [2021-10-06 21:04:51,246 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1400 transitions. Word has length 17 [2021-10-06 21:04:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:04:51,247 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 1400 transitions. [2021-10-06 21:04:51,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:04:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1400 transitions. [2021-10-06 21:04:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:04:51,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:04:51,249 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:04:51,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:04:51,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:04:51,464 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:04:51,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:04:51,464 INFO L82 PathProgramCache]: Analyzing trace with hash -647508023, now seen corresponding path program 55 times [2021-10-06 21:04:51,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:04:51,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542807874] [2021-10-06 21:04:51,465 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:04:51,465 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:04:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:04:51,467 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:04:51,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:04:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:04:52,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:04:52,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:04:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:53,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:04:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:04:54,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:04:54,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542807874] [2021-10-06 21:04:54,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542807874] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:04:54,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:04:54,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:04:54,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972609662] [2021-10-06 21:04:54,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:04:54,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:04:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:04:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:04:54,784 INFO L87 Difference]: Start difference. First operand 398 states and 1400 transitions. Second operand has 20 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) [2021-10-06 21:05:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:00,956 INFO L93 Difference]: Finished difference Result 704 states and 1967 transitions. [2021-10-06 21:05:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:05:00,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:05:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:00,959 INFO L225 Difference]: With dead ends: 704 [2021-10-06 21:05:00,959 INFO L226 Difference]: Without dead ends: 694 [2021-10-06 21:05:00,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 5997.4ms TimeCoverageRelationStatistics Valid=497, Invalid=1309, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:05:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-06 21:05:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 408. [2021-10-06 21:05:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 3.5503685503685505) internal successors, (1445), 407 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1445 transitions. [2021-10-06 21:05:00,969 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1445 transitions. Word has length 17 [2021-10-06 21:05:00,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:00,969 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1445 transitions. [2021-10-06 21:05:00,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:05:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1445 transitions. [2021-10-06 21:05:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:05:00,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:00,970 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:00,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:01,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:01,171 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:01,172 INFO L82 PathProgramCache]: Analyzing trace with hash -619802393, now seen corresponding path program 56 times [2021-10-06 21:05:01,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:01,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060113500] [2021-10-06 21:05:01,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:05:01,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:01,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:01,174 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:01,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:05:02,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:05:02,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:02,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:05:02,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:03,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:04,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:04,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060113500] [2021-10-06 21:05:04,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060113500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:04,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:04,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:05:04,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802427] [2021-10-06 21:05:04,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:05:04,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:05:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:04,582 INFO L87 Difference]: Start difference. First operand 408 states and 1445 transitions. Second operand has 20 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) [2021-10-06 21:05:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:12,037 INFO L93 Difference]: Finished difference Result 680 states and 1928 transitions. [2021-10-06 21:05:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:05:12,038 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:05:12,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:12,040 INFO L225 Difference]: With dead ends: 680 [2021-10-06 21:05:12,040 INFO L226 Difference]: Without dead ends: 670 [2021-10-06 21:05:12,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 7149.6ms TimeCoverageRelationStatistics Valid=509, Invalid=1383, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:05:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-10-06 21:05:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 406. [2021-10-06 21:05:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.545679012345679) internal successors, (1436), 405 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1436 transitions. [2021-10-06 21:05:12,051 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1436 transitions. Word has length 17 [2021-10-06 21:05:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:12,052 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 1436 transitions. [2021-10-06 21:05:12,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:05:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1436 transitions. [2021-10-06 21:05:12,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:05:12,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:12,053 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:12,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2021-10-06 21:05:12,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:12,255 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:12,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1532367349, now seen corresponding path program 57 times [2021-10-06 21:05:12,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:12,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821848488] [2021-10-06 21:05:12,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:05:12,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:12,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:12,258 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:12,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:05:13,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:05:13,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:13,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:05:13,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:14,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:15,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:15,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821848488] [2021-10-06 21:05:15,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821848488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:15,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:15,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:05:15,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475540239] [2021-10-06 21:05:15,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:05:15,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:05:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:15,334 INFO L87 Difference]: Start difference. First operand 406 states and 1436 transitions. Second operand has 20 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) [2021-10-06 21:05:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:22,148 INFO L93 Difference]: Finished difference Result 641 states and 1833 transitions. [2021-10-06 21:05:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:05:22,150 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:05:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:22,152 INFO L225 Difference]: With dead ends: 641 [2021-10-06 21:05:22,152 INFO L226 Difference]: Without dead ends: 626 [2021-10-06 21:05:22,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 6291.3ms TimeCoverageRelationStatistics Valid=560, Invalid=2302, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:05:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-10-06 21:05:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 408. [2021-10-06 21:05:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 3.5503685503685505) internal successors, (1445), 407 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1445 transitions. [2021-10-06 21:05:22,163 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1445 transitions. Word has length 17 [2021-10-06 21:05:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:22,163 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1445 transitions. [2021-10-06 21:05:22,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:05:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1445 transitions. [2021-10-06 21:05:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:05:22,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:22,165 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:22,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:22,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:22,367 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:22,367 INFO L82 PathProgramCache]: Analyzing trace with hash -566456539, now seen corresponding path program 58 times [2021-10-06 21:05:22,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:22,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938144645] [2021-10-06 21:05:22,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:05:22,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:22,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:22,370 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:22,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:05:23,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:05:23,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:23,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:05:23,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:24,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:25,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:25,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938144645] [2021-10-06 21:05:25,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938144645] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:25,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:25,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:05:25,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366218353] [2021-10-06 21:05:25,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:05:25,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:05:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:25,605 INFO L87 Difference]: Start difference. First operand 408 states and 1445 transitions. Second operand has 20 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) [2021-10-06 21:05:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:32,266 INFO L93 Difference]: Finished difference Result 588 states and 1751 transitions. [2021-10-06 21:05:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:05:32,267 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:05:32,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:32,269 INFO L225 Difference]: With dead ends: 588 [2021-10-06 21:05:32,269 INFO L226 Difference]: Without dead ends: 578 [2021-10-06 21:05:32,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 6550.3ms TimeCoverageRelationStatistics Valid=441, Invalid=1721, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:05:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-10-06 21:05:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 408. [2021-10-06 21:05:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 3.5503685503685505) internal successors, (1445), 407 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1445 transitions. [2021-10-06 21:05:32,280 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1445 transitions. Word has length 17 [2021-10-06 21:05:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:32,280 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1445 transitions. [2021-10-06 21:05:32,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:05:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1445 transitions. [2021-10-06 21:05:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:05:32,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:32,282 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:32,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-10-06 21:05:32,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:32,496 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:32,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:32,497 INFO L82 PathProgramCache]: Analyzing trace with hash -687992501, now seen corresponding path program 59 times [2021-10-06 21:05:32,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:32,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053832236] [2021-10-06 21:05:32,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:05:32,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:32,500 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:32,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:05:34,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:05:34,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:34,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:05:34,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:34,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:36,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:36,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053832236] [2021-10-06 21:05:36,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053832236] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:36,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:36,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:05:36,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687223729] [2021-10-06 21:05:36,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:05:36,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:05:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:36,315 INFO L87 Difference]: Start difference. First operand 408 states and 1445 transitions. Second operand has 20 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) [2021-10-06 21:05:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:41,702 INFO L93 Difference]: Finished difference Result 526 states and 1642 transitions. [2021-10-06 21:05:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:05:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:05:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:41,705 INFO L225 Difference]: With dead ends: 526 [2021-10-06 21:05:41,705 INFO L226 Difference]: Without dead ends: 516 [2021-10-06 21:05:41,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 5342.3ms TimeCoverageRelationStatistics Valid=310, Invalid=1412, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:05:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-06 21:05:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 414. [2021-10-06 21:05:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.5205811138014527) internal successors, (1454), 413 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1454 transitions. [2021-10-06 21:05:41,714 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1454 transitions. Word has length 17 [2021-10-06 21:05:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:41,714 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1454 transitions. [2021-10-06 21:05:41,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:05:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1454 transitions. [2021-10-06 21:05:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:05:41,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:41,716 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:41,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:41,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:41,917 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:41,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:41,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2032702145, now seen corresponding path program 60 times [2021-10-06 21:05:41,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:41,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269794663] [2021-10-06 21:05:41,918 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:05:41,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:41,920 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:41,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:05:43,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:05:43,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:05:43,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:05:43,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:43,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:44,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:44,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269794663] [2021-10-06 21:05:44,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269794663] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:44,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:44,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:05:44,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106840183] [2021-10-06 21:05:44,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:05:44,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:05:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:44,840 INFO L87 Difference]: Start difference. First operand 414 states and 1454 transitions. Second operand has 20 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) [2021-10-06 21:05:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:05:53,006 INFO L93 Difference]: Finished difference Result 628 states and 1845 transitions. [2021-10-06 21:05:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:05:53,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:05:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:05:53,010 INFO L225 Difference]: With dead ends: 628 [2021-10-06 21:05:53,010 INFO L226 Difference]: Without dead ends: 608 [2021-10-06 21:05:53,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 7864.3ms TimeCoverageRelationStatistics Valid=544, Invalid=2536, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:05:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-06 21:05:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 420. [2021-10-06 21:05:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.5107398568019095) internal successors, (1471), 419 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:05:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1471 transitions. [2021-10-06 21:05:53,025 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1471 transitions. Word has length 17 [2021-10-06 21:05:53,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:05:53,025 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1471 transitions. [2021-10-06 21:05:53,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:05:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1471 transitions. [2021-10-06 21:05:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:05:53,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:05:53,027 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:05:53,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-06 21:05:53,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:05:53,228 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:05:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:05:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1479291685, now seen corresponding path program 61 times [2021-10-06 21:05:53,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:05:53,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170247322] [2021-10-06 21:05:53,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:05:53,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:05:53,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:05:53,230 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:05:53,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:05:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:05:54,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:05:54,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:05:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:55,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:05:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:05:56,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:05:56,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170247322] [2021-10-06 21:05:56,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170247322] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:05:56,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:05:56,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:05:56,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879413454] [2021-10-06 21:05:56,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:05:56,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:05:56,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:05:56,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:05:56,224 INFO L87 Difference]: Start difference. First operand 420 states and 1471 transitions. Second operand has 20 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) [2021-10-06 21:06:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:08,194 INFO L93 Difference]: Finished difference Result 802 states and 2213 transitions. [2021-10-06 21:06:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:06:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:06:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:08,197 INFO L225 Difference]: With dead ends: 802 [2021-10-06 21:06:08,197 INFO L226 Difference]: Without dead ends: 787 [2021-10-06 21:06:08,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 11591.8ms TimeCoverageRelationStatistics Valid=989, Invalid=3567, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:06:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-10-06 21:06:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 434. [2021-10-06 21:06:08,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.5427251732101617) internal successors, (1534), 433 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1534 transitions. [2021-10-06 21:06:08,210 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1534 transitions. Word has length 17 [2021-10-06 21:06:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:08,210 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1534 transitions. [2021-10-06 21:06:08,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:06:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1534 transitions. [2021-10-06 21:06:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:06:08,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:08,211 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:08,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:08,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:08,412 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:08,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:08,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1506997315, now seen corresponding path program 62 times [2021-10-06 21:06:08,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:08,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302993499] [2021-10-06 21:06:08,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:06:08,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:08,416 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:08,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:06:09,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:06:09,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:09,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:06:09,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:10,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:11,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:11,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302993499] [2021-10-06 21:06:11,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302993499] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:11,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:11,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:06:11,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982667685] [2021-10-06 21:06:11,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:06:11,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:06:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:11,465 INFO L87 Difference]: Start difference. First operand 434 states and 1534 transitions. Second operand has 20 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) [2021-10-06 21:06:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:21,119 INFO L93 Difference]: Finished difference Result 797 states and 2200 transitions. [2021-10-06 21:06:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:06:21,121 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:06:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:21,123 INFO L225 Difference]: With dead ends: 797 [2021-10-06 21:06:21,123 INFO L226 Difference]: Without dead ends: 782 [2021-10-06 21:06:21,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 9238.6ms TimeCoverageRelationStatistics Valid=886, Invalid=3274, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:06:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-10-06 21:06:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 428. [2021-10-06 21:06:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.529274004683841) internal successors, (1507), 427 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1507 transitions. [2021-10-06 21:06:21,137 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1507 transitions. Word has length 17 [2021-10-06 21:06:21,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:21,137 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1507 transitions. [2021-10-06 21:06:21,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:06:21,137 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1507 transitions. [2021-10-06 21:06:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:06:21,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:21,139 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:21,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:21,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:21,354 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:21,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1540117863, now seen corresponding path program 63 times [2021-10-06 21:06:21,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:21,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904354409] [2021-10-06 21:06:21,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:06:21,356 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:21,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:21,357 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:21,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:06:22,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:06:22,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:22,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:06:22,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:23,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:24,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:24,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904354409] [2021-10-06 21:06:24,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904354409] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:24,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:24,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:06:24,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577947306] [2021-10-06 21:06:24,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:06:24,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:06:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:24,497 INFO L87 Difference]: Start difference. First operand 428 states and 1507 transitions. Second operand has 20 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) [2021-10-06 21:06:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:31,508 INFO L93 Difference]: Finished difference Result 694 states and 2034 transitions. [2021-10-06 21:06:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:06:31,509 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:06:31,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:31,512 INFO L225 Difference]: With dead ends: 694 [2021-10-06 21:06:31,512 INFO L226 Difference]: Without dead ends: 684 [2021-10-06 21:06:31,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 6549.4ms TimeCoverageRelationStatistics Valid=562, Invalid=2408, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:06:31,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-06 21:06:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 436. [2021-10-06 21:06:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.547126436781609) internal successors, (1543), 435 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1543 transitions. [2021-10-06 21:06:31,527 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1543 transitions. Word has length 17 [2021-10-06 21:06:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:31,527 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1543 transitions. [2021-10-06 21:06:31,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:06:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1543 transitions. [2021-10-06 21:06:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:06:31,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:31,529 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:31,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:31,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:31,743 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:31,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1925527575, now seen corresponding path program 64 times [2021-10-06 21:06:31,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:31,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377500031] [2021-10-06 21:06:31,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:06:31,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:31,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:31,746 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:31,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:06:33,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:06:33,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:33,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:06:33,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:33,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:33,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:34,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:34,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377500031] [2021-10-06 21:06:34,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377500031] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:34,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:34,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:06:34,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059912436] [2021-10-06 21:06:34,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:06:34,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:06:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:34,965 INFO L87 Difference]: Start difference. First operand 436 states and 1543 transitions. Second operand has 20 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) [2021-10-06 21:06:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:44,024 INFO L93 Difference]: Finished difference Result 713 states and 2033 transitions. [2021-10-06 21:06:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:06:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:06:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:44,027 INFO L225 Difference]: With dead ends: 713 [2021-10-06 21:06:44,027 INFO L226 Difference]: Without dead ends: 698 [2021-10-06 21:06:44,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 8640.2ms TimeCoverageRelationStatistics Valid=739, Invalid=3043, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:06:44,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-10-06 21:06:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 436. [2021-10-06 21:06:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.547126436781609) internal successors, (1543), 435 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1543 transitions. [2021-10-06 21:06:44,040 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1543 transitions. Word has length 17 [2021-10-06 21:06:44,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:44,041 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1543 transitions. [2021-10-06 21:06:44,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:06:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1543 transitions. [2021-10-06 21:06:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:06:44,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:44,043 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:44,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-06 21:06:44,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:44,256 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:44,257 INFO L82 PathProgramCache]: Analyzing trace with hash -959616765, now seen corresponding path program 65 times [2021-10-06 21:06:44,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:44,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369280694] [2021-10-06 21:06:44,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:06:44,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:44,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:44,258 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:44,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:06:45,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:06:45,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:45,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:06:45,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:46,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:47,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:47,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369280694] [2021-10-06 21:06:47,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369280694] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:47,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:47,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:06:47,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35475961] [2021-10-06 21:06:47,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:06:47,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:47,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:06:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:47,499 INFO L87 Difference]: Start difference. First operand 436 states and 1543 transitions. Second operand has 20 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) [2021-10-06 21:06:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:06:55,397 INFO L93 Difference]: Finished difference Result 641 states and 1910 transitions. [2021-10-06 21:06:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:06:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:06:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:06:55,401 INFO L225 Difference]: With dead ends: 641 [2021-10-06 21:06:55,401 INFO L226 Difference]: Without dead ends: 626 [2021-10-06 21:06:55,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 7366.5ms TimeCoverageRelationStatistics Valid=570, Invalid=2400, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:06:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-10-06 21:06:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 436. [2021-10-06 21:06:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.547126436781609) internal successors, (1543), 435 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:06:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1543 transitions. [2021-10-06 21:06:55,421 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1543 transitions. Word has length 17 [2021-10-06 21:06:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:06:55,421 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1543 transitions. [2021-10-06 21:06:55,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:06:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1543 transitions. [2021-10-06 21:06:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:06:55,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:06:55,422 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:06:55,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:06:55,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:06:55,623 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:06:55,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:06:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash -160773243, now seen corresponding path program 66 times [2021-10-06 21:06:55,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:06:55,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703098346] [2021-10-06 21:06:55,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:06:55,626 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:06:55,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:06:55,627 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:06:55,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:06:57,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:06:57,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:06:57,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:06:57,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:06:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:57,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:06:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:06:58,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:06:58,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703098346] [2021-10-06 21:06:58,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703098346] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:06:58,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:06:58,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:06:58,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250550999] [2021-10-06 21:06:58,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:06:58,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:06:58,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:06:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:06:58,631 INFO L87 Difference]: Start difference. First operand 436 states and 1543 transitions. Second operand has 20 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) [2021-10-06 21:07:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:03,265 INFO L93 Difference]: Finished difference Result 578 states and 1770 transitions. [2021-10-06 21:07:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:07:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:07:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:03,269 INFO L225 Difference]: With dead ends: 578 [2021-10-06 21:07:03,269 INFO L226 Difference]: Without dead ends: 558 [2021-10-06 21:07:03,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4547.5ms TimeCoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:07:03,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-06 21:07:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 438. [2021-10-06 21:07:03,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 3.537757437070938) internal successors, (1546), 437 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 1546 transitions. [2021-10-06 21:07:03,282 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 1546 transitions. Word has length 17 [2021-10-06 21:07:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:03,282 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 1546 transitions. [2021-10-06 21:07:03,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:07:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 1546 transitions. [2021-10-06 21:07:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:07:03,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:03,285 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:03,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:03,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:03,498 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1366405759, now seen corresponding path program 67 times [2021-10-06 21:07:03,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:03,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081097220] [2021-10-06 21:07:03,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:07:03,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:03,501 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:03,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:07:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:07:05,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:07:05,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:05,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:06,759 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:06,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081097220] [2021-10-06 21:07:06,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081097220] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:06,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:06,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:07:06,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357079430] [2021-10-06 21:07:06,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:07:06,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:06,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:07:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:07:06,761 INFO L87 Difference]: Start difference. First operand 438 states and 1546 transitions. Second operand has 20 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) [2021-10-06 21:07:18,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:18,069 INFO L93 Difference]: Finished difference Result 722 states and 2105 transitions. [2021-10-06 21:07:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:07:18,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:07:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:18,072 INFO L225 Difference]: With dead ends: 722 [2021-10-06 21:07:18,072 INFO L226 Difference]: Without dead ends: 712 [2021-10-06 21:07:18,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 10986.6ms TimeCoverageRelationStatistics Valid=721, Invalid=2701, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:07:18,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-10-06 21:07:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 454. [2021-10-06 21:07:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 3.5717439293598234) internal successors, (1618), 453 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1618 transitions. [2021-10-06 21:07:18,082 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1618 transitions. Word has length 17 [2021-10-06 21:07:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:18,082 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1618 transitions. [2021-10-06 21:07:18,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:07:18,082 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1618 transitions. [2021-10-06 21:07:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:07:18,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:18,083 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:18,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:18,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:18,284 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1214380353, now seen corresponding path program 68 times [2021-10-06 21:07:18,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:18,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132347278] [2021-10-06 21:07:18,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:07:18,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:18,288 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:18,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:07:20,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:07:20,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:20,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:07:20,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:20,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:21,729 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:21,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132347278] [2021-10-06 21:07:21,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132347278] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:21,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:21,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:07:21,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919068943] [2021-10-06 21:07:21,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:07:21,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:21,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:07:21,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:07:21,731 INFO L87 Difference]: Start difference. First operand 454 states and 1618 transitions. Second operand has 20 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) [2021-10-06 21:07:30,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:30,993 INFO L93 Difference]: Finished difference Result 784 states and 2258 transitions. [2021-10-06 21:07:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:07:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:07:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:30,995 INFO L225 Difference]: With dead ends: 784 [2021-10-06 21:07:30,996 INFO L226 Difference]: Without dead ends: 774 [2021-10-06 21:07:30,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 8758.0ms TimeCoverageRelationStatistics Valid=839, Invalid=2821, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:07:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-10-06 21:07:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 464. [2021-10-06 21:07:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.591792656587473) internal successors, (1663), 463 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1663 transitions. [2021-10-06 21:07:31,006 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1663 transitions. Word has length 17 [2021-10-06 21:07:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:31,006 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1663 transitions. [2021-10-06 21:07:31,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:07:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1663 transitions. [2021-10-06 21:07:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:07:31,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:31,007 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:31,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:31,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:31,208 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:31,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1186674723, now seen corresponding path program 69 times [2021-10-06 21:07:31,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:31,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954430341] [2021-10-06 21:07:31,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:07:31,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:31,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:31,212 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:31,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:07:32,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:07:32,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:32,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:07:32,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:33,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:34,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:34,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954430341] [2021-10-06 21:07:34,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954430341] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:34,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:34,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:07:34,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688432152] [2021-10-06 21:07:34,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:07:34,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:34,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:07:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:07:34,759 INFO L87 Difference]: Start difference. First operand 464 states and 1663 transitions. Second operand has 20 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) [2021-10-06 21:07:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:42,595 INFO L93 Difference]: Finished difference Result 756 states and 2201 transitions. [2021-10-06 21:07:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:07:42,596 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:07:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:42,599 INFO L225 Difference]: With dead ends: 756 [2021-10-06 21:07:42,599 INFO L226 Difference]: Without dead ends: 746 [2021-10-06 21:07:42,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 7487.8ms TimeCoverageRelationStatistics Valid=709, Invalid=2261, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:07:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-10-06 21:07:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 454. [2021-10-06 21:07:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 3.5717439293598234) internal successors, (1618), 453 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1618 transitions. [2021-10-06 21:07:42,615 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1618 transitions. Word has length 17 [2021-10-06 21:07:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:42,615 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1618 transitions. [2021-10-06 21:07:42,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:07:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1618 transitions. [2021-10-06 21:07:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:07:42,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:42,617 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:42,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:07:42,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:42,831 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:42,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:42,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2099239679, now seen corresponding path program 70 times [2021-10-06 21:07:42,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:42,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503321769] [2021-10-06 21:07:42,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:07:42,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:42,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:42,835 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:42,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:07:44,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:07:44,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:44,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:07:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:44,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:46,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:46,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503321769] [2021-10-06 21:07:46,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503321769] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:46,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:46,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:07:46,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536460254] [2021-10-06 21:07:46,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:07:46,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:07:46,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:07:46,183 INFO L87 Difference]: Start difference. First operand 454 states and 1618 transitions. Second operand has 20 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) [2021-10-06 21:07:54,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:07:54,107 INFO L93 Difference]: Finished difference Result 715 states and 2067 transitions. [2021-10-06 21:07:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:07:54,109 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:07:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:07:54,110 INFO L225 Difference]: With dead ends: 715 [2021-10-06 21:07:54,110 INFO L226 Difference]: Without dead ends: 700 [2021-10-06 21:07:54,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 7582.8ms TimeCoverageRelationStatistics Valid=603, Invalid=2367, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:07:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-10-06 21:07:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 452. [2021-10-06 21:07:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.567627494456763) internal successors, (1609), 451 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:07:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1609 transitions. [2021-10-06 21:07:54,123 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1609 transitions. Word has length 17 [2021-10-06 21:07:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:07:54,123 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1609 transitions. [2021-10-06 21:07:54,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:07:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1609 transitions. [2021-10-06 21:07:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:07:54,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:07:54,125 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:07:54,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-06 21:07:54,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:07:54,329 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:07:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:07:54,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1042950019, now seen corresponding path program 71 times [2021-10-06 21:07:54,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:07:54,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257117102] [2021-10-06 21:07:54,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:07:54,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:07:54,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:07:54,332 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:07:54,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:07:55,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:07:55,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:07:55,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:07:55,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:07:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:56,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:07:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:07:57,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:07:57,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257117102] [2021-10-06 21:07:57,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257117102] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:07:57,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:07:57,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:07:57,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838825582] [2021-10-06 21:07:57,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:07:57,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:07:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:07:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:07:57,676 INFO L87 Difference]: Start difference. First operand 452 states and 1609 transitions. Second operand has 20 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) [2021-10-06 21:08:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:04,467 INFO L93 Difference]: Finished difference Result 648 states and 1953 transitions. [2021-10-06 21:08:04,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:08:04,468 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:08:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:04,469 INFO L225 Difference]: With dead ends: 648 [2021-10-06 21:08:04,469 INFO L226 Difference]: Without dead ends: 638 [2021-10-06 21:08:04,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 6446.2ms TimeCoverageRelationStatistics Valid=463, Invalid=1987, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:08:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-10-06 21:08:04,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 452. [2021-10-06 21:08:04,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.567627494456763) internal successors, (1609), 451 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1609 transitions. [2021-10-06 21:08:04,479 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1609 transitions. Word has length 17 [2021-10-06 21:08:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:04,479 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 1609 transitions. [2021-10-06 21:08:04,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:08:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1609 transitions. [2021-10-06 21:08:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:08:04,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:04,480 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:04,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:04,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:04,681 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:08:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1996021349, now seen corresponding path program 72 times [2021-10-06 21:08:04,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:04,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344278486] [2021-10-06 21:08:04,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:08:04,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:04,684 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:04,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:08:06,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:08:06,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:06,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:08:06,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:07,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:08,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:08,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344278486] [2021-10-06 21:08:08,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344278486] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:08:08,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:08:08,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:08:08,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577134604] [2021-10-06 21:08:08,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:08:08,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:08:08,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:08,259 INFO L87 Difference]: Start difference. First operand 452 states and 1609 transitions. Second operand has 20 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) [2021-10-06 21:08:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:18,110 INFO L93 Difference]: Finished difference Result 813 states and 2346 transitions. [2021-10-06 21:08:18,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:08:18,111 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:08:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:18,113 INFO L225 Difference]: With dead ends: 813 [2021-10-06 21:08:18,113 INFO L226 Difference]: Without dead ends: 798 [2021-10-06 21:08:18,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 9630.4ms TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:08:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-06 21:08:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 470. [2021-10-06 21:08:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 3.603411513859275) internal successors, (1690), 469 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1690 transitions. [2021-10-06 21:08:18,124 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1690 transitions. Word has length 17 [2021-10-06 21:08:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:18,124 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1690 transitions. [2021-10-06 21:08:18,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:08:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1690 transitions. [2021-10-06 21:08:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:08:18,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:18,126 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:18,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:18,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:18,326 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:08:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1133328869, now seen corresponding path program 73 times [2021-10-06 21:08:18,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:18,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379343815] [2021-10-06 21:08:18,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:08:18,328 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:18,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:18,330 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:18,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:08:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:08:19,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:08:19,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:20,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:21,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:21,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379343815] [2021-10-06 21:08:21,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379343815] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:08:21,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:08:21,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:08:21,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995382175] [2021-10-06 21:08:21,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:08:21,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:08:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:21,654 INFO L87 Difference]: Start difference. First operand 470 states and 1690 transitions. Second operand has 20 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) [2021-10-06 21:08:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:28,681 INFO L93 Difference]: Finished difference Result 679 states and 2035 transitions. [2021-10-06 21:08:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:08:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:08:28,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:28,683 INFO L225 Difference]: With dead ends: 679 [2021-10-06 21:08:28,683 INFO L226 Difference]: Without dead ends: 664 [2021-10-06 21:08:28,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 6864.2ms TimeCoverageRelationStatistics Valid=509, Invalid=2041, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:08:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-10-06 21:08:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 470. [2021-10-06 21:08:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 3.603411513859275) internal successors, (1690), 469 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1690 transitions. [2021-10-06 21:08:28,694 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1690 transitions. Word has length 17 [2021-10-06 21:08:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:28,694 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1690 transitions. [2021-10-06 21:08:28,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:08:28,694 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1690 transitions. [2021-10-06 21:08:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:08:28,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:28,696 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:28,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2021-10-06 21:08:28,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:28,897 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:08:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:28,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1985637951, now seen corresponding path program 74 times [2021-10-06 21:08:28,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:28,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725941470] [2021-10-06 21:08:28,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:08:28,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:28,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:28,899 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:28,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:08:30,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:08:30,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:30,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:08:30,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:31,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:32,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:32,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725941470] [2021-10-06 21:08:32,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725941470] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:08:32,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:08:32,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:08:32,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676587857] [2021-10-06 21:08:32,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:08:32,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:08:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:32,428 INFO L87 Difference]: Start difference. First operand 470 states and 1690 transitions. Second operand has 20 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) [2021-10-06 21:08:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:43,013 INFO L93 Difference]: Finished difference Result 826 states and 2398 transitions. [2021-10-06 21:08:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:08:43,015 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:08:43,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:43,016 INFO L225 Difference]: With dead ends: 826 [2021-10-06 21:08:43,016 INFO L226 Difference]: Without dead ends: 816 [2021-10-06 21:08:43,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 10181.9ms TimeCoverageRelationStatistics Valid=755, Invalid=2551, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:08:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-10-06 21:08:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 490. [2021-10-06 21:08:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.640081799591002) internal successors, (1780), 489 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1780 transitions. [2021-10-06 21:08:43,027 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1780 transitions. Word has length 17 [2021-10-06 21:08:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:43,027 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1780 transitions. [2021-10-06 21:08:43,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:08:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1780 transitions. [2021-10-06 21:08:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:08:43,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:43,029 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:43,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:43,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:43,230 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:08:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2013343581, now seen corresponding path program 75 times [2021-10-06 21:08:43,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:43,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882830032] [2021-10-06 21:08:43,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:08:43,231 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:43,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:43,233 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:43,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-06 21:08:45,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:08:45,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:45,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:08:45,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:45,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:46,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:46,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882830032] [2021-10-06 21:08:46,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882830032] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:08:46,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:08:46,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:08:46,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819430976] [2021-10-06 21:08:46,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:08:46,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:08:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:46,843 INFO L87 Difference]: Start difference. First operand 490 states and 1780 transitions. Second operand has 20 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) [2021-10-06 21:08:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:08:55,595 INFO L93 Difference]: Finished difference Result 827 states and 2385 transitions. [2021-10-06 21:08:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:08:55,596 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:08:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:08:55,603 INFO L225 Difference]: With dead ends: 827 [2021-10-06 21:08:55,604 INFO L226 Difference]: Without dead ends: 812 [2021-10-06 21:08:55,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 8352.5ms TimeCoverageRelationStatistics Valid=794, Invalid=2628, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:08:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-06 21:08:55,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 482. [2021-10-06 21:08:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 3.625779625779626) internal successors, (1744), 481 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:08:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1744 transitions. [2021-10-06 21:08:55,614 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1744 transitions. Word has length 17 [2021-10-06 21:08:55,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:08:55,614 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1744 transitions. [2021-10-06 21:08:55,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:08:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1744 transitions. [2021-10-06 21:08:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:08:55,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:08:55,616 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:08:55,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-06 21:08:55,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:08:55,818 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:08:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:08:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2066439361, now seen corresponding path program 76 times [2021-10-06 21:08:55,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:08:55,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595124142] [2021-10-06 21:08:55,819 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:08:55,820 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:08:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:08:55,821 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:08:55,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-06 21:08:57,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:08:57,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:08:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:08:57,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:08:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:58,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:08:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:08:59,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:08:59,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595124142] [2021-10-06 21:08:59,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595124142] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:08:59,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:08:59,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:08:59,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302752519] [2021-10-06 21:08:59,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:08:59,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:08:59,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:08:59,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:08:59,418 INFO L87 Difference]: Start difference. First operand 482 states and 1744 transitions. Second operand has 20 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) [2021-10-06 21:09:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:08,484 INFO L93 Difference]: Finished difference Result 749 states and 2230 transitions. [2021-10-06 21:09:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:09:08,485 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:09:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:08,487 INFO L225 Difference]: With dead ends: 749 [2021-10-06 21:09:08,487 INFO L226 Difference]: Without dead ends: 734 [2021-10-06 21:09:08,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 8757.8ms TimeCoverageRelationStatistics Valid=774, Invalid=2648, Unknown=0, NotChecked=0, Total=3422 [2021-10-06 21:09:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-10-06 21:09:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 494. [2021-10-06 21:09:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.6470588235294117) internal successors, (1798), 493 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1798 transitions. [2021-10-06 21:09:08,505 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1798 transitions. Word has length 17 [2021-10-06 21:09:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:08,506 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1798 transitions. [2021-10-06 21:09:08,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:09:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1798 transitions. [2021-10-06 21:09:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:09:08,507 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:08,507 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:08,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2021-10-06 21:09:08,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:08,708 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:09:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1254864831, now seen corresponding path program 77 times [2021-10-06 21:09:08,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:08,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896443682] [2021-10-06 21:09:08,710 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:09:08,710 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:08,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:08,712 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:08,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-06 21:09:10,481 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:09:10,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:10,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:09:10,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:11,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:12,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:12,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896443682] [2021-10-06 21:09:12,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896443682] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:09:12,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:09:12,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:09:12,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185708674] [2021-10-06 21:09:12,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:09:12,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:09:12,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:09:12,204 INFO L87 Difference]: Start difference. First operand 494 states and 1798 transitions. Second operand has 20 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) [2021-10-06 21:09:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:17,195 INFO L93 Difference]: Finished difference Result 627 states and 2009 transitions. [2021-10-06 21:09:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:09:17,196 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:09:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:17,197 INFO L225 Difference]: With dead ends: 627 [2021-10-06 21:09:17,197 INFO L226 Difference]: Without dead ends: 612 [2021-10-06 21:09:17,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 4954.5ms TimeCoverageRelationStatistics Valid=341, Invalid=1381, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:09:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-10-06 21:09:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 494. [2021-10-06 21:09:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 493 states have (on average 3.6470588235294117) internal successors, (1798), 493 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 1798 transitions. [2021-10-06 21:09:17,206 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 1798 transitions. Word has length 17 [2021-10-06 21:09:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:17,207 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 1798 transitions. [2021-10-06 21:09:17,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:09:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 1798 transitions. [2021-10-06 21:09:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:09:17,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:17,208 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:17,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:17,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:17,409 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:09:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:17,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2133057947, now seen corresponding path program 78 times [2021-10-06 21:09:17,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:17,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526837195] [2021-10-06 21:09:17,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:09:17,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:17,412 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:17,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-06 21:09:19,316 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:09:19,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:19,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:09:19,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:19,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:21,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:21,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526837195] [2021-10-06 21:09:21,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526837195] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:09:21,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:09:21,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:09:21,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709494987] [2021-10-06 21:09:21,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:09:21,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:09:21,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:09:21,196 INFO L87 Difference]: Start difference. First operand 494 states and 1798 transitions. Second operand has 20 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) [2021-10-06 21:09:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:31,398 INFO L93 Difference]: Finished difference Result 738 states and 2277 transitions. [2021-10-06 21:09:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:09:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:09:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:31,400 INFO L225 Difference]: With dead ends: 738 [2021-10-06 21:09:31,400 INFO L226 Difference]: Without dead ends: 728 [2021-10-06 21:09:31,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 9888.1ms TimeCoverageRelationStatistics Valid=453, Invalid=1709, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:09:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2021-10-06 21:09:31,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 518. [2021-10-06 21:09:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 3.6731141199226305) internal successors, (1899), 517 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1899 transitions. [2021-10-06 21:09:31,411 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1899 transitions. Word has length 17 [2021-10-06 21:09:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:31,411 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 1899 transitions. [2021-10-06 21:09:31,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:09:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1899 transitions. [2021-10-06 21:09:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:09:31,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:31,412 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:31,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:31,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:31,613 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:09:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:31,614 INFO L82 PathProgramCache]: Analyzing trace with hash -593874973, now seen corresponding path program 79 times [2021-10-06 21:09:31,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:31,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129815981] [2021-10-06 21:09:31,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:09:31,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:31,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:31,617 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:31,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-06 21:09:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:09:33,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:09:33,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:34,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:35,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:35,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129815981] [2021-10-06 21:09:35,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129815981] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:09:35,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:09:35,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:09:35,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923675035] [2021-10-06 21:09:35,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:09:35,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:09:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:09:35,387 INFO L87 Difference]: Start difference. First operand 518 states and 1899 transitions. Second operand has 20 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) [2021-10-06 21:09:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:42,686 INFO L93 Difference]: Finished difference Result 840 states and 2518 transitions. [2021-10-06 21:09:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:09:42,688 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:09:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:42,690 INFO L225 Difference]: With dead ends: 840 [2021-10-06 21:09:42,691 INFO L226 Difference]: Without dead ends: 830 [2021-10-06 21:09:42,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 6946.7ms TimeCoverageRelationStatistics Valid=613, Invalid=1643, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:09:42,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-06 21:09:42,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 532. [2021-10-06 21:09:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 3.694915254237288) internal successors, (1962), 531 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1962 transitions. [2021-10-06 21:09:42,702 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1962 transitions. Word has length 17 [2021-10-06 21:09:42,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:42,702 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 1962 transitions. [2021-10-06 21:09:42,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:09:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1962 transitions. [2021-10-06 21:09:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:09:42,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:42,703 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:42,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:42,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:42,904 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:09:42,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:42,905 INFO L82 PathProgramCache]: Analyzing trace with hash -566169343, now seen corresponding path program 80 times [2021-10-06 21:09:42,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:42,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057306539] [2021-10-06 21:09:42,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:09:42,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:42,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:42,907 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:42,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-10-06 21:09:44,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:09:44,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:44,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:09:44,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:45,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:46,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:46,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057306539] [2021-10-06 21:09:46,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057306539] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:09:46,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:09:46,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:09:46,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75700547] [2021-10-06 21:09:46,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:09:46,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:09:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:09:46,775 INFO L87 Difference]: Start difference. First operand 532 states and 1962 transitions. Second operand has 20 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) [2021-10-06 21:09:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:09:52,425 INFO L93 Difference]: Finished difference Result 822 states and 2475 transitions. [2021-10-06 21:09:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:09:52,426 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:09:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:09:52,428 INFO L225 Difference]: With dead ends: 822 [2021-10-06 21:09:52,428 INFO L226 Difference]: Without dead ends: 812 [2021-10-06 21:09:52,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 5479.7ms TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:09:52,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-10-06 21:09:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 524. [2021-10-06 21:09:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 3.682600382409178) internal successors, (1926), 523 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:09:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1926 transitions. [2021-10-06 21:09:52,439 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1926 transitions. Word has length 17 [2021-10-06 21:09:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:09:52,439 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1926 transitions. [2021-10-06 21:09:52,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:09:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1926 transitions. [2021-10-06 21:09:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:09:52,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:09:52,440 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:09:52,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-10-06 21:09:52,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:09:52,641 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:09:52,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:09:52,642 INFO L82 PathProgramCache]: Analyzing trace with hash -533048795, now seen corresponding path program 81 times [2021-10-06 21:09:52,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:09:52,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307455000] [2021-10-06 21:09:52,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:09:52,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:09:52,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:09:52,647 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:09:52,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-10-06 21:09:54,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:09:54,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:09:54,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:09:54,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:09:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:55,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:09:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:09:56,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:09:56,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307455000] [2021-10-06 21:09:56,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307455000] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:09:56,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:09:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:09:56,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744237243] [2021-10-06 21:09:56,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:09:56,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:09:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:09:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:09:56,638 INFO L87 Difference]: Start difference. First operand 524 states and 1926 transitions. Second operand has 20 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) [2021-10-06 21:10:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:04,204 INFO L93 Difference]: Finished difference Result 802 states and 2462 transitions. [2021-10-06 21:10:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:10:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:10:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:04,207 INFO L225 Difference]: With dead ends: 802 [2021-10-06 21:10:04,207 INFO L226 Difference]: Without dead ends: 792 [2021-10-06 21:10:04,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 7285.8ms TimeCoverageRelationStatistics Valid=490, Invalid=1672, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:10:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-10-06 21:10:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 538. [2021-10-06 21:10:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 3.7039106145251397) internal successors, (1989), 537 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1989 transitions. [2021-10-06 21:10:04,218 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1989 transitions. Word has length 17 [2021-10-06 21:10:04,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:04,219 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1989 transitions. [2021-10-06 21:10:04,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:10:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1989 transitions. [2021-10-06 21:10:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:10:04,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:04,221 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:04,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:04,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:04,422 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:04,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash 296273063, now seen corresponding path program 82 times [2021-10-06 21:10:04,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:04,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462494400] [2021-10-06 21:10:04,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:10:04,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:04,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:04,425 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:04,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-10-06 21:10:06,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:10:06,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:06,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:10:06,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:06,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:08,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:08,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462494400] [2021-10-06 21:10:08,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462494400] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:10:08,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:10:08,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:10:08,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017268309] [2021-10-06 21:10:08,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:10:08,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:10:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:10:08,258 INFO L87 Difference]: Start difference. First operand 538 states and 1989 transitions. Second operand has 20 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) [2021-10-06 21:10:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:15,020 INFO L93 Difference]: Finished difference Result 777 states and 2400 transitions. [2021-10-06 21:10:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:10:15,021 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:10:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:15,023 INFO L225 Difference]: With dead ends: 777 [2021-10-06 21:10:15,023 INFO L226 Difference]: Without dead ends: 762 [2021-10-06 21:10:15,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 6405.9ms TimeCoverageRelationStatistics Valid=396, Invalid=1326, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:10:15,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-10-06 21:10:15,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 534. [2021-10-06 21:10:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 3.6979362101313322) internal successors, (1971), 533 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1971 transitions. [2021-10-06 21:10:15,042 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1971 transitions. Word has length 17 [2021-10-06 21:10:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:15,043 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1971 transitions. [2021-10-06 21:10:15,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:10:15,043 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1971 transitions. [2021-10-06 21:10:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:10:15,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:15,044 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:15,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:15,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:15,245 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:15,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:15,246 INFO L82 PathProgramCache]: Analyzing trace with hash 486324263, now seen corresponding path program 83 times [2021-10-06 21:10:15,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:15,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81158865] [2021-10-06 21:10:15,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:10:15,247 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:15,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:15,248 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:15,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-10-06 21:10:17,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:10:17,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:17,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:10:17,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:17,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:19,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:19,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81158865] [2021-10-06 21:10:19,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81158865] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:10:19,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:10:19,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:10:19,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657081851] [2021-10-06 21:10:19,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:10:19,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:10:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:10:19,030 INFO L87 Difference]: Start difference. First operand 534 states and 1971 transitions. Second operand has 20 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) [2021-10-06 21:10:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:10:24,612 INFO L93 Difference]: Finished difference Result 712 states and 2283 transitions. [2021-10-06 21:10:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:10:24,614 INFO L78 Accepts]: Start accepts. Automaton has has 20 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 17 [2021-10-06 21:10:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:10:24,616 INFO L225 Difference]: With dead ends: 712 [2021-10-06 21:10:24,616 INFO L226 Difference]: Without dead ends: 702 [2021-10-06 21:10:24,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 5366.4ms TimeCoverageRelationStatistics Valid=310, Invalid=1412, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:10:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-10-06 21:10:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 534. [2021-10-06 21:10:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 533 states have (on average 3.6979362101313322) internal successors, (1971), 533 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:10:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 1971 transitions. [2021-10-06 21:10:24,631 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 1971 transitions. Word has length 17 [2021-10-06 21:10:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:10:24,631 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 1971 transitions. [2021-10-06 21:10:24,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 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) [2021-10-06 21:10:24,631 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 1971 transitions. [2021-10-06 21:10:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:10:24,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:10:24,633 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:10:24,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:24,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:24,835 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:10:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:10:24,836 INFO L82 PathProgramCache]: Analyzing trace with hash 895530023, now seen corresponding path program 84 times [2021-10-06 21:10:24,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:10:24,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553728886] [2021-10-06 21:10:24,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:10:24,837 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:10:24,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:10:24,838 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:10:24,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-10-06 21:10:26,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:10:26,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:10:26,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:10:26,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:10:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:27,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:10:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:10:28,599 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:10:28,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553728886] [2021-10-06 21:10:28,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553728886] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:10:28,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:10:28,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:10:28,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358690270] [2021-10-06 21:10:28,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:10:28,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:10:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:10:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:10:28,601 INFO L87 Difference]: Start difference. First operand 534 states and 1971 transitions. Second operand has 20 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) Received shutdown request... [2021-10-06 21:10:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:10:31,281 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:10:31,281 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:31,284 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 [2021-10-06 21:10:31,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2021-10-06 21:10:31,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:10:31,490 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. [2021-10-06 21:10:31,492 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:10:31,493 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:10:31,493 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:10:31,493 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:10:31,493 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:10:31,494 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:10:31,494 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:10:31,494 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:10:31,494 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:10:31,494 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:10:31,494 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:10:31,499 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:10:31,499 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:10:31,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:10:31 BasicIcfg [2021-10-06 21:10:31,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:10:31,501 INFO L168 Benchmark]: Toolchain (without parser) took 814448.91 ms. Allocated memory was 172.0 MB in the beginning and 217.1 MB in the end (delta: 45.1 MB). Free memory was 146.1 MB in the beginning and 106.1 MB in the end (delta: 40.0 MB). Peak memory consumption was 85.8 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:31,502 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 172.0 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:10:31,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.83 ms. Allocated memory is still 172.0 MB. Free memory was 145.8 MB in the beginning and 135.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:31,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.29 ms. Allocated memory is still 172.0 MB. Free memory was 135.2 MB in the beginning and 133.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:31,503 INFO L168 Benchmark]: Boogie Preprocessor took 32.96 ms. Allocated memory is still 172.0 MB. Free memory was 133.7 MB in the beginning and 132.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:31,503 INFO L168 Benchmark]: RCFGBuilder took 595.05 ms. Allocated memory is still 172.0 MB. Free memory was 132.4 MB in the beginning and 120.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:31,504 INFO L168 Benchmark]: TraceAbstraction took 813442.09 ms. Allocated memory was 172.0 MB in the beginning and 217.1 MB in the end (delta: 45.1 MB). Free memory was 119.9 MB in the beginning and 106.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. [2021-10-06 21:10:31,507 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 172.0 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.83 ms. Allocated memory is still 172.0 MB. Free memory was 145.8 MB in the beginning and 135.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.29 ms. Allocated memory is still 172.0 MB. Free memory was 135.2 MB in the beginning and 133.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.96 ms. Allocated memory is still 172.0 MB. Free memory was 133.7 MB in the beginning and 132.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 595.05 ms. Allocated memory is still 172.0 MB. Free memory was 132.4 MB in the beginning and 120.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 813442.09 ms. Allocated memory was 172.0 MB in the beginning and 217.1 MB in the end (delta: 45.1 MB). Free memory was 119.9 MB in the beginning and 106.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8030.6ms, 88 PlacesBefore, 32 PlacesAfterwards, 87 TransitionsBefore, 27 TransitionsAfterwards, 576 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 87 TotalNumberOfCompositions, 614 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 614, positive: 614, positive conditional: 0, positive unconditional: 614, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 333, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 333, positive: 333, positive conditional: 0, positive unconditional: 333, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 614, positive: 281, positive conditional: 0, positive unconditional: 281, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 333, unknown conditional: 0, unknown unconditional: 333] , 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: 68]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 63]: 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 (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - TimeoutResultAtElement [Line: 62]: 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 (534states) and FLOYD_HOARE automaton (currently 25 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 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: 813273.5ms, OverallIterations: 100, TraceHistogramMax: 4, EmptinessCheckTime: 111.1ms, AutomataDifference: 551288.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8106.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4469 SDtfs, 16061 SDslu, 31231 SDs, 0 SdLazy, 33754 SolverSat, 4300 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81976.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5410 GetRequests, 1396 SyntacticMatches, 0 SemanticMatches, 4013 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42226 ImplicationChecksByTransitivity, 531439.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=538occurred in iteration=97, InterpolantAutomatonStates: 3568, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 944.7ms AutomataMinimizationTime, 99 MinimizatonAttempts, 17914 StatesRemovedByMinimization, 93 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 562.4ms SsaConstructionTime, 11784.5ms SatisfiabilityAnalysisTime, 141857.3ms InterpolantComputationTime, 1569 NumberOfCodeBlocks, 1569 NumberOfCodeBlocksAsserted, 200 NumberOfCheckSat, 2938 ConstructedInterpolants, 331 QuantifiedInterpolants, 50550 SizeOfPredicates, 565 NumberOfNonLiveVariables, 6903 ConjunctsInSsa, 1999 ConjunctsInUnsatCore, 200 InterpolantComputations, 12 PerfectInterpolantSequences, 5/1012 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